connect  addconroot1, localhost, root,,;
connect  addconroot2, localhost, root,,;
connect  addconwithoutdb, localhost, root,,*NO-ONE*;
connection default;
create table t1 (i int);
create trigger trg before insert on t1 for each row set @a:=1;
set @a:=0;
select @a;
@a
0
insert into t1 values (1);
select @a;
@a
1
drop trigger trg;
create trigger trg before insert on t1 for each row set @a:=new.i;
insert into t1 values (123);
select @a;
@a
123
drop trigger trg;
drop table t1;
create table t1 (i int not null, j int);
create trigger trg before insert on t1 for each row 
begin 
if isnull(new.j) then
set new.j:= new.i * 10;
end if;
end|
insert into t1 (i) values (1)|
insert into t1 (i,j) values (2, 3)|
select * from t1|
i	j
1	10
2	3
drop trigger trg|
drop table t1|
create table t1 (i int not null primary key);
create trigger trg after insert on t1 for each row 
set @a:= if(@a,concat(@a, ":", new.i), new.i);
set @a:="";
insert into t1 values (2),(3),(4),(5);
select @a;
@a
2:3:4:5
drop trigger trg;
drop table t1;
create table t1 (aid int not null primary key, balance int not null default 0);
insert into t1 values (1, 1000), (2,3000);
create trigger trg before update on t1 for each row 
begin
declare loc_err varchar(255);
if abs(new.balance - old.balance) > 1000 then
set new.balance:= old.balance;
set loc_err := concat("Too big change for aid = ", new.aid);
set @update_failed:= if(@update_failed, concat(@a, ":", loc_err), loc_err);
end if;
end|
set @update_failed:=""|
update t1 set balance=1500|
select @update_failed;
select * from t1|
@update_failed
Too big change for aid = 2
aid	balance
1	1500
2	3000
drop trigger trg|
drop table t1|
create table t1 (i int);
insert into t1 values (1),(2),(3),(4);
create trigger trg after update on t1 for each row 
set @total_change:=@total_change + new.i - old.i;
set @total_change:=0;
update t1 set i=3;
select @total_change;
@total_change
2
drop trigger trg;
drop table t1;
create table t1 (i int);
insert into t1 values (1),(2),(3),(4);
create trigger trg before delete on t1 for each row 
set @del_sum:= @del_sum + old.i;
set @del_sum:= 0;
delete from t1 where i <= 3;
select @del_sum;
@del_sum
6
drop trigger trg;
drop table t1;
create table t1 (i int);
insert into t1 values (1),(2),(3),(4);
create trigger trg after delete on t1 for each row set @del:= 1;
set @del:= 0;
delete from t1 where i <> 0;
select @del;
@del
1
drop trigger trg;
drop table t1;
create table t1 (i int, j int);
create trigger trg1 before insert on t1 for each row 
begin
if new.j > 10 then
set new.j := 10;
end if;
end|
create trigger trg2 before update on t1 for each row 
begin
if old.i % 2 = 0 then
set new.j := -1;
end if;
end|
create trigger trg3 after update on t1 for each row 
begin
if new.j = -1 then
set @fired:= "Yes";
end if;
end|
set @fired:="";
insert into t1 values (1,2),(2,3),(3,14);
select @fired;
@fired

select * from t1;
i	j
1	2
2	3
3	10
update t1 set j= 20;
select @fired;
@fired
Yes
select * from t1;
i	j
1	20
2	-1
3	20
drop trigger trg1;
drop trigger trg2;
drop trigger trg3;
drop table t1;
create table t1 (id int not null primary key, data int);
create trigger t1_bi before insert on t1 for each row
set @log:= concat(@log, "(BEFORE_INSERT: new=(id=", new.id, ", data=", new.data,"))");
create trigger t1_ai after insert on t1 for each row
set @log:= concat(@log, "(AFTER_INSERT: new=(id=", new.id, ", data=", new.data,"))");
create trigger t1_bu before update on t1 for each row
set @log:= concat(@log, "(BEFORE_UPDATE: old=(id=", old.id, ", data=", old.data,
") new=(id=", new.id, ", data=", new.data,"))");
create trigger t1_au after update on t1 for each row
set @log:= concat(@log, "(AFTER_UPDATE: old=(id=", old.id, ", data=", old.data,
") new=(id=", new.id, ", data=", new.data,"))");
create trigger t1_bd before delete on t1 for each row
set @log:= concat(@log, "(BEFORE_DELETE: old=(id=", old.id, ", data=", old.data,"))");
create trigger t1_ad after delete on t1 for each row
set @log:= concat(@log, "(AFTER_DELETE: old=(id=", old.id, ", data=", old.data,"))");
set @log:= "";
insert into t1 values (1, 1);
select @log;
@log
(BEFORE_INSERT: new=(id=1, data=1))(AFTER_INSERT: new=(id=1, data=1))
set @log:= "";
insert ignore t1 values (1, 2);
Warnings:
Warning	1062	Duplicate entry '1' for key 'PRIMARY'
select @log;
@log
(BEFORE_INSERT: new=(id=1, data=2))
set @log:= "";
insert into t1 (id, data) values (1, 3), (2, 2) on duplicate key update data= data + 1;
select @log;
@log
(BEFORE_INSERT: new=(id=1, data=3))(BEFORE_UPDATE: old=(id=1, data=1) new=(id=1, data=2))(AFTER_UPDATE: old=(id=1, data=1) new=(id=1, data=2))(BEFORE_INSERT: new=(id=2, data=2))(AFTER_INSERT: new=(id=2, data=2))
set @log:= "";
replace t1 values (1, 4), (3, 3);
select @log;
@log
(BEFORE_INSERT: new=(id=1, data=4))(BEFORE_DELETE: old=(id=1, data=2))(AFTER_DELETE: old=(id=1, data=2))(AFTER_INSERT: new=(id=1, data=4))(BEFORE_INSERT: new=(id=3, data=3))(AFTER_INSERT: new=(id=3, data=3))
drop trigger t1_bd;
drop trigger t1_ad;
set @log:= "";
replace t1 values (1, 5);
select @log;
@log
(BEFORE_INSERT: new=(id=1, data=5))(AFTER_INSERT: new=(id=1, data=5))
drop table t1;
create table t1 (id int primary key, data varchar(10), fk int);
create table t2 (event varchar(100));
create table t3 (id int primary key);
create trigger t1_ai after insert on t1 for each row 
insert into t2 values (concat("INSERT INTO t1 id=", new.id, " data='", new.data, "'"));
insert into t1 (id, data) values (1, "one"), (2, "two");
select * from t1;
id	data	fk
1	one	NULL
2	two	NULL
select * from t2;
event
INSERT INTO t1 id=1 data='one'
INSERT INTO t1 id=2 data='two'
drop trigger t1_ai;
create trigger t1_bi before insert on t1 for each row
begin
if exists (select id from t3 where id=new.fk) then
insert into t2 values (concat("INSERT INTO t1 id=", new.id, " data='", new.data, "' fk=", new.fk));
else
insert into t2 values (concat("INSERT INTO t1 FAILED id=", new.id, " data='", new.data, "' fk=", new.fk));
set new.id= NULL;
end if;
end|
insert into t3 values (1);
insert into t1 values (4, "four", 1), (5, "five", 2);
Warnings:
Warning	1048	Column 'id' cannot be null
select * from t1;
id	data	fk
1	one	NULL
2	two	NULL
4	four	1
0	five	2
select * from t2;
event
INSERT INTO t1 id=1 data='one'
INSERT INTO t1 id=2 data='two'
INSERT INTO t1 id=4 data='four' fk=1
INSERT INTO t1 FAILED id=5 data='five' fk=2
drop table t1, t2, t3;
create table t1 (id int primary key, data varchar(10));
create table t2 (seq int);
insert into t2 values (10);
create function f1 () returns int return (select max(seq) from t2);
create trigger t1_bi before insert on t1 for each row
begin
if new.id > f1() then
set new.id:= f1();
end if;
end|
insert into t1 values (1, "first");
insert into t1 values (f1(), "max");
select * from t1;
id	data
1	first
