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branches/5.1: Add test cases and fix a bug where the last AUTOINC cached value

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was not reset to 0 when the table was truncated.

Bug #37531 : After truncate, auto_increment behaves incorrectly for InnoDB
This commit is contained in:
sunny 2008-06-26 12:55:43 +00:00
parent f83dbc14ea
commit 1c20025ea8
3 changed files with 124 additions and 0 deletions
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8
handler/ha_innodb.cc
View file

@ -5817,6 +5817,14 @@ ha_innobase::info(
if (thd_sql_command(user_thd) == SQLCOM_TRUNCATE) {
n_rows = 0;
/* We need to reset the prebuilt value too, otherwise
checks for values greater than the last value written
to the table will fail and the autoinc counter will
not be updated. This will force write_row() into
attempting an update of the table's AUTOINC counter. */
prebuilt->last_value = 0;
}
stats.records = (ha_rows)n_rows;

82
mysql-test/innodb-autoinc.result
View file

@ -87,3 +87,85 @@ SELECT * FROM t1;
c1 c2
18446744073709551615 NULL
DROP TABLE t1;
CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
c1
1
2
3
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SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`c1`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1
TRUNCATE TABLE t1;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`c1`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
c1
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2
3
4
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SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`c1`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1
DROP TABLE t1;
CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
c1
1
2
3
4
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SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`c1`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1
DELETE FROM t1;
SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`c1`)
) ENGINE=InnoDB AUTO_INCREMENT=7 DEFAULT CHARSET=latin1
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
c1
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SHOW CREATE TABLE t1;
Table Create Table
t1 CREATE TABLE `t1` (
`c1` int(11) NOT NULL AUTO_INCREMENT,
PRIMARY KEY (`c1`)
) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=latin1
DROP TABLE t1;

34
mysql-test/innodb-autoinc.test
View file

@ -105,3 +105,37 @@ INSERT INTO t1 VALUES (18446744073709551615, null);
INSERT INTO t1 (c2) VALUES ('innodb');
SELECT * FROM t1;
DROP TABLE t1;
#
# Bug 37531
# After truncate, auto_increment behaves incorrectly for InnoDB
#
CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
SHOW CREATE TABLE t1;
TRUNCATE TABLE t1;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
SHOW CREATE TABLE t1;
DROP TABLE t1;
#
# Deleting all records should not reset the AUTOINC counter.
#
CREATE TABLE t1(c1 INT PRIMARY KEY AUTO_INCREMENT) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
SHOW CREATE TABLE t1;
DELETE FROM t1;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t1 VALUES (NULL), (NULL), (NULL);
SELECT c1 FROM t1;
SHOW CREATE TABLE t1;
DROP TABLE t1;