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Commit 6e8d49b8 authored by Sergei Golubchik's avatar Sergei Golubchik
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MDEV-6065 MySQL Bug#13623473 "MISSING ROWS ON SELECT AND JOIN WITH TIME/DATETIME COMPARE" 

fix for ref like "indexed_time = datetime"
parent 2510f9c6
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Showing with 2553 additions and 5 deletions
mysql-test/r/type_time_6065.result 0 → 100644
View file @ 6e8d49b8
SET TIMESTAMP=UNIX_TIMESTAMP('2012-01-31 10:14:35');
CREATE TABLE t1 (col_time_key TIME, KEY(col_time_key));
INSERT INTO t1 VALUES ('00:00:00'),('-24:00:00'),('-48:00:00'),('24:00:00'),('48:00:00');
CREATE TABLE t2 (col_datetime_key DATETIME, KEY(col_datetime_key));
INSERT INTO t2 SELECT * FROM t1;
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where
1 SIMPLE t2 ref col_datetime_key col_datetime_key 9 test.t1.col_time_key 1 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where
1 SIMPLE t2 ref col_datetime_key col_datetime_key 9 test.t1.col_time_key 1 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using where; Using index
1 SIMPLE t2 ref col_datetime_key col_datetime_key 9 test.t1.col_time_key 1 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key = col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using where; Using index
1 SIMPLE t2 ref col_datetime_key col_datetime_key 9 test.t1.col_time_key 1 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key = col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where
1 SIMPLE t1 ref col_time_key col_time_key 4 test.t2.col_datetime_key 2 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where
1 SIMPLE t1 ref col_time_key col_time_key 4 test.t2.col_datetime_key 2 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using where; Using index
1 SIMPLE t1 ref col_time_key col_time_key 4 test.t2.col_datetime_key 2 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` = `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key = col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using where; Using index
1 SIMPLE t1 ref col_time_key col_time_key 4 test.t2.col_datetime_key 2 100.00 Using where; Using index
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` = `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key = col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key >= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key >= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` >= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key >= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` >= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key >= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key > col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key > col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` > `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key > col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` > `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key > col_time_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key <= col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-30 00:00:00
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-29 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-01-31 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-01 00:00:00
24:00:00 2012-02-02 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key <= col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