10	max
drop table t1, t2;
drop function f1;
create table t1 (id int primary key, fk_t2 int);
create table t2 (id int primary key, fk_t3 int);
create table t3 (id int primary key);
insert into t1 values (1,1), (2,1), (3,2);
insert into t2 values (1,1), (2,2);
insert into t3 values (1), (2);
create trigger t3_ad after delete on t3 for each row
delete from t2 where fk_t3=old.id;
create trigger t2_ad after delete on t2 for each row
delete from t1 where fk_t2=old.id;
delete from t3 where id = 1;
select * from t1 left join (t2 left join t3 on t2.fk_t3 = t3.id) on t1.fk_t2 = t2.id;
id	fk_t2	id	fk_t3	id
3	2	2	2	2
drop table t1, t2, t3;
create table t1 (id int primary key, copy int);
create table t2 (id int primary key, data int);
insert into t2 values (1,1), (2,2);
create trigger t1_bi before insert on t1 for each row
set new.copy= (select data from t2 where id = new.id);
create trigger t1_bu before update on t1 for each row
set new.copy= (select data from t2 where id = new.id);
insert into t1 values (1,3), (2,4), (3,3);
update t1 set copy= 1 where id = 2;
select * from t1;
id	copy
1	1
2	2
3	NULL
drop table t1, t2;
create table t1 (i int);
create table t3 (i int);
create trigger trg before insert on t1 for each row set @a:= old.i;
ERROR HY000: There is no OLD row in on INSERT trigger
create trigger trg before delete on t1 for each row set @a:= new.i;
ERROR HY000: There is no NEW row in on DELETE trigger
create trigger trg before update on t1 for each row set old.i:=1;
ERROR HY000: Updating of OLD row is not allowed in trigger
create trigger trg before delete on t1 for each row set new.i:=1;
ERROR HY000: There is no NEW row in on DELETE trigger
create trigger trg after update on t1 for each row set new.i:=1;
ERROR HY000: Updating of NEW row is not allowed in after trigger
create trigger trg before update on t1 for each row set new.j:=1;
ERROR 42S22: Unknown column 'j' in 'NEW'
create trigger trg before update on t1 for each row set @a:=old.j;
ERROR 42S22: Unknown column 'j' in 'OLD'
create trigger trg before insert on t2 for each row set @a:=1;
ERROR 42S02: Table 'test.t2' doesn't exist
create trigger trg before insert on t1 for each row set @a:=1;
create trigger trg after insert on t1 for each row set @a:=1;
ERROR HY000: Trigger 'test.trg' already exists
create trigger trg2 before insert on t1 for each row set @a:=1;
drop trigger trg2;
create trigger trg before insert on t3 for each row set @a:=1;
ERROR HY000: Trigger 'test.trg' already exists
create trigger trg2 before insert on t3 for each row set @a:=1;
drop trigger trg2;
drop trigger trg;
drop trigger trg;
ERROR HY000: Trigger does not exist
create view v1 as select * from t1;
create trigger trg before insert on v1 for each row set @a:=1;
ERROR HY000: 'test.v1' is not of type 'BASE TABLE'
drop view v1;
drop table t1;
drop table t3;
create temporary table t1 (i int);
create trigger trg before insert on t1 for each row set @a:=1;
ERROR HY000: Trigger's 't1' is a view, temporary table or sequence
drop table t1;
create table t1 (x1col char);
create trigger tx1 before insert on t1 for each row set new.x1col = 'x';
insert into t1 values ('y');
drop trigger tx1;
drop table t1;
create table t1 (i int) engine=myisam;
insert into t1 values (1), (2);
create trigger trg1 before delete on t1 for each row set @del_before:= @del_before + old.i;
create trigger trg2 after delete on t1 for each row set @del_after:= @del_after + old.i;
set @del_before:=0, @del_after:= 0;
delete from t1;
select @del_before, @del_after;
@del_before	@del_after
3	3
drop trigger trg1;
drop trigger trg2;
drop table t1;
create table t1 (a int);
create trigger trg1 before insert on t1 for each row set new.a= 10;
drop table t1;
create table t1 (a int);
insert into t1 values ();
select * from t1;
a
NULL
drop table t1;
create database mysqltest;
use mysqltest;
create table t1 (i int);
create trigger trg1 before insert on t1 for each row set @a:= 1;
drop database mysqltest;
use test;
create database mysqltest;
create table mysqltest.t1 (i int);
create trigger trg1 before insert on mysqltest.t1 for each row set @a:= 1;
ERROR HY000: Trigger in wrong schema
use mysqltest;
create trigger test.trg1 before insert on t1 for each row set @a:= 1;
ERROR 42S02: Table 'test.t1' doesn't exist
drop database mysqltest;
use test;
create table t1 (i int, j int default 10, k int not null, key (k));
create table t2 (i int);
insert into t1 (i, k) values (1, 1);
insert into t2 values (1);
create trigger trg1 before update on t1 for each row set @a:= @a + new.j - old.j;
create trigger trg2 after update on t1 for each row set @b:= "Fired";
set @a:= 0, @b:= "";
update t1, t2 set j = j + 10 where t1.i = t2.i;
select @a, @b;
@a	@b
10	Fired
insert into t1 values (2, 13, 2);
insert into t2 values (2);
set @a:= 0, @b:= "";
update t1, t2 set j = j + 15 where t1.i = t2.i and t1.k >= 2;
select @a, @b;
@a	@b
15	Fired
create trigger trg3 before delete on t1 for each row set @c:= @c + old.j;
create trigger trg4 before delete on t2 for each row set @d:= @d + old.i;
create trigger trg5 after delete on t1 for each row set @e:= "After delete t1 fired";
create trigger trg6 after delete on t2 for each row set @f:= "After delete t2 fired";
set @c:= 0, @d:= 0, @e:= "", @f:= "";
delete t1, t2 from t1, t2 where t1.i = t2.i;
select @c, @d, @e, @f;
@c	@d	@e	@f
48	3	After delete t1 fired	After delete t2 fired
drop table t1, t2;
create table t1 (i int, j int default 10)|
create table t2 (i int)|
insert into t2 values (1), (2)|
create trigger trg1 before insert on t1 for each row 
begin
if new.i = 1 then
set new.j := 1;
end if;
end|
create trigger trg2 after insert on t1 for each row set @a:= 1|
set @a:= 0|
insert into t1 (i) select * from t2|
select * from t1|
i	j
1	1
2	10
select @a|
@a
1
drop table t1, t2|
create table t1 (i int, j int, k int);
create trigger trg1 before insert on t1 for each row set new.k = new.i;
create trigger trg2 after insert on t1 for each row set @b:= "Fired";
set @b:="";
load data infile '../../std_data/rpl_loaddata.dat' into table t1 (@a, i);
select *, @b from t1;
i	j	k	@b
10	NULL	10	Fired
15	NULL	15	Fired
set @b:="";
load data infile '../../std_data/loaddata5.dat' into table t1 fields terminated by '' enclosed by '' (i, j);
Warnings:
Note	1265	Data truncated for column 'i' at row 1
Note	1265	Data truncated for column 'j' at row 1
Note	1265	Data truncated for column 'i' at row 2
Note	1265	Data truncated for column 'j' at row 2
Note	1265	Data truncated for column 'i' at row 3
Note	1265	Data truncated for column 'j' at row 3
select *, @b from t1;
i	j	k	@b
10	NULL	10	Fired
15	NULL	15	Fired
1	2	1	Fired
3	4	3	Fired
5	6	5	Fired
drop table t1;
create table t1 (i int, at int, k int, key(k)) engine=myisam;
create table t2 (i int);
insert into t1 values (1, 1, 1);
