Note 1003 /* select#1 */ select `test`.`t1`.`class` AS `class`,`test`.`t1`.`id` AS `id`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (`test`.`t1`.`title` = 'a10')
SELECT * FROM t1 WHERE title = 'a10';
class id title
10 10 a10
SELECT * FROM t1 WHERE title = 'a5000';
class id title
5000 5000 a5000
SELECT * FROM t1 WHERE title = 'a10000';
class id title
10000 10000 a10000
SELECT * FROM t1 WHERE title = 'a10010';
class id title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=REDUNDANT;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
SET SESSION debug="+d,crash_commit_before";
ALTER TABLE t1 DROP COLUMN c;
ERROR HY000: Lost connection to MySQL server during query
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
DROP PROCEDURE populate_t1;
CREATE PROCEDURE populate_t1()
BEGIN
DECLARE i int DEFAULT 1;
START TRANSACTION;
WHILE (i <= 10000) DO
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
SET i = i + 1;
END WHILE;
COMMIT;
END|
CREATE TABLE t1(
class INT,
id INT,
title VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=COMPACT;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CREATE INDEX idx_title ON t1(title);
# restart
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT * FROM t1 WHERE title = 'a10';
class id title
10 10 a10
SELECT * FROM t1 WHERE title = 'a5000';
class id title
5000 5000 a5000
SELECT * FROM t1 WHERE title = 'a10000';
class id title
10000 10000 a10000
SELECT * FROM t1 WHERE title = 'a10010';
class id title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=COMPACT;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
ALTER TABLE t1 DROP COLUMN c;
# restart
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
CREATE TABLE t1(
class INT,
id INT,
title VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=COMPACT;
SET SESSION debug="+d,crash_commit_before";
CREATE INDEX idx_title ON t1(title);
ERROR HY000: Lost connection to MySQL server during query
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
Note 1003 /* select#1 */ select `test`.`t1`.`class` AS `class`,`test`.`t1`.`id` AS `id`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (`test`.`t1`.`title` = 'a10')
SELECT * FROM t1 WHERE title = 'a10';
class id title
10 10 a10
SELECT * FROM t1 WHERE title = 'a5000';
class id title
5000 5000 a5000
SELECT * FROM t1 WHERE title = 'a10000';
class id title
10000 10000 a10000
SELECT * FROM t1 WHERE title = 'a10010';
class id title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=COMPACT;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
SET SESSION debug="+d,crash_commit_before";
ALTER TABLE t1 DROP COLUMN c;
ERROR HY000: Lost connection to MySQL server during query
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
DROP PROCEDURE populate_t1;
CREATE PROCEDURE populate_t1()
BEGIN
DECLARE i int DEFAULT 1;
START TRANSACTION;
WHILE (i <= 10000) DO
INSERT INTO t1 VALUES (i, i, CONCAT('a', i));
SET i = i + 1;
END WHILE;
COMMIT;
END|
CREATE TABLE t1(
class INT,
id INT,
title VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CREATE INDEX idx_title ON t1(title);
# restart
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT * FROM t1 WHERE title = 'a10';
class id title
10 10 a10
SELECT * FROM t1 WHERE title = 'a5000';
class id title
5000 5000 a5000
SELECT * FROM t1 WHERE title = 'a10000';
class id title
10000 10000 a10000
SELECT * FROM t1 WHERE title = 'a10010';
class id title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
ALTER TABLE t1 DROP COLUMN c;
# restart
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
DROP TABLE t1;
CREATE TABLE t1(
class INT,
id INT,
title VARCHAR(100)
) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
SET SESSION debug="+d,crash_commit_before";
CREATE INDEX idx_title ON t1(title);
ERROR HY000: Lost connection to MySQL server during query
SELECT COUNT(*) FROM t1;
COUNT(*)
10000
CHECK TABLE t1;
Table Op Msg_type Msg_text
test.t1 check status OK
EXPLAIN SELECT * FROM t1 WHERE title = 'a10';
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
Note 1003 /* select#1 */ select `test`.`t1`.`class` AS `class`,`test`.`t1`.`id` AS `id`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (`test`.`t1`.`title` = 'a10')
SELECT * FROM t1 WHERE title = 'a10';
class id title
10 10 a10
SELECT * FROM t1 WHERE title = 'a5000';
class id title
5000 5000 a5000
SELECT * FROM t1 WHERE title = 'a10000';
class id title
10000 10000 a10000
SELECT * FROM t1 WHERE title = 'a10010';
class id title
DROP TABLE t1;
# Test Blob
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
SET SESSION debug="+d,crash_commit_before";
ALTER TABLE t1 DROP COLUMN c;
ERROR HY000: Lost connection to MySQL server during query
Note 1003 /* select#1 */ select `test`.`t1`.`class` AS `class`,`test`.`t1`.`id` AS `id`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (`test`.`t1`.`title` = 'a10')
SELECT * FROM t1 WHERE title = 'a10';
class id title
10 10 a10
SELECT * FROM t1 WHERE title = 'a5000';
class id title
5000 5000 a5000
SELECT * FROM t1 WHERE title = 'a10000';
class id title
10000 10000 a10000
SELECT * FROM t1 WHERE title = 'a10010';
class id title
DROP TABLE t1;
# Test Blob
SET GLOBAL innodb_file_per_table=1;
CREATE TABLE t1(
a INT PRIMARY KEY,
b TEXT,
c TEXT) ENGINE=InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4;
INSERT INTO t1 VALUES
(1, REPEAT('a',10000), 'a'),
(2, REPEAT('b',20000), 'b'),
(3, REPEAT('c',40000), 'c'),
(4, REPEAT('d',60000), 'd');
SELECT CHAR_LENGTH(b) FROM t1;
CHAR_LENGTH(b)
10000
20000
40000
60000
SET SESSION debug="+d,crash_commit_before";
ALTER TABLE t1 DROP COLUMN c;
ERROR HY000: Lost connection to MySQL server during query