-24:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
00:00:00 2012-01-31 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
24:00:00 2012-02-01 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
48:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` <= `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key <= col_datetime_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-01-31 00:00:00 00:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-01 00:00:00 24:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` <= `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key <= col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 -48:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 -24:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 00:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 24:00:00
2012-02-01 00:00:00 48:00:00
2012-02-02 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` IGNORE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 ignore INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` IGNORE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 ignore INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_time_key < col_datetime_key;
col_time_key col_datetime_key
-24:00:00 2012-01-31 00:00:00
-24:00:00 2012-02-01 00:00:00
-24:00:00 2012-02-02 00:00:00
-48:00:00 2012-01-30 00:00:00
-48:00:00 2012-01-31 00:00:00
-48:00:00 2012-02-01 00:00:00
-48:00:00 2012-02-02 00:00:00
00:00:00 2012-02-01 00:00:00
00:00:00 2012-02-02 00:00:00
24:00:00 2012-02-02 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 index col_time_key col_time_key 4 NULL 5 100.00 Using index
1 SIMPLE t2 ALL col_datetime_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t1`.`col_time_key` AS `col_time_key`,`test`.`t2`.`col_datetime_key` AS `col_datetime_key` from `test`.`t1` FORCE INDEX (`col_time_key`) straight_join `test`.`t2` FORCE INDEX (`col_datetime_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t1 force INDEX (col_time_key)
STRAIGHT_JOIN
t2 force INDEX (col_datetime_key)
WHERE col_datetime_key < col_time_key;
col_time_key col_datetime_key
-24:00:00 2012-01-29 00:00:00
00:00:00 2012-01-29 00:00:00
00:00:00 2012-01-30 00:00:00
24:00:00 2012-01-29 00:00:00
24:00:00 2012-01-30 00:00:00
24:00:00 2012-01-31 00:00:00
48:00:00 2012-01-29 00:00:00
48:00:00 2012-01-30 00:00:00
48:00:00 2012-01-31 00:00:00
48:00:00 2012-02-01 00:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 ALL NULL NULL NULL NULL 5 100.00
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` IGNORE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 ignore INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` IGNORE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 ignore INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t1`.`col_time_key` < `test`.`t2`.`col_datetime_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_time_key < col_datetime_key;
col_datetime_key col_time_key
2012-01-30 00:00:00 -48:00:00
2012-01-31 00:00:00 -24:00:00
2012-01-31 00:00:00 -48:00:00
2012-02-01 00:00:00 -24:00:00
2012-02-01 00:00:00 -48:00:00
2012-02-01 00:00:00 00:00:00
2012-02-02 00:00:00 -24:00:00
2012-02-02 00:00:00 -48:00:00
2012-02-02 00:00:00 00:00:00
2012-02-02 00:00:00 24:00:00
EXPLAIN EXTENDED SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 index col_datetime_key col_datetime_key 9 NULL 5 100.00 Using index