insert into t2 values (1), (2), (3);
create trigger ai after insert on t1 for each row set @a:= new.at;
create trigger au after update on t1 for each row set @a:= new.at;
create trigger ad after delete on t1 for each row set @a:= old.at;
alter table t1 drop column at;
select * from t1;
i	k
1	1
insert into t1 values (2, 1);
ERROR 42S22: Unknown column 'at' in 'NEW'
select * from t1;
i	k
1	1
2	1
update t1 set k = 2 where i = 2;
ERROR 42S22: Unknown column 'at' in 'NEW'
select * from t1;
i	k
1	1
2	2
delete from t1 where i = 2;
ERROR 42S22: Unknown column 'at' in 'OLD'
select * from t1;
i	k
1	1
load data infile '../../std_data/loaddata5.dat' into table t1 fields terminated by '' enclosed by '' (i, k);
ERROR 42S22: Unknown column 'at' in 'NEW'
select * from t1;
i	k
1	1
1	2
insert into t1 select 3, 3;
ERROR 42S22: Unknown column 'at' in 'NEW'
select * from t1;
i	k
1	1
1	2
3	3
update t1, t2 set k = k + 10 where t1.i = t2.i;
ERROR 42S22: Unknown column 'at' in 'NEW'
select * from t1;
i	k
1	11
1	2
3	3
update t1, t2 set k = k + 10 where t1.i = t2.i and k < 3;
ERROR 42S22: Unknown column 'at' in 'NEW'
select * from t1;
i	k
1	11
1	12
3	3
delete t1, t2 from t1 straight_join t2 where t1.i = t2.i;
ERROR 42S22: Unknown column 'at' in 'OLD'
select * from t1;
i	k
1	12
3	3
delete t2, t1 from t2 straight_join t1 where t1.i = t2.i;
ERROR 42S22: Unknown column 'at' in 'OLD'
select * from t1;
i	k
3	3
alter table t1 add primary key (i);
insert into t1 values (3, 4) on duplicate key update k= k + 10;
ERROR 42S22: Unknown column 'at' in 'NEW'
select * from t1;
i	k
3	13
replace into t1 values (3, 3);
ERROR 42S22: Unknown column 'at' in 'OLD'
select * from t1;
i	k
drop table t1, t2;
create table t1 (i int, bt int, k int, key(k)) engine=myisam;
create table t2 (i int);
insert into t1 values (1, 1, 1), (2, 2, 2);
insert into t2 values (1), (2), (3);
create trigger bi before insert on t1 for each row set @a:= new.bt;
create trigger bu before update on t1 for each row set @a:= new.bt;
create trigger bd before delete on t1 for each row set @a:= old.bt;
alter table t1 drop column bt;
insert into t1 values (3, 3);
ERROR 42S22: Unknown column 'bt' in 'NEW'
select * from t1;
i	k
1	1
2	2
update t1 set i = 2;
ERROR 42S22: Unknown column 'bt' in 'NEW'
select * from t1;
i	k
1	1
2	2
delete from t1;
ERROR 42S22: Unknown column 'bt' in 'OLD'
select * from t1;
i	k
1	1
2	2
load data infile '../../std_data/loaddata5.dat' into table t1 fields terminated by '' enclosed by '' (i, k);
ERROR 42S22: Unknown column 'bt' in 'NEW'
select * from t1;
i	k
1	1
2	2
insert into t1 select 3, 3;
ERROR 42S22: Unknown column 'bt' in 'NEW'
select * from t1;
i	k
1	1
2	2
update t1, t2 set k = k + 10 where t1.i = t2.i;
ERROR 42S22: Unknown column 'bt' in 'NEW'
select * from t1;
i	k
1	1
2	2
update t1, t2 set k = k + 10 where t1.i = t2.i and k < 2;
ERROR 42S22: Unknown column 'bt' in 'NEW'
select * from t1;
i	k
1	1
2	2
delete t1, t2 from t1 straight_join t2 where t1.i = t2.i;
ERROR 42S22: Unknown column 'bt' in 'OLD'
select * from t1;
i	k
1	1
2	2
delete t2, t1 from t2 straight_join t1 where t1.i = t2.i;
ERROR 42S22: Unknown column 'bt' in 'OLD'
select * from t1;
i	k
1	1
2	2
alter table t1 add primary key (i);
drop trigger bi;
insert into t1 values (2, 4) on duplicate key update k= k + 10;
ERROR 42S22: Unknown column 'bt' in 'NEW'
select * from t1;
i	k
1	1
2	2
replace into t1 values (2, 4);
ERROR 42S22: Unknown column 'bt' in 'OLD'
select * from t1;
i	k
1	1
2	2
drop table t1, t2;
drop function if exists bug5893;
create table t1 (col1 int, col2 int);
insert into t1 values (1, 2);
create function bug5893 () returns int return 5;
create trigger t1_bu before update on t1 for each row set new.col1= bug5893();
drop function bug5893;
update t1 set col2 = 4;
ERROR 42000: FUNCTION test.bug5893 does not exist
drop trigger t1_bu;
drop table t1;
set sql_mode='ansi';
create table t1 ("t1 column" int);
create trigger t1_bi before insert on t1 for each row set new."t1 column" = 5;
set sql_mode="";
insert into t1 values (0);
create trigger t1_af after insert on t1 for each row set @a=10;
insert into t1 values (0);
select * from t1;
t1 column
5
5
select @a;
@a
10
show triggers;
Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer	character_set_client	collation_connection	Database Collation
t1_bi	INSERT	t1	set new."t1 column" = 5	BEFORE	#	REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ANSI	root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
t1_af	INSERT	t1	set @a=10	AFTER	#		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
drop table t1;
set sql_mode="traditional";
create table t1 (a date);
insert into t1 values ('2004-01-00');
ERROR 22007: Incorrect date value: '2004-01-00' for column `test`.`t1`.`a` at row 1
set sql_mode="";
create trigger t1_bi before insert on t1 for each row set new.a = '2004-01-00';
set sql_mode="traditional";
insert into t1 values ('2004-01-01');
select * from t1;
a
2004-01-00
set sql_mode=default;
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` date DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
show triggers;
Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer	character_set_client	collation_connection	Database Collation
t1_bi	INSERT	t1	set new.a = '2004-01-00'	BEFORE	#		root@localhost	latin1	latin1_swedish_ci	latin1_swedish_ci
drop table t1;
create table t1 (id int);
create trigger t1_ai after insert on t1 for each row reset query cache;
ERROR 0A000: RESET is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row reset master;
ERROR 0A000: RESET is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row reset slave;
ERROR 0A000: RESET is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush hosts;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush tables with read lock;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush logs;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush status;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush slave;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush master;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush des_key_file;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush user_resources;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush tables;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
create trigger t1_ai after insert on t1 for each row flush privileges;
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure if exists p1;
create trigger t1_ai after insert on t1 for each row call p1();
create procedure p1() flush tables;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() reset query cache;
insert into t1 values (0);
ERROR 0A000: RESET is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() reset master;
insert into t1 values (0);
