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Commit b822ebf6 authored by Mattias Jonsson's avatar Mattias Jonsson
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Bug#17909699: WRONG RESULTS WITH PARTITION BY LIST COLUMNS() 

Typo leading to not including the last list values (partition).

Also improved pruning to skip last partition if not used.

rb#4762 approved by Aditya and Marko.
parent aced5994
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Showing with 184 additions and 17 deletions
mysql-test/r/partition_pruning.result
View file @ b822ebf6
......@@ -3294,3 +3294,117 @@ explain partitions select * from t1 where a between 10 and 10+33;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p0,p1,p2 ALL NULL NULL NULL NULL 100 Using where
drop table t0, t1;
#
# Bug#71095: Wrong results with PARTITION BY LIST COLUMNS()
#
CREATE TABLE t1
(c1 int,
c2 int,
c3 int,
c4 int,
PRIMARY KEY (c1,c2))
PARTITION BY LIST COLUMNS (c2)
(PARTITION p1 VALUES IN (1,2),
PARTITION p2 VALUES IN (3,4));
INSERT INTO t1 VALUES (1, 1, 1, 1), (2, 3, 1, 1);
INSERT INTO t1 VALUES (1, 2, 1, 1), (2, 4, 1, 1);
SELECT * FROM t1 WHERE c1 = 1 AND c2 < 1;
c1 c2 c3 c4
SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 1;
c1 c2 c3 c4
1 1 1 1
SELECT * FROM t1 WHERE c1 = 1 AND c2 = 1;
c1 c2 c3 c4
1 1 1 1
SELECT * FROM t1 WHERE c1 = 1 AND c2 >= 1;
c1 c2 c3 c4
1 1 1 1
1 2 1 1
SELECT * FROM t1 WHERE c1 = 1 AND c2 > 1;
c1 c2 c3 c4
1 2 1 1
SELECT * FROM t1 WHERE c1 = 1 AND c2 < 3;
c1 c2 c3 c4
1 1 1 1
1 2 1 1
SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 3;
c1 c2 c3 c4
1 1 1 1
1 2 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 3;
c1 c2 c3 c4
2 3 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 = 3;
c1 c2 c3 c4
2 3 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 3;
c1 c2 c3 c4
2 3 1 1
2 4 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 > 3;
c1 c2 c3 c4
2 4 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 < 4;
c1 c2 c3 c4
2 3 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 4;
c1 c2 c3 c4
2 3 1 1
2 4 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 = 4;
c1 c2 c3 c4
2 4 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 4;
c1 c2 c3 c4
2 4 1 1
SELECT * FROM t1 WHERE c1 = 2 AND c2 > 4;
c1 c2 c3 c4
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 < 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1 range PRIMARY PRIMARY 8 NULL 1 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 = 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1 const PRIMARY PRIMARY 8 const,const 1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 >= 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 > 1;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 < 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1 range PRIMARY PRIMARY 8 NULL 1 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 = 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 const PRIMARY PRIMARY 8 const,const 1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 range PRIMARY PRIMARY 8 NULL 1 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 > 3;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 range PRIMARY PRIMARY 8 NULL 1 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 < 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p1,p2 range PRIMARY PRIMARY 8 NULL 2 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 = 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 const PRIMARY PRIMARY 8 const,const 1
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t1 p2 range PRIMARY PRIMARY 8 NULL 1 Using where
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 > 4;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
DROP TABLE t1;
mysql-test/t/partition_pruning.test
View file @ b822ebf6
......@@ -1410,3 +1410,51 @@ explain partitions select * from t1 where a between 10 and 13;
explain partitions select * from t1 where a between 10 and 10+33;
drop table t0, t1;
--echo #
--echo # Bug#71095: Wrong results with PARTITION BY LIST COLUMNS()
--echo #
CREATE TABLE t1
(c1 int,
c2 int,
c3 int,
c4 int,
PRIMARY KEY (c1,c2))
PARTITION BY LIST COLUMNS (c2)
(PARTITION p1 VALUES IN (1,2),