1 SIMPLE t1 ALL col_time_key NULL NULL NULL 5 100.00 Range checked for each record (index map: 0x1)
Warnings:
Note 1003 select `test`.`t2`.`col_datetime_key` AS `col_datetime_key`,`test`.`t1`.`col_time_key` AS `col_time_key` from `test`.`t2` FORCE INDEX (`col_datetime_key`) straight_join `test`.`t1` FORCE INDEX (`col_time_key`) where (`test`.`t2`.`col_datetime_key` < `test`.`t1`.`col_time_key`)
SELECT * FROM
t2 force INDEX (col_datetime_key)
STRAIGHT_JOIN
t1 force INDEX (col_time_key)
WHERE col_datetime_key < col_time_key;
col_datetime_key col_time_key
2012-01-29 00:00:00 -24:00:00
2012-01-29 00:00:00 00:00:00
2012-01-29 00:00:00 24:00:00
2012-01-29 00:00:00 48:00:00
2012-01-30 00:00:00 00:00:00
2012-01-30 00:00:00 24:00:00
2012-01-30 00:00:00 48:00:00
2012-01-31 00:00:00 24:00:00
2012-01-31 00:00:00 48:00:00
2012-02-01 00:00:00 48:00:00
DROP TABLE t1,t2;
CREATE TABLE t1 (
pk INT NOT NULL AUTO_INCREMENT,
col_int_nokey INT,
col_int_key INT NOT NULL,
PRIMARY KEY (pk),
KEY col_int_key (col_int_key)
);
INSERT INTO t1 VALUES (10,1,7), (11,7,0), (12,4,9), (13,7,3),
(14,0,4), (15,2,2), (16,9,5), (17,4,3), (18,0,1), (19,9,3), (20,1,6),
(21,3,7), (22,8,5), (23,8,1), (24,18,204), (25,84,224), (26,6,9),
(27,3,5), (28,6,0), (29,6,3);
CREATE TABLE t2 (
col_int_nokey INT NOT NULL,
col_datetime_key DATETIME NOT NULL,
col_varchar_key VARCHAR(1) NOT NULL,
KEY col_datetime_key (col_datetime_key),
KEY col_varchar_key (col_varchar_key)
);
INSERT INTO t2 VALUES (1,'2001-11-04 19:07:55','k');
CREATE TABLE t3 (
col_time_key TIME,
KEY col_time_key (col_time_key)
);
INSERT INTO t3 VALUES ('21:22:34'), ('10:50:38'), ('00:21:38'),
('04:08:02'), ('16:25:11'), ('10:14:58'), ('19:47:59'), ('11:14:24'),
('00:00:00'), ('00:00:00'), ('15:57:25'), ('07:05:51'), ('19:22:21'),
('03:53:16'), ('09:16:38'), ('15:37:26'), ('00:00:00'), ('05:03:03'),
('02:59:24'), ('00:01:58');
EXPLAIN EXTENDED SELECT * FROM t2 STRAIGHT_JOIN t3 FORCE INDEX (col_time_key)
ON t3.col_time_key > t2.col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 system col_datetime_key NULL NULL NULL 1 100.00
1 SIMPLE t3 index col_time_key col_time_key 4 NULL 20 100.00 Using where; Using index
Warnings:
Note 1003 select 1 AS `col_int_nokey`,'2001-11-04 19:07:55' AS `col_datetime_key`,'k' AS `col_varchar_key`,`test`.`t3`.`col_time_key` AS `col_time_key` from `test`.`t3` FORCE INDEX (`col_time_key`) where (`test`.`t3`.`col_time_key` > '2001-11-04 19:07:55')
SELECT * FROM t2 STRAIGHT_JOIN t3 FORCE INDEX (col_time_key)
ON t3.col_time_key > t2.col_datetime_key;
col_int_nokey col_datetime_key col_varchar_key col_time_key
1 2001-11-04 19:07:55 k 00:00:00
1 2001-11-04 19:07:55 k 00:00:00
1 2001-11-04 19:07:55 k 00:00:00
1 2001-11-04 19:07:55 k 00:01:58
1 2001-11-04 19:07:55 k 00:21:38
1 2001-11-04 19:07:55 k 02:59:24
1 2001-11-04 19:07:55 k 03:53:16
1 2001-11-04 19:07:55 k 04:08:02
1 2001-11-04 19:07:55 k 05:03:03
1 2001-11-04 19:07:55 k 07:05:51
1 2001-11-04 19:07:55 k 09:16:38
1 2001-11-04 19:07:55 k 10:14:58
1 2001-11-04 19:07:55 k 10:50:38
1 2001-11-04 19:07:55 k 11:14:24
1 2001-11-04 19:07:55 k 15:37:26
1 2001-11-04 19:07:55 k 15:57:25
1 2001-11-04 19:07:55 k 16:25:11
1 2001-11-04 19:07:55 k 19:22:21
1 2001-11-04 19:07:55 k 19:47:59
1 2001-11-04 19:07:55 k 21:22:34
EXPLAIN EXTENDED SELECT * FROM t2 STRAIGHT_JOIN t3 IGNORE INDEX (col_time_key)
ON t3.col_time_key > t2.col_datetime_key;