ERROR 0A000: RESET is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() reset slave;
insert into t1 values (0);
ERROR 0A000: RESET is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush hosts;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush privileges;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush tables with read lock;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush tables;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush logs;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush status;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush slave;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush master;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush des_key_file;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
create procedure p1() flush user_resources;
insert into t1 values (0);
ERROR 0A000: FLUSH is not allowed in stored function or trigger
drop procedure p1;
drop table t1;
create table t1 (id int, data int, username varchar(16));
insert into t1 (id, data) values (1, 0);
create trigger t1_whoupdated before update on t1 for each row
begin
declare user varchar(32);
declare i int;
select user() into user;
set NEW.username = user;
select count(*) from ((select 1) union (select 2)) as d1 into i;
end|
update t1 set data = 1;
connection addconroot1;
update t1 set data = 2;
connection default;
drop table t1;
create table t1 (c1 int, c2 datetime);
create trigger tr1 before insert on t1 for each row 
begin 
set new.c2= '2004-04-01';
select 'hello';
end|
ERROR 0A000: Not allowed to return a result set from a trigger
insert into t1 (c1) values (1),(2),(3);
select * from t1;
c1	c2
1	NULL
2	NULL
3	NULL
drop procedure if exists bug11587;
create procedure bug11587(x char(16))
begin
select "hello";
select "hello again";
end|
create trigger tr1 before insert on t1 for each row 
begin 
call bug11587();
set new.c2= '2004-04-02';
end|
insert into t1 (c1) values (4),(5),(6);
ERROR 0A000: Not allowed to return a result set from a trigger
select * from t1;
c1	c2
1	NULL
2	NULL
3	NULL
drop procedure bug11587;
drop table t1;
create table t1 (f1 integer);
create table t2 (f2 integer);
create trigger t1_ai after insert on t1
for each row insert into t2 values (new.f1+1);
create trigger t2_ai after insert on t2
for each row insert into t1 values (new.f2+1);
set @SAVE_SP_RECURSION_LEVELS=@@max_sp_recursion_depth;
set @@max_sp_recursion_depth=100;
insert into t1 values (1);
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
set @@max_sp_recursion_depth=@SAVE_SP_RECURSION_LEVELS;
select * from t1;
f1
1
select * from t2;
f2
2
drop trigger t1_ai;
drop trigger t2_ai;
create trigger t1_bu before update on t1
for each row insert into t1 values (2);
update t1 set f1= 10;
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
select * from t1;
f1
1
drop trigger t1_bu;
create trigger t1_bu before update on t1
for each row delete from t1 where f1=new.f1;
update t1 set f1= 10;
ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
select * from t1;
f1
1
drop trigger t1_bu;
create trigger t1_bi before insert on t1
for each row set new.f1=(select sum(f1) from t1);
insert into t1 values (3);
select * from t1;
f1
1
1
drop trigger t1_bi;
drop tables t1, t2;
create table t1 (id int);
create table t2 (id int);
create trigger t1_bi before insert on t1 for each row insert into t2 values (new.id);
prepare stmt1 from "insert into t1 values (10)";
create procedure p1() insert into t1 values (10);
call p1();
drop trigger t1_bi;
execute stmt1;
call p1();
deallocate prepare stmt1;
drop procedure p1;
create table t3 (id int);
create trigger t1_bi after insert on t1 for each row insert into t2 values (new.id);
prepare stmt1 from "insert into t1 values (10)";
create procedure p1() insert into t1 values (10);
call p1();
drop trigger t1_bi;
create trigger t1_bi after insert on t1 for each row insert into t3 values (new.id);
execute stmt1;
call p1();
deallocate prepare stmt1;
drop procedure p1;
drop table t1, t2, t3;
create table t1 (a int);
CREATE PROCEDURE `p1`()
begin
insert into t1 values (1);
end//
create trigger trg before insert on t1 for each row 
begin 
declare done int default 0;
set done= not done;
end//
CALL p1();
drop procedure p1;
drop table t1;
connection addconwithoutdb;
create trigger t1_bi before insert on test.t1 for each row set @a:=0;
ERROR 3D000: No database selected
create trigger test.t1_bi before insert on t1 for each row set @a:=0;
ERROR 42S02: Table 'test.t1' doesn't exist
drop trigger t1_bi;
ERROR 3D000: No database selected
connection default;
create table t1 (id int);
create trigger t1_bi before insert on t1 for each row set @a:=new.id;
create trigger t1_ai after insert on test.t1 for each row set @b:=new.id;
insert into t1 values (101);
select @a, @b;
@a	@b
101	101
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
test	t1_bi	test	t1	set @a:=new.id
test	t1_ai	test	t1	set @b:=new.id
rename table t1 to t2;
insert into t2 values (102);
select @a, @b;
@a	@b
102	102
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
test	t1_bi	test	t2	set @a:=new.id
test	t1_ai	test	t2	set @b:=new.id
alter table t2 rename to t3;
insert into t3 values (103);
select @a, @b;
@a	@b
103	103
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
test	t1_bi	test	t3	set @a:=new.id
test	t1_ai	test	t3	set @b:=new.id
alter table t3 rename to t4, add column val int default 0;
insert into t4 values (104, 1);
select @a, @b;
@a	@b
104	104
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
test	t1_bi	test	t4	set @a:=new.id
test	t1_ai	test	t4	set @b:=new.id
drop trigger t1_bi;
drop trigger t1_ai;
drop table t4;
create database mysqltest;
use mysqltest;
create table t1 (id int);
create trigger t1_bi before insert on t1 for each row set @a:=new.id;
insert into t1 values (101);
select @a;
@a
101
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test' or event_object_schema = 'mysqltest';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
mysqltest	t1_bi	mysqltest	t1	set @a:=new.id
rename table t1 to test.t2;
ERROR HY000: Trigger in wrong schema
insert into t1 values (102);
select @a;
@a
102
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test' or event_object_schema = 'mysqltest';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
mysqltest	t1_bi	mysqltest	t1	set @a:=new.id
drop trigger test.t1_bi;
ERROR HY000: Trigger does not exist
alter table t1 rename to test.t1;
ERROR HY000: Trigger in wrong schema
insert into t1 values (103);
select @a;
@a
103
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test' or event_object_schema = 'mysqltest';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
mysqltest	t1_bi	mysqltest	t1	set @a:=new.id
drop trigger test.t1_bi;
ERROR HY000: Trigger does not exist
