DELETE FROM mysql.user WHERE User LIKE 'mysqltest_%';
DELETE FROM mysql.db WHERE User LIKE 'mysqltest_%';
DELETE FROM mysql.tables_priv WHERE User LIKE 'mysqltest_%';
DELETE FROM mysql.columns_priv WHERE User LIKE 'mysqltest_%';
FLUSH PRIVILEGES;
DROP DATABASE IF EXISTS mysqltest_db1;
CREATE DATABASE mysqltest_db1;
CREATE USER mysqltest_dfn@localhost;
CREATE USER mysqltest_inv@localhost;
GRANT CREATE, TRIGGER ON mysqltest_db1.* TO mysqltest_dfn@localhost;

---> connection: wl2818_definer_con
CREATE TABLE t1(num_value INT);
CREATE TABLE t2(user_str TEXT);
CREATE TRIGGER wl2818_trg1 BEFORE INSERT ON t1 FOR EACH ROW INSERT INTO t2 VALUES(CURRENT_USER());

---> patching t1.TRG...

CREATE TRIGGER wl2818_trg2 AFTER INSERT ON t1
FOR EACH ROW
INSERT INTO t2 VALUES(CURRENT_USER());
Warnings:
Warning	1454	No definer attribute for trigger 'mysqltest_db1'.'wl2818_trg1'. The trigger will be activated under the authorization of the invoker, which may have insufficient privileges. Please recreate the trigger.

SELECT trigger_name, definer FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;
trigger_name	definer
wl2818_trg1	
wl2818_trg2	mysqltest_dfn@localhost