id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t2 system col_datetime_key NULL NULL NULL 1 100.00
1 SIMPLE t3 ALL NULL NULL NULL NULL 20 100.00 Using where
Warnings:
Note 1003 select 1 AS `col_int_nokey`,'2001-11-04 19:07:55' AS `col_datetime_key`,'k' AS `col_varchar_key`,`test`.`t3`.`col_time_key` AS `col_time_key` from `test`.`t3` IGNORE INDEX (`col_time_key`) where (`test`.`t3`.`col_time_key` > '2001-11-04 19:07:55')
SELECT * FROM t2 STRAIGHT_JOIN t3 IGNORE INDEX (col_time_key)
ON t3.col_time_key > t2.col_datetime_key;
col_int_nokey col_datetime_key col_varchar_key col_time_key
1 2001-11-04 19:07:55 k 00:00:00
1 2001-11-04 19:07:55 k 00:00:00
1 2001-11-04 19:07:55 k 00:00:00
1 2001-11-04 19:07:55 k 00:01:58
1 2001-11-04 19:07:55 k 00:21:38
1 2001-11-04 19:07:55 k 02:59:24
1 2001-11-04 19:07:55 k 03:53:16
1 2001-11-04 19:07:55 k 04:08:02
1 2001-11-04 19:07:55 k 05:03:03
1 2001-11-04 19:07:55 k 07:05:51
1 2001-11-04 19:07:55 k 09:16:38
1 2001-11-04 19:07:55 k 10:14:58
1 2001-11-04 19:07:55 k 10:50:38
1 2001-11-04 19:07:55 k 11:14:24
1 2001-11-04 19:07:55 k 15:37:26
1 2001-11-04 19:07:55 k 15:57:25
1 2001-11-04 19:07:55 k 16:25:11
1 2001-11-04 19:07:55 k 19:22:21
1 2001-11-04 19:07:55 k 19:47:59
1 2001-11-04 19:07:55 k 21:22:34
EXPLAIN EXTENDED SELECT outr.col_int_nokey
FROM t2 as outr
STRAIGHT_JOIN t3 AS outr2
ON outr2.col_time_key > outr.col_datetime_key
WHERE outr.col_int_nokey IN (
SELECT col_int_key
FROM t1 AS innr
WHERE innr.pk >= innr.col_int_nokey
) AND (
outr.col_int_nokey <= 6
OR
outr.col_varchar_key IS NULL
);
id select_type table type possible_keys key key_len ref rows filtered Extra
1 PRIMARY outr system col_datetime_key NULL NULL NULL 1 100.00
1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 100.00
1 PRIMARY outr2 index col_time_key col_time_key 4 NULL 20 100.00 Using where; Using index; Using join buffer (flat, BNL join)
2 MATERIALIZED innr ref col_int_key col_int_key 4 const 2 100.00 Using where
Warnings:
Note 1003 select 1 AS `col_int_nokey` from `test`.`t3` `outr2` semi join (`test`.`t1` `innr`) where ((`test`.`innr`.`col_int_key` = 1) and (`test`.`innr`.`pk` >= `test`.`innr`.`col_int_nokey`) and (`test`.`outr2`.`col_time_key` > '2001-11-04 19:07:55'))
SELECT outr.col_int_nokey
FROM t2 as outr
STRAIGHT_JOIN t3 AS outr2
ON outr2.col_time_key > outr.col_datetime_key
WHERE outr.col_int_nokey IN (
SELECT col_int_key
FROM t1 AS innr
WHERE innr.pk >= innr.col_int_nokey
) AND (
outr.col_int_nokey <= 6
OR
outr.col_varchar_key IS NULL
);
col_int_nokey
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
DROP TABLE t1,t2,t3;
SET TIMESTAMP=0;
mysql-test/t/type_time_6065.test 0 → 100644
View file @ 6e8d49b8
#
# MDEV-6065 MySQL Bug#13623473 "MISSING ROWS ON SELECT AND JOIN WITH TIME/DATETIME COMPARE"
#
# Systematic testing of ref access and range scan
SET TIMESTAMP=UNIX_TIMESTAMP('2012-01-31 10:14:35');
CREATE TABLE t1 (col_time_key TIME, KEY(col_time_key));
INSERT INTO t1 VALUES ('00:00:00'),('-24:00:00'),('-48:00:00'),('24:00:00'),('48:00:00');
CREATE TABLE t2 (col_datetime_key DATETIME, KEY(col_datetime_key));
INSERT INTO t2 SELECT * FROM t1;
let $cnt_0=5;
let $operator= =;
# For operator in =, >=, >, <=, <
while ($cnt_0)
{
let $cnt_1=2;
let $first_table=t1;
# for table in t1,t2
while ($cnt_1)
{
if ($first_table==t1)
{
let $first_index=col_time_key;
let $second_table=t2;
let $second_index=col_datetime_key;
}
if ($first_table==t2)
{
let $first_index=col_datetime_key;