alter table t1 rename to test.t1, add column val int default 0;
ERROR HY000: Trigger in wrong schema
insert into t1 values (104);
select @a;
@a
104
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test' or event_object_schema = 'mysqltest';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
mysqltest	t1_bi	mysqltest	t1	set @a:=new.id
show create table t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `id` int(11) DEFAULT NULL
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
drop trigger test.t1_bi;
ERROR HY000: Trigger does not exist
drop trigger t1_bi;
drop table t1;
drop database mysqltest;
use test;
create table t1 (id int);
create trigger t1_bi before insert on t1 for each row set @a:=new.id;
create trigger t1_ai after insert on t1 for each row set @b:=new.id;
insert into t1 values (101);
select @a, @b;
@a	@b
101	101
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
test	t1_bi	test	t1	set @a:=new.id
test	t1_ai	test	t1	set @b:=new.id
rename table t1 to t2;
ERROR HY000: Can't create/write to file './test/t1_ai.TRN~' (Errcode: 13 "Permission denied")
insert into t1 values (102);
select @a, @b;
@a	@b
102	102
select trigger_schema, trigger_name, event_object_schema,
event_object_table, action_statement from information_schema.triggers
where event_object_schema = 'test';
trigger_schema	trigger_name	event_object_schema	event_object_table	action_statement
test	t1_bi	test	t1	set @a:=new.id
test	t1_ai	test	t1	set @b:=new.id
drop trigger t1_bi;
drop trigger t1_ai;
drop table t1;
create table t1 (i int);
create trigger t1_bi before insert on t1 for each row return 0;
ERROR 42000: RETURN is only allowed in a FUNCTION
insert into t1 values (1);
drop table t1;
create table t1 (a varchar(64), b int);
create table t2 like t1;
create trigger t1_ai after insert on t1 for each row
set @a:= (select max(a) from t1);
insert into t1 (a) values
("Twas"),("brillig"),("and"),("the"),("slithy"),("toves"),
("Did"),("gyre"),("and"),("gimble"),("in"),("the"),("wabe");
create trigger t2_ai after insert on t2 for each row
set @a:= (select max(a) from t2);
insert into t2 select * from t1;
load data infile '../../std_data/words.dat' into table t1 (a);
drop trigger t1_ai;
drop trigger t2_ai;
create function f1() returns int return (select max(b) from t1);
insert into t1 values
("All",f1()),("mimsy",f1()),("were",f1()),("the",f1()),("borogoves",f1()),
("And",f1()),("the",f1()),("mome", f1()),("raths",f1()),("outgrabe",f1());
create function f2() returns int return (select max(b) from t2);
insert into t2 select a, f2() from t1;
load data infile '../../std_data/words.dat' into table t1 (a) set b:= f1();
drop function f1;
drop function f2;
drop table t1, t2;
create table t1(i int not null, j int not null, n numeric(15,2), primary key(i,j));
create table t2(i int not null, n numeric(15,2), primary key(i));
create trigger t1_ai after insert on t1 for each row
begin
declare sn numeric(15,2);
select sum(n) into sn from t1 where i=new.i;
replace into t2 values(new.i, sn);
end|
insert into t1 values
(1,1,10.00),(1,2,10.00),(1,3,10.00),(1,4,10.00),(1,5,10.00),
(1,6,10.00),(1,7,10.00),(1,8,10.00),(1,9,10.00),(1,10,10.00),
(1,11,10.00),(1,12,10.00),(1,13,10.00),(1,14,10.00),(1,15,10.00);
select * from t1;
i	j	n
1	1	10.00
1	2	10.00
1	3	10.00
1	4	10.00
1	5	10.00
1	6	10.00
1	7	10.00
1	8	10.00
1	9	10.00
1	10	10.00
1	11	10.00
1	12	10.00
1	13	10.00
1	14	10.00
1	15	10.00
select * from t2;
i	n
1	150.00
drop tables t1, t2;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
conn_id INT,
trigger_conn_id INT
);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
SET NEW.trigger_conn_id = CONNECTION_ID();
INSERT INTO t1 (conn_id, trigger_conn_id) VALUES (CONNECTION_ID(), -1);
connect  con1,localhost,root,,;
INSERT INTO t1 (conn_id, trigger_conn_id) VALUES (CONNECTION_ID(), -1);
connection default;
disconnect con1;
SELECT * FROM t1 WHERE conn_id != trigger_conn_id;
conn_id	trigger_conn_id
DROP TRIGGER t1_bi;
DROP TABLE t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (i1 INT);
SET @save_sql_mode=@@sql_mode;
SET SQL_MODE='';
CREATE TRIGGER t1_ai AFTER INSERT ON t1 FOR EACH ROW
SET @x = 5/0;
SET SQL_MODE='traditional';
CREATE TRIGGER t1_au AFTER UPDATE ON t1 FOR EACH ROW
SET @x = 5/0;
SET @x=1;
INSERT INTO t1 VALUES (@x);
SELECT @x;
@x
NULL
SET @x=2;
UPDATE t1 SET i1 = @x;
SELECT @x;
@x
NULL
SET SQL_MODE='';
SET @x=3;
INSERT INTO t1 VALUES (@x);
SELECT @x;
@x
NULL
SET @x=4;
UPDATE t1 SET i1 = @x;
SELECT @x;
@x
NULL
SET @@sql_mode=@save_sql_mode;
DROP TRIGGER t1_ai;
DROP TRIGGER t1_au;
DROP TABLE t1;
DROP TABLE IF EXISTS t1;
DROP PROCEDURE IF EXISTS p1;
DROP PROCEDURE IF EXISTS p2;
CREATE TABLE t1 (i1 INT);
INSERT INTO t1 VALUES (3);
CREATE PROCEDURE p1(OUT i1 INT) DETERMINISTIC NO SQL SET i1 = 5;
CREATE PROCEDURE p2(INOUT i1 INT) DETERMINISTIC NO SQL SET i1 = i1 * 7;
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
BEGIN
CALL p1(NEW.i1);
CALL p2(NEW.i1);
END//
UPDATE t1 SET i1 = 11 WHERE i1 = 3;
DROP TRIGGER t1_bu;
DROP PROCEDURE p2;
DROP PROCEDURE p1;
INSERT INTO t1 VALUES (13);
CREATE PROCEDURE p1(OUT i1 INT) DETERMINISTIC NO SQL SET @a = 17;
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
CALL p1(OLD.i1);
UPDATE t1 SET i1 = 19 WHERE i1 = 13;
ERROR 42000: OUT or INOUT argument 1 for routine test.p1 is not a variable or NEW pseudo-variable in BEFORE trigger
DROP TRIGGER t1_bu;
DROP PROCEDURE p1;
INSERT INTO t1 VALUES (23);
CREATE PROCEDURE p1(INOUT i1 INT) DETERMINISTIC NO SQL SET @a = i1 * 29;
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
CALL p1(OLD.i1);
UPDATE t1 SET i1 = 31 WHERE i1 = 23;
ERROR 42000: OUT or INOUT argument 1 for routine test.p1 is not a variable or NEW pseudo-variable in BEFORE trigger
DROP TRIGGER t1_bu;
DROP PROCEDURE p1;
INSERT INTO t1 VALUES (37);
CREATE PROCEDURE p1(OUT i1 INT) DETERMINISTIC NO SQL SET @a = 41;
CREATE TRIGGER t1_au AFTER UPDATE ON t1 FOR EACH ROW
CALL p1(NEW.i1);
UPDATE t1 SET i1 = 43 WHERE i1 = 37;
ERROR 42000: OUT or INOUT argument 1 for routine test.p1 is not a variable or NEW pseudo-variable in BEFORE trigger
DROP TRIGGER t1_au;
DROP PROCEDURE p1;
INSERT INTO t1 VALUES (47);
CREATE PROCEDURE p1(INOUT i1 INT) DETERMINISTIC NO SQL SET @a = i1 * 49;
CREATE TRIGGER t1_au AFTER UPDATE ON t1 FOR EACH ROW
CALL p1(NEW.i1);
UPDATE t1 SET i1 = 51 WHERE i1 = 47;
ERROR 42000: OUT or INOUT argument 1 for routine test.p1 is not a variable or NEW pseudo-variable in BEFORE trigger
DROP TRIGGER t1_au;
DROP PROCEDURE p1;
SELECT * FROM t1;
i1
35
13
23
43
51
DROP TABLE t1;
create trigger wont_work after update on mysql.user for each row
begin
set @a:= 1;
end|
ERROR HY000: Triggers can not be created on system tables
use mysql|
create trigger wont_work after update on event for each row
begin
set @a:= 1;
end|
ERROR HY000: Triggers can not be created on system tables