PARTITION p2 VALUES IN (3,4));
INSERT INTO t1 VALUES (1, 1, 1, 1), (2, 3, 1, 1);
INSERT INTO t1 VALUES (1, 2, 1, 1), (2, 4, 1, 1);
SELECT * FROM t1 WHERE c1 = 1 AND c2 < 1;
SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 1;
SELECT * FROM t1 WHERE c1 = 1 AND c2 = 1;
SELECT * FROM t1 WHERE c1 = 1 AND c2 >= 1;
SELECT * FROM t1 WHERE c1 = 1 AND c2 > 1;
SELECT * FROM t1 WHERE c1 = 1 AND c2 < 3;
SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 3;
SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 3;
SELECT * FROM t1 WHERE c1 = 2 AND c2 = 3;
SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 3;
SELECT * FROM t1 WHERE c1 = 2 AND c2 > 3;
SELECT * FROM t1 WHERE c1 = 2 AND c2 < 4;
SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 4;
SELECT * FROM t1 WHERE c1 = 2 AND c2 = 4;
SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 4;
SELECT * FROM t1 WHERE c1 = 2 AND c2 > 4;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 < 1;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 1;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 = 1;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 >= 1;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 > 1;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 < 3;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 1 AND c2 <= 3;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 3;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 = 3;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 3;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 > 3;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 < 4;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 <= 4;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 = 4;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 >= 4;
EXPLAIN PARTITIONS SELECT * FROM t1 WHERE c1 = 2 AND c2 > 4;
DROP TABLE t1;
sql/sql_partition.cc
View file @ b822ebf6
......@@ -3304,19 +3304,28 @@ uint32 get_partition_id_cols_list_for_endpoint(partition_info *part_info,
uint num_columns= part_info->part_field_list.elements;
uint list_index;
uint min_list_index= 0;
int cmp;
/* Notice that max_list_index = last_index + 1 here! */
uint max_list_index= part_info->num_list_values;
DBUG_ENTER("get_partition_id_cols_list_for_endpoint");
/* Find the matching partition (including taking endpoint into account). */
do
{
/* Midpoint, adjusted down, so it can never be > last index. */
/* Midpoint, adjusted down, so it can never be >= max_list_index. */
list_index= (max_list_index + min_list_index) >> 1;
if (cmp_rec_and_tuple_prune(list_col_array + list_index*num_columns,
nparts, left_endpoint, include_endpoint) > 0)
cmp= cmp_rec_and_tuple_prune(list_col_array + list_index*num_columns,
nparts, left_endpoint, include_endpoint);
if (cmp > 0)
{
min_list_index= list_index + 1;
}
else
{
max_list_index= list_index;
if (cmp == 0)
break;
}
} while (max_list_index > min_list_index);
list_index= max_list_index;
......@@ -3333,12 +3342,10 @@ uint32 get_partition_id_cols_list_for_endpoint(partition_info *part_info,
nparts, left_endpoint,
include_endpoint)));
if (!left_endpoint)
{
/* Set the end after this list tuple if not already after the last. */
if (list_index < part_info->num_parts)
/* Include the right endpoint if not already passed end of array. */
if (!left_endpoint && include_endpoint && cmp == 0 &&
list_index < part_info->num_list_values)
list_index++;
}
DBUG_RETURN(list_index);
}
......@@ -7493,15 +7500,13 @@ static int cmp_rec_and_tuple_prune(part_column_list_val *val,
field= val->part_info->part_field_array + n_vals_in_rec;
if (!(*field))
{
/*
Full match, if right endpoint and not including the endpoint,
(rec < part) return lesser.
*/
if (!is_left_endpoint && !include_endpoint)
return -4;
/* Otherwise they are equal! */
/* Full match. Only equal if including endpoint. */
if (include_endpoint)
return 0;
if (is_left_endpoint)
return +4; /* Start of range, part_tuple < rec, return higher. */
return -4; /* End of range, rec < part_tupe, return lesser. */
}
/*
The prefix is equal and there are more partition columns to compare.
......
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