let $second_table=t1;
let $second_index=col_time_key;
}
let $cnt_2=2;
let $first_index_hint=ignore;
# for first_index_hint in ignore,force
while ($cnt_2)
{
let $cnt_3=2;
let $second_index_hint=ignore;
# for second_index_hint in ignore, force
while ($cnt_3)
{
let $cnt_4=2;
let $first_operand=col_time_key;
# for first_operand in col_time_key, col_datetime_key
while ($cnt_4)
{
if ($first_operand==col_time_key)
{
let $second_operand=col_datetime_key;
}
if ($first_operand==col_datetime_key)
{
let $second_operand=col_time_key;
}
eval EXPLAIN EXTENDED SELECT * FROM
$first_table $first_index_hint INDEX ($first_index)
STRAIGHT_JOIN
$second_table $second_index_hint INDEX ($second_index)
WHERE $first_operand $operator $second_operand;
--sorted_result
eval SELECT * FROM
$first_table $first_index_hint INDEX ($first_index)
STRAIGHT_JOIN
$second_table $second_index_hint INDEX ($second_index)
WHERE $first_operand $operator $second_operand;
let $first_operand=col_datetime_key;
dec $cnt_4;
}
let $second_index_hint=force;
dec $cnt_3;
}
let $first_index_hint=force;
dec $cnt_2;
}
let $first_table=t2;
dec $cnt_1;
}
if ($cnt_0==5)
{
let $operator= >=;
}
if ($cnt_0==4)
{
let $operator= >;
}
if ($cnt_0==3)
{
let $operator= <=;
}
if ($cnt_0==2)
{
let $operator= <;
}
dec $cnt_0;
}
DROP TABLE t1,t2;
#
# Original test of the bug report
#
CREATE TABLE t1 (
pk INT NOT NULL AUTO_INCREMENT,
col_int_nokey INT,
col_int_key INT NOT NULL,
PRIMARY KEY (pk),
KEY col_int_key (col_int_key)
);
INSERT INTO t1 VALUES (10,1,7), (11,7,0), (12,4,9), (13,7,3),
(14,0,4), (15,2,2), (16,9,5), (17,4,3), (18,0,1), (19,9,3), (20,1,6),
(21,3,7), (22,8,5), (23,8,1), (24,18,204), (25,84,224), (26,6,9),
(27,3,5), (28,6,0), (29,6,3);
CREATE TABLE t2 (
col_int_nokey INT NOT NULL,
col_datetime_key DATETIME NOT NULL,
col_varchar_key VARCHAR(1) NOT NULL,
KEY col_datetime_key (col_datetime_key),
KEY col_varchar_key (col_varchar_key)
);
INSERT INTO t2 VALUES (1,'2001-11-04 19:07:55','k');
CREATE TABLE t3 (
col_time_key TIME,
KEY col_time_key (col_time_key)
);
INSERT INTO t3 VALUES ('21:22:34'), ('10:50:38'), ('00:21:38'),
('04:08:02'), ('16:25:11'), ('10:14:58'), ('19:47:59'), ('11:14:24'),
('00:00:00'), ('00:00:00'), ('15:57:25'), ('07:05:51'), ('19:22:21'),
('03:53:16'), ('09:16:38'), ('15:37:26'), ('00:00:00'), ('05:03:03'),
('02:59:24'), ('00:01:58');
let $query=SELECT * FROM t2 STRAIGHT_JOIN t3 FORCE INDEX (col_time_key)
ON t3.col_time_key > t2.col_datetime_key;
eval EXPLAIN EXTENDED $query;
--sorted_result
eval $query;
let $query=SELECT * FROM t2 STRAIGHT_JOIN t3 IGNORE INDEX (col_time_key)
ON t3.col_time_key > t2.col_datetime_key;
eval EXPLAIN EXTENDED $query;
--sorted_result
eval $query;
let $query=SELECT outr.col_int_nokey
FROM t2 as outr
STRAIGHT_JOIN t3 AS outr2
ON outr2.col_time_key > outr.col_datetime_key
WHERE outr.col_int_nokey IN (
SELECT col_int_key
FROM t1 AS innr
WHERE innr.pk >= innr.col_int_nokey
) AND (
outr.col_int_nokey <= 6
OR
outr.col_varchar_key IS NULL
);
eval EXPLAIN EXTENDED $query;
--sorted_result
eval $query;
DROP TABLE t1,t2,t3;
SET TIMESTAMP=0; # back to current time
#
# End of 10.0 tests
#
sql/field.cc
View file @ 6e8d49b8
......@@ -5316,12 +5316,41 @@ int Field_time::store(const char *from,uint len,CHARSET_INFO *cs)
}
/**
subtract a given number of days from DATETIME, return TIME
optimized version of calc_time_diff()
@note it might generate TIME values outside of the valid TIME range!