use test|
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;
CREATE TABLE t1(c INT);
CREATE TABLE t2(c INT);
CREATE DEFINER=longer_than_80_456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789@localhost
TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET @a = 1;
ERROR HY000: String 'longer_than_80_4567890123456789012345678901234567890123456789012345...' is too long for user name (should be no longer than 128)
CREATE DEFINER=some_user_name@1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYsome_user_name1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYsome_user_name1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYsome_user_name1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYsome_user_name1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYsome_user_name1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYsome_user_name1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYvvv234567890abcdefghijQWERTYvvvjdnkjfbewfjefnkejfnejfnERTYvvvjdnkjfbewfjefnkejfnejfn
TRIGGER t2_bi BEFORE INSERT ON t2 FOR EACH ROW SET @a = 2;
ERROR HY000: String '1234567890abcdefghij1234567890abcdefghij1234567890abcdefghijQWERTYs...' is too long for host name (should be no longer than 255)
DROP TABLE t1;
DROP TABLE t2;
drop table if exists t1;
drop table if exists t2;
drop table if exists t3;
drop table if exists t4;
SET @save_sql_mode=@@sql_mode;
SET sql_mode='TRADITIONAL'|
create table t1 (id int(10) not null primary key, v int(10) )|
create table t2 (id int(10) not null primary key, v int(10) )|
create table t3 (id int(10) not null primary key, v int(10) )|
create table t4 (c int)|
create trigger t4_bi before insert on t4 for each row set @t4_bi_called:=1|
create trigger t4_bu before update on t4 for each row set @t4_bu_called:=1|
insert into t1 values(10, 10)|
set @a:=1/0|
Warnings:
Warning	1365	Division by 0
select 1/0 from t1|
1/0
NULL
Warnings:
Warning	1365	Division by 0
create trigger t1_bi before insert on t1 for each row set @a:=1/0|
insert into t1 values(20, 20)|
drop trigger t1_bi|
create trigger t1_bi before insert on t1 for each row
begin
insert into t2 values (new.id, new.v);
update t2 set v=v+1 where id= new.id;
replace t3 values (new.id, 0);
update t2, t3 set t2.v=new.v, t3.v=new.v where t2.id=t3.id;
create temporary table t5 select * from t1;
delete from t5;
insert into t5 select * from t1;
insert into t4 values (0);
set @check= (select count(*) from t5);
update t4 set c= @check;
drop temporary table t5;
set @a:=1/0;
end|
set @check=0, @t4_bi_called=0, @t4_bu_called=0|
insert into t1 values(30, 30)|
select @check, @t4_bi_called, @t4_bu_called|
@check	@t4_bi_called	@t4_bu_called
2	1	1
SET @@sql_mode=@save_sql_mode;
drop table t1;
drop table t2;
drop table t3;
drop table t4;
drop table if exists t1;
create table t1 (i int, j int key);
insert into t1 values (1,1), (2,2), (3,3);
create trigger t1_bu before update on t1 for each row
set new.j = new.j + 10;
update t1 set i= i+ 10 where j > 2;
select * from t1;
i	j
1	1
2	2
13	13
drop table t1;
CREATE TABLE t1 (a INT PRIMARY KEY);
CREATE TABLE t2 (a INT PRIMARY KEY);
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8);
CREATE TRIGGER trg_t1 BEFORE DELETE on t1 FOR EACH ROW 
INSERT INTO t2 VALUES (OLD.a);
FLUSH STATUS;
TRUNCATE t1;
SHOW STATUS LIKE 'handler_delete';
Variable_name	Value
Handler_delete	0
SELECT COUNT(*) FROM t2;
COUNT(*)
0
INSERT INTO t1 VALUES (1),(2),(3),(4),(5),(6),(7),(8);
DELETE FROM t2;
FLUSH STATUS;
DELETE FROM t1;
SHOW STATUS LIKE 'handler_delete';
Variable_name	Value
Handler_delete	8
SELECT COUNT(*) FROM t2;
COUNT(*)
8
DROP TRIGGER trg_t1;
DROP TABLE t1,t2;
drop table if exists t1;
drop function if exists f1;
create table t1 (i int);
create function f1() returns int return 10;
create trigger t1_bi before insert on t1 for each row set @a:= f1() + 10;
insert into t1 values ();
select @a;
@a
20
connection addconroot1;
insert into t1 values ();
select @a;
@a
20
connection default;
drop table t1;
drop function f1;
drop table if exists t1;
create table t1(a int, b varchar(50));
drop trigger not_a_trigger;
ERROR HY000: Trigger does not exist
drop trigger if exists not_a_trigger;
Warnings:
Note	1360	Trigger does not exist
create trigger t1_bi before insert on t1
for each row set NEW.b := "In trigger t1_bi";
insert into t1 values (1, "a");
drop trigger if exists t1_bi;
insert into t1 values (2, "b");
drop trigger if exists t1_bi;
Warnings:
Note	1360	Trigger does not exist
insert into t1 values (3, "c");
select * from t1;
a	b
1	In trigger t1_bi
2	b
3	c
drop table t1;
CREATE TABLE t1 (
id int NOT NULL DEFAULT '0',
a  varchar(10) NOT NULL,
b  varchar(10),
c  varchar(10),
d  timestamp NOT NULL,
PRIMARY KEY (id, a)
);
CREATE TABLE t2 (
fubar_id         int unsigned NOT NULL DEFAULT '0',
last_change_time datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
PRIMARY KEY  (fubar_id)
);
CREATE TRIGGER fubar_change
AFTER UPDATE ON t1
FOR EACH ROW
BEGIN
INSERT INTO t2 (fubar_id, last_change_time)
SELECT DISTINCT NEW.id AS fubar_id, NOW() AS last_change_time
FROM t1 WHERE (id = NEW.id) AND (OLD.c != NEW.c)
ON DUPLICATE KEY UPDATE
last_change_time =
IF((fubar_id = NEW.id)AND(OLD.c != NEW.c),NOW(),last_change_time);
END
|
INSERT INTO t1 (id,a, b,c,d) VALUES
(1,'a','b','c',now()),(2,'a','b','c',now());
UPDATE t1 SET c='Bang!' WHERE id=1;
SELECT fubar_id FROM t2;
fubar_id
1
DROP TABLE t1,t2;
DROP TABLE IF EXISTS bug21825_A;
DROP TABLE IF EXISTS bug21825_B;
CREATE TABLE bug21825_A (id int(10));
CREATE TABLE bug21825_B (id int(10));
CREATE TRIGGER trgA AFTER INSERT ON bug21825_A
FOR EACH ROW
BEGIN
INSERT INTO bug21825_B (id) values (1);
END//
INSERT INTO bug21825_A (id) VALUES (10);
INSERT INTO bug21825_A (id) VALUES (20);
DROP TABLE bug21825_B;
DELETE FROM bug21825_A WHERE id = 20;
DROP TABLE bug21825_A;
DROP TABLE IF EXISTS bug22580_t1;
DROP PROCEDURE IF EXISTS bug22580_proc_1;
DROP PROCEDURE IF EXISTS bug22580_proc_2;
CREATE TABLE bug22580_t1 (a INT, b INT);
CREATE PROCEDURE bug22580_proc_2()
BEGIN
DROP TABLE IF EXISTS bug22580_tmp;
CREATE TEMPORARY TABLE bug22580_tmp (a INT);
DROP TABLE bug22580_tmp;
END||
CREATE PROCEDURE bug22580_proc_1()
BEGIN
CALL bug22580_proc_2();
END||
CREATE TRIGGER t1bu BEFORE UPDATE ON bug22580_t1
FOR EACH ROW 
BEGIN
CALL bug22580_proc_1();
END||
INSERT INTO bug22580_t1 VALUES (1,1);
DROP TABLE bug22580_t1;
DROP PROCEDURE bug22580_proc_1;
DROP PROCEDURE bug22580_proc_2;
DROP TRIGGER IF EXISTS trg27006_a_update;
DROP TRIGGER IF EXISTS trg27006_a_insert;
CREATE TABLE t1 (
`id` int(10) unsigned NOT NULL auto_increment,
`val` varchar(10) NOT NULL,
PRIMARY KEY  (`id`)
);
CREATE TABLE t2 like t1;
CREATE TRIGGER trg27006_a_insert AFTER INSERT ON t1 FOR EACH ROW
BEGIN
insert into t2 values (NULL,new.val);
END |