SELECT * FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;
TRIGGER_CATALOG	TRIGGER_SCHEMA	TRIGGER_NAME	EVENT_MANIPULATION	EVENT_OBJECT_CATALOG	EVENT_OBJECT_SCHEMA	EVENT_OBJECT_TABLE	ACTION_ORDER	ACTION_CONDITION	ACTION_STATEMENT	ACTION_ORIENTATION	ACTION_TIMING	ACTION_REFERENCE_OLD_TABLE	ACTION_REFERENCE_NEW_TABLE	ACTION_REFERENCE_OLD_ROW	ACTION_REFERENCE_NEW_ROW	CREATED	SQL_MODE	DEFINER	CHARACTER_SET_CLIENT	COLLATION_CONNECTION	DATABASE_COLLATION
def	mysqltest_db1	wl2818_trg1	INSERT	def	mysqltest_db1	t1	0	NULL	INSERT INTO t2 VALUES(CURRENT_USER())	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL			latin1	latin1_swedish_ci	latin1_swedish_ci
def	mysqltest_db1	wl2818_trg2	INSERT	def	mysqltest_db1	t1	0	NULL	INSERT INTO t2 VALUES(CURRENT_USER())	ROW	AFTER	NULL	NULL	OLD	NEW	NULL		mysqltest_dfn@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
DROP TRIGGER wl2818_trg1;
Warnings:
Warning	1454	No definer attribute for trigger 'mysqltest_db1'.'wl2818_trg1'. The trigger will be activated under the authorization of the invoker, which may have insufficient privileges. Please recreate the trigger.
DROP TRIGGER wl2818_trg2;
use mysqltest_db1;
DROP TABLE t1;
DROP TABLE t2;
DROP USER mysqltest_dfn@localhost;
DROP USER mysqltest_inv@localhost;
DROP DATABASE mysqltest_db1;
USE test;
#
# Bug#45235: 5.1 does not support 5.0-only syntax triggers in any way
#
DROP TABLE IF EXISTS t1, t2, t3;
CREATE TABLE t1 ( a INT );
CREATE TABLE t2 ( a INT );
CREATE TABLE t3 ( a INT );
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t2 VALUES (1), (2), (3);
INSERT INTO t3 VALUES (1), (2), (3);
# We simulate importing a trigger from 5.0 by writing a .TRN file for
# each trigger plus a .TRG file the way MySQL 5.0 would have done it, 
# with syntax allowed in 5.0 only.
#
# Note that in 5.0 the following lines are missing from t1.TRG:
#
# client_cs_names='latin1'
# connection_cl_names='latin1_swedish_ci'
# db_cl_names='latin1_swedish_ci'
FLUSH TABLE t1;
FLUSH TABLE t2;
# We will get parse errors for most DDL and DML statements when the table
# has broken triggers. The parse error refers to the first broken 
# trigger.
CREATE TRIGGER tr16 AFTER UPDATE ON t1 FOR EACH ROW INSERT INTO t1 VALUES (1);
ERROR 42000: Trigger 'tr13' has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a USING t1 a' at line 1'
CREATE TRIGGER tr22 BEFORE INSERT ON t2 FOR EACH ROW DELETE FROM non_existing_table;
ERROR 42000: Unknown trigger has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Not allowed syntax here, and trigger name cant be extracted either.' at line 1'
SHOW TRIGGERS;
Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer	character_set_client	collation_connection	Database Collation
tr11	INSERT	t1	DELETE FROM t3	BEFORE	NULL		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
tr12	INSERT	t1	DELETE FROM t3	AFTER	NULL		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
tr14	DELETE	t1	DELETE FROM non_existing_table	AFTER	NULL		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
INSERT INTO t1 VALUES (1);
ERROR 42000: Trigger 'tr13' has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a USING t1 a' at line 1'
INSERT INTO t2 VALUES (1);
ERROR 42000: Unknown trigger has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'Not allowed syntax here, and trigger name cant be extracted either.' at line 1'
DELETE FROM t1;
ERROR 42000: Trigger 'tr13' has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a USING t1 a' at line 1'
UPDATE t1 SET a = 1 WHERE a = 1;
ERROR 42000: Trigger 'tr13' has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a USING t1 a' at line 1'
SELECT * FROM t1;
a
1
2
3
RENAME TABLE t1 TO t1_2;
ERROR 42000: Trigger 'tr13' has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a USING t1 a' at line 1'
SHOW TRIGGERS;
Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer	character_set_client	collation_connection	Database Collation
tr11	INSERT	t1	DELETE FROM t3	BEFORE	NULL		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
tr12	INSERT	t1	DELETE FROM t3	AFTER	NULL		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
tr14	DELETE	t1	DELETE FROM non_existing_table	AFTER	NULL		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
DROP TRIGGER tr11;
Warnings:
Warning	1603	Triggers for table `test`.`t1` have no creation context
DROP TRIGGER tr12;
DROP TRIGGER tr13;
DROP TRIGGER tr14;
DROP TRIGGER tr15;
SHOW TRIGGERS;
Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer	character_set_client	collation_connection	Database Collation
# Make sure there is no trigger file left.
# We write the same trigger files one more time to test DROP TABLE.
FLUSH TABLE t1;
FLUSH TABLE t2;
DROP TABLE t1;
Warnings:
Warning	1603	Triggers for table `test`.`t1` have no creation context
DROP TABLE t2;
Warnings:
Warning	1603	Triggers for table `test`.`t2` have no creation context
DROP TABLE t3;
# Make sure there is no trigger file left.
CREATE TABLE t1 ( a INT );
CREATE TABLE t2 ( a INT );
INSERT INTO t1 VALUES (1), (2), (3);
INSERT INTO t2 VALUES (1), (2), (3);
# We write three trigger files. First trigger is syntaxically incorrect, next trigger is correct
# and last trigger is broken.
# Next we try to execute SHOW CREATE TRGGIR command for broken trigger and then try to drop one.
FLUSH TABLE t1;
SHOW CREATE TRIGGER tr12;
Trigger	sql_mode	SQL Original Statement	character_set_client	collation_connection	Database Collation
tr12		CREATE DEFINER=`root`@`localhost` TRIGGER tr12 BEFORE INSERT ON t1 FOR EACH ROW DELETE FROM t2	latin1	latin1_swedish_ci	latin1_swedish_ci
Warnings:
Warning	1603	Triggers for table `test`.`t1` have no creation context
SHOW CREATE TRIGGER tr11;
Trigger	sql_mode	SQL Original Statement	character_set_client	collation_connection	Database Collation
tr11		CREATE DEFINER=`root`@`localhost` TRIGGER tr11 BEFORE DELETE ON t1 FOR EACH ROW DELETE FROM t1 a USING t1 a	latin1	latin1_swedish_ci	latin1_swedish_ci
DROP TRIGGER tr12;
DROP TRIGGER tr11;
DROP TABLE t1;
DROP TABLE t2;