*/
static void calc_datetime_days_diff(MYSQL_TIME *ltime, long days)
{
long daydiff= calc_daynr(ltime->year, ltime->month, ltime->day) - days;
ltime->year= ltime->month= 0;
if (daydiff >=0 )
ltime->day= daydiff;
else
{
longlong timediff= ((((daydiff * 24LL +
ltime->hour) * 60LL +
ltime->minute) * 60LL +
ltime->second) * 1000000LL +
ltime->second_part);
unpack_time(timediff, ltime);
}
ltime->time_type= MYSQL_TIMESTAMP_TIME;
}
int Field_time::store_time_dec(MYSQL_TIME *ltime, uint dec)
{
MYSQL_TIME l_time= *ltime;
ErrConvTime str(ltime);
int was_cut= 0;
if (curdays && l_time.time_type != MYSQL_TIMESTAMP_TIME)
calc_datetime_days_diff(&l_time, curdays);
int have_smth_to_conv= !check_time_range(&l_time, decimals(), &was_cut);
return store_TIME_with_warning(&l_time, &str, was_cut, have_smth_to_conv);
}
......@@ -5356,8 +5385,30 @@ int Field_time::store(longlong nr, bool unsigned_val)
return store_TIME_with_warning(&ltime, &str, was_cut, have_smth_to_conv);
}
void Field_time::set_curdays(THD *thd)
{
MYSQL_TIME ltime;
set_current_date(thd, &ltime);
curdays= calc_daynr(ltime.year, ltime.month, ltime.day);
}
Field *Field_time::new_key_field(MEM_ROOT *root, TABLE *new_table,
uchar *new_ptr, uint32 length,
uchar *new_null_ptr, uint new_null_bit)
{
THD *thd= get_thd();
Field_time *res=
(Field_time*) Field::new_key_field(root, new_table, new_ptr, length,
new_null_ptr, new_null_bit);
if (!(thd->variables.old_behavior & OLD_MODE_ZERO_DATE_TIME_CAST) && res)
res->set_curdays(thd);
return res;
}
double Field_time::val_real(void)
{
ASSERT_COLUMN_MARKED_FOR_READ;
......
sql/field.h
View file @ 6e8d49b8
......@@ -1852,6 +1852,12 @@ class Field_newdate :public Field_temporal_with_date {
class Field_time :public Field_temporal {
/*
when this Field_time instance is used for storing values for index lookups
(see class store_key, Field::new_key_field(), etc), the following
might be set to TO_DAYS(CURDATE()). See also Field_time::store_time_dec()
*/
long curdays;
protected:
virtual void store_TIME(MYSQL_TIME *ltime);
int store_TIME_with_warning(MYSQL_TIME *ltime, const ErrConv *str,
......@@ -1861,7 +1867,7 @@ class Field_time :public Field_temporal {
uchar null_bit_arg, enum utype unireg_check_arg,
const char *field_name_arg)
:Field_temporal(ptr_arg, length_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg)
unireg_check_arg, field_name_arg), curdays(0)
{}
enum_field_types type() const { return MYSQL_TYPE_TIME;}
enum ha_base_keytype key_type() const { return HA_KEYTYPE_INT24; }
......@@ -1880,6 +1886,10 @@ class Field_time :public Field_temporal {
uint32 pack_length() const { return 3; }
void sql_type(String &str) const;
uint size_of() const { return sizeof(*this); }
void set_curdays(THD *thd);
Field *new_key_field(MEM_ROOT *root, TABLE *new_table,
uchar *new_ptr, uint32 length,
uchar *new_null_ptr, uint new_null_bit);
};
......
sql/sql_time.cc
View file @ 6e8d49b8
......@@ -1259,8 +1259,7 @@ mix_date_and_time(MYSQL_TIME *to, const MYSQL_TIME *from)
/**
Get current date in DATE format
*/
static void
set_current_date(THD *thd, MYSQL_TIME *to)
void set_current_date(THD *thd, MYSQL_TIME *to)
{
thd->variables.time_zone->gmt_sec_to_TIME(to, thd->query_start());
thd->time_zone_used= 1;
......
sql/sql_time.h
View file @ 6e8d49b8
......@@ -33,6 +33,7 @@ typedef struct st_known_date_time_format KNOWN_DATE_TIME_FORMAT;
ulong convert_period_to_month(ulong period);
ulong convert_month_to_period(ulong month);
void set_current_date(THD *thd, MYSQL_TIME *to);
bool time_to_datetime(MYSQL_TIME *ltime);
void time_to_daytime_interval(MYSQL_TIME *l_time);
bool get_date_from_daynr(long daynr,uint *year, uint *month, uint *day);
......
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