CREATE TRIGGER trg27006_a_update AFTER UPDATE ON t1 FOR EACH ROW
BEGIN
insert into t2 values (NULL,new.val);
END |
INSERT INTO t1(val) VALUES ('test1'),('test2');
SELECT * FROM t1;
id	val
1	test1
2	test2
SELECT * FROM t2;
id	val
1	test1
2	test2
INSERT INTO t1 VALUES (2,'test2') ON DUPLICATE KEY UPDATE val=VALUES(val);
INSERT INTO t1 VALUES (2,'test3') ON DUPLICATE KEY UPDATE val=VALUES(val);
INSERT INTO t1 VALUES (3,'test4') ON DUPLICATE KEY UPDATE val=VALUES(val);
SELECT * FROM t1;
id	val
1	test1
2	test3
3	test4
SELECT * FROM t2;
id	val
1	test1
2	test2
3	test2
4	test3
5	test4
DROP TRIGGER trg27006_a_insert;
DROP TRIGGER trg27006_a_update;
drop table t1,t2;
drop table if exists t1, t2, t3;
create table t1 (i int);
create trigger t1_bi before insert on t1 for each row set new.i = 7;
create trigger t1_ai after insert on t1 for each row set @a := 7;
create table t2 (j int);
insert into t2 values (1), (2);
set @a:="";
insert into t1 select * from t2;
select * from t1;
i
7
7
select @a;
@a
7
drop trigger t1_bi;
drop trigger t1_ai;
create table t3 (isave int);
create trigger t1_bi before insert on t1 for each row insert into t3 values (new.i);
insert into t1 select * from t2;
select * from t1;
i
7
7
1
2
select * from t3;
isave
1
2
drop table t1, t2, t3;
disconnect addconroot1;
disconnect addconroot2;
disconnect addconwithoutdb;

Bug#28502 Triggers that update another innodb table will block
on X lock unnecessarily

Ensure we do not open and lock tables for triggers we do not fire.

drop table if exists t1, t2;
drop trigger if exists trg_bug28502_au;
create table t1 (id int, count int);
create table t2 (id int);
create trigger trg_bug28502_au before update on t2
for each row
begin
if (new.id is not null) then
update t1 set count= count + 1 where id = old.id;
end if;
end|
insert into t1 (id, count) values (1, 0);
lock table t1 write;
connect  connection_insert, localhost, root, , test, , ;
connection connection_insert;
insert into t2 set id=1;
connection default;
unlock tables;
update t2 set id=1 where id=1;
select * from t1;
id	count
1	1
select * from t2;
id
1
drop table t1, t2;
disconnect connection_insert;

Additionally, provide test coverage for triggers and 
all MySQL data changing commands.

drop table if exists t1, t2, t1_op_log;
drop view if exists v1;
drop trigger if exists trg_bug28502_bi;
drop trigger if exists trg_bug28502_ai;
drop trigger if exists trg_bug28502_bu;
drop trigger if exists trg_bug28502_au;
drop trigger if exists trg_bug28502_bd;
drop trigger if exists trg_bug28502_ad;
create table t1 (id int primary key auto_increment, operation varchar(255));
create table t2 (id int primary key);
create table t1_op_log(operation varchar(255));
create view v1 as select * from t1;
create trigger trg_bug28502_bi before insert on t1
for each row
insert into t1_op_log (operation)
values (concat("Before INSERT, new=", new.operation));
create trigger trg_bug28502_ai after insert on t1
for each row
insert into t1_op_log (operation)
values (concat("After INSERT, new=", new.operation));
create trigger trg_bug28502_bu before update on t1
for each row
insert into t1_op_log (operation)
values (concat("Before UPDATE, new=", new.operation,
", old=", old.operation));
create trigger trg_bug28502_au after update on t1
for each row
insert into t1_op_log (operation)
values (concat("After UPDATE, new=", new.operation,
", old=", old.operation));
create trigger trg_bug28502_bd before delete on t1
for each row
insert into t1_op_log (operation)
values (concat("Before DELETE, old=", old.operation));
create trigger trg_bug28502_ad after delete on t1
for each row
insert into t1_op_log (operation)
values (concat("After DELETE, old=", old.operation));
insert into t1 (operation) values ("INSERT");
set @id=last_insert_id();
select * from t1;
id	operation
1	INSERT
select * from t1_op_log;
operation
Before INSERT, new=INSERT
After INSERT, new=INSERT
truncate t1_op_log;
update t1 set operation="UPDATE" where id=@id;
select * from t1;
id	operation
1	UPDATE
select * from t1_op_log;
operation
Before UPDATE, new=UPDATE, old=INSERT
After UPDATE, new=UPDATE, old=INSERT
truncate t1_op_log;
delete from t1 where id=@id;
select * from t1;
id	operation
select * from t1_op_log;
operation
Before DELETE, old=UPDATE
After DELETE, old=UPDATE
truncate t1;
truncate t1_op_log;
insert into t1 (id, operation) values
(NULL, "INSERT ON DUPLICATE KEY UPDATE, inserting a new key")
on duplicate key update id=NULL, operation="Should never happen";
set @id=last_insert_id();
select * from t1;
id	operation
1	INSERT ON DUPLICATE KEY UPDATE, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
After INSERT, new=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
truncate t1_op_log;
insert into t1 (id, operation) values
(@id, "INSERT ON DUPLICATE KEY UPDATE, the key value is the same")
on duplicate key update id=NULL,
operation="INSERT ON DUPLICATE KEY UPDATE, updating the duplicate";
select * from t1;
id	operation
0	INSERT ON DUPLICATE KEY UPDATE, updating the duplicate
select * from t1_op_log;
operation
Before INSERT, new=INSERT ON DUPLICATE KEY UPDATE, the key value is the same
Before UPDATE, new=INSERT ON DUPLICATE KEY UPDATE, updating the duplicate, old=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
After UPDATE, new=INSERT ON DUPLICATE KEY UPDATE, updating the duplicate, old=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
truncate t1;
truncate t1_op_log;
replace into t1 values (NULL, "REPLACE, inserting a new key");
set @id=last_insert_id();
select * from t1;
id	operation
1	REPLACE, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=REPLACE, inserting a new key
After INSERT, new=REPLACE, inserting a new key
truncate t1_op_log;
replace into t1 values (@id, "REPLACE, deleting the duplicate");
select * from t1;
id	operation
1	REPLACE, deleting the duplicate
select * from t1_op_log;
operation
Before INSERT, new=REPLACE, deleting the duplicate
Before DELETE, old=REPLACE, inserting a new key
After DELETE, old=REPLACE, inserting a new key
After INSERT, new=REPLACE, deleting the duplicate
truncate t1;
truncate t1_op_log;
insert into t1
select NULL, "CREATE TABLE ... SELECT, inserting a new key";
set @id=last_insert_id();
select * from t1;
id	operation
1	CREATE TABLE ... SELECT, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=CREATE TABLE ... SELECT, inserting a new key
After INSERT, new=CREATE TABLE ... SELECT, inserting a new key
truncate t1_op_log;
replace into t1
select @id, "CREATE TABLE ... REPLACE SELECT, deleting a duplicate key";
select * from t1;
id	operation
1	CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
select * from t1_op_log;
operation
Before INSERT, new=CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
Before DELETE, old=CREATE TABLE ... SELECT, inserting a new key
