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Bug #43054 Assertion `!table->auto_increment_field_not_null' failed when

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redefining trigger
      
The 'table->auto_increment_field_not_null' flag is only valid within
processing of a single row, and should be set to FALSE before
navigating to the next row, or exiting the operation.
      
This bug was caused by an SQL error occuring while executing a trigger
after the flag had been set, so the normal resetting was bypassed.
The table object was then returned to the table share's cache in
a dirty condition.   When the table object was reused, an assert
caught that the flag was set.
      
This patch explicitly clears the flag on error/abort.


Backported from mysql-6.0-codebase  revid: 2617.52.1
This commit is contained in:
Magne Mahre
2009-10-15 14:53:06 +02:00
parent 7e895de84f
commit a363c06ed0
3 changed files with 88 additions and 0 deletions
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34
mysql-test/r/create.result
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@ -1922,3 +1922,37 @@ ERROR 42000: You have an error in your SQL syntax; check the manual that corresp
# -- End of Bug#45829
End of 5.1 tests
# --
# -- Bug #43054 Assertion `!table->auto_increment_field_not_null'
# -- failed when redefining trigger
CREATE TABLE B (
pk INTEGER AUTO_INCREMENT,
int_key INTEGER NOT NULL,
PRIMARY KEY (pk),
KEY (int_key)
);
INSERT IGNORE INTO B VALUES ('9', '9');
CREATE TABLE IF NOT EXISTS t1 (
`pk` INTEGER NOT NULL AUTO_INCREMENT ,
`int` INTEGER ,
PRIMARY KEY ( `pk` )
) SELECT `pk` , `int_key` FROM B ;
CREATE TRIGGER f BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
INSERT INTO t1 ( `int` ) VALUES (4 ),( 8 ),( 2 ) ;
END ; |
CREATE TABLE IF NOT EXISTS t1 (
`pk` INTEGER NOT NULL AUTO_INCREMENT ,
`int` INTEGER ,
PRIMARY KEY ( `pk` )
) SELECT `pk` , `int_key` FROM B ;
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger.
CREATE TRIGGER f BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
UPDATE A SET `pk`=1 WHERE `pk`=0 ;
END ;|
ERROR 42000: This version of MySQL doesn't yet support 'multiple triggers with the same action time and event for one table'
DROP TABLE t1;
DROP TABLE B;