After DELETE, old=CREATE TABLE ... SELECT, inserting a new key
After INSERT, new=CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
truncate t1;
truncate t1_op_log;
insert into t1 (id, operation)
select NULL, "INSERT ... SELECT, inserting a new key";
set @id=last_insert_id();
select * from t1;
id	operation
1	INSERT ... SELECT, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=INSERT ... SELECT, inserting a new key
After INSERT, new=INSERT ... SELECT, inserting a new key
truncate t1_op_log;
insert into t1 (id, operation)
select @id,
"INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate"
on duplicate key update id=NULL,
operation="INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate";
select * from t1;
id	operation
0	INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate
select * from t1_op_log;
operation
Before INSERT, new=INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate
Before UPDATE, new=INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate, old=INSERT ... SELECT, inserting a new key
After UPDATE, new=INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate, old=INSERT ... SELECT, inserting a new key
truncate t1;
truncate t1_op_log;
replace into t1 (id, operation)
select NULL, "REPLACE ... SELECT, inserting a new key";
set @id=last_insert_id();
select * from t1;
id	operation
1	REPLACE ... SELECT, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=REPLACE ... SELECT, inserting a new key
After INSERT, new=REPLACE ... SELECT, inserting a new key
truncate t1_op_log;
replace into t1 (id, operation)
select @id, "REPLACE ... SELECT, deleting a duplicate";
select * from t1;
id	operation
1	REPLACE ... SELECT, deleting a duplicate
select * from t1_op_log;
operation
Before INSERT, new=REPLACE ... SELECT, deleting a duplicate
Before DELETE, old=REPLACE ... SELECT, inserting a new key
After DELETE, old=REPLACE ... SELECT, inserting a new key
After INSERT, new=REPLACE ... SELECT, deleting a duplicate
truncate t1;
truncate t1_op_log;
insert into t1 (id, operation) values (1, "INSERT for multi-DELETE");
insert into t2 (id) values (1);
delete t1.*, t2.* from t1, t2 where t1.id=1;
select * from t1;
id	operation
select * from t2;
id
select * from t1_op_log;
operation
Before INSERT, new=INSERT for multi-DELETE
After INSERT, new=INSERT for multi-DELETE
Before DELETE, old=INSERT for multi-DELETE
After DELETE, old=INSERT for multi-DELETE
truncate t1;
truncate t2;
truncate t1_op_log;
insert into t1 (id, operation) values (1, "INSERT for multi-UPDATE");
insert into t2 (id) values (1);
update t1, t2 set t1.id=2, operation="multi-UPDATE" where t1.id=1;
update t1, t2
set t2.id=3, operation="multi-UPDATE, SET for t2, but the trigger is fired" where t1.id=2;
select * from t1;
id	operation
2	multi-UPDATE, SET for t2, but the trigger is fired
select * from t2;
id
3
select * from t1_op_log;
operation
Before INSERT, new=INSERT for multi-UPDATE
After INSERT, new=INSERT for multi-UPDATE
Before UPDATE, new=multi-UPDATE, old=INSERT for multi-UPDATE
After UPDATE, new=multi-UPDATE, old=INSERT for multi-UPDATE
Before UPDATE, new=multi-UPDATE, SET for t2, but the trigger is fired, old=multi-UPDATE
After UPDATE, new=multi-UPDATE, SET for t2, but the trigger is fired, old=multi-UPDATE
truncate table t1;
truncate table t2;
truncate table t1_op_log;

Now do the same but use a view instead of the base table.

insert into v1 (operation) values ("INSERT");
set @id=last_insert_id();
select * from t1;
id	operation
1	INSERT
select * from t1_op_log;
operation
Before INSERT, new=INSERT
After INSERT, new=INSERT
truncate t1_op_log;
update v1 set operation="UPDATE" where id=@id;
select * from t1;
id	operation
1	UPDATE
select * from t1_op_log;
operation
Before UPDATE, new=UPDATE, old=INSERT
After UPDATE, new=UPDATE, old=INSERT
truncate t1_op_log;
delete from v1 where id=@id;
select * from t1;
id	operation
select * from t1_op_log;
operation
Before DELETE, old=UPDATE
After DELETE, old=UPDATE
truncate t1;
truncate t1_op_log;
insert into v1 (id, operation) values
(NULL, "INSERT ON DUPLICATE KEY UPDATE, inserting a new key")
on duplicate key update id=NULL, operation="Should never happen";
set @id=last_insert_id();
select * from t1;
id	operation
1	INSERT ON DUPLICATE KEY UPDATE, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
After INSERT, new=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
truncate t1_op_log;
insert into v1 (id, operation) values
(@id, "INSERT ON DUPLICATE KEY UPDATE, the key value is the same")
on duplicate key update id=NULL,
operation="INSERT ON DUPLICATE KEY UPDATE, updating the duplicate";
select * from t1;
id	operation
0	INSERT ON DUPLICATE KEY UPDATE, updating the duplicate
select * from t1_op_log;
operation
Before INSERT, new=INSERT ON DUPLICATE KEY UPDATE, the key value is the same
Before UPDATE, new=INSERT ON DUPLICATE KEY UPDATE, updating the duplicate, old=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
After UPDATE, new=INSERT ON DUPLICATE KEY UPDATE, updating the duplicate, old=INSERT ON DUPLICATE KEY UPDATE, inserting a new key
truncate t1;
truncate t1_op_log;
replace into v1 values (NULL, "REPLACE, inserting a new key");
set @id=last_insert_id();
select * from t1;
id	operation
1	REPLACE, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=REPLACE, inserting a new key
After INSERT, new=REPLACE, inserting a new key
truncate t1_op_log;
replace into v1 values (@id, "REPLACE, deleting the duplicate");
select * from t1;
id	operation
1	REPLACE, deleting the duplicate
select * from t1_op_log;
operation
Before INSERT, new=REPLACE, deleting the duplicate
Before DELETE, old=REPLACE, inserting a new key
After DELETE, old=REPLACE, inserting a new key
After INSERT, new=REPLACE, deleting the duplicate
truncate t1;
truncate t1_op_log;
insert into v1
select NULL, "CREATE TABLE ... SELECT, inserting a new key";
set @id=last_insert_id();
select * from t1;
id	operation
1	CREATE TABLE ... SELECT, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=CREATE TABLE ... SELECT, inserting a new key
After INSERT, new=CREATE TABLE ... SELECT, inserting a new key
truncate t1_op_log;
replace into v1
select @id, "CREATE TABLE ... REPLACE SELECT, deleting a duplicate key";
select * from t1;
id	operation
1	CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
select * from t1_op_log;
operation
Before INSERT, new=CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
Before DELETE, old=CREATE TABLE ... SELECT, inserting a new key
After DELETE, old=CREATE TABLE ... SELECT, inserting a new key
After INSERT, new=CREATE TABLE ... REPLACE SELECT, deleting a duplicate key
truncate t1;
truncate t1_op_log;
insert into v1 (id, operation)
select NULL, "INSERT ... SELECT, inserting a new key";
set @id=last_insert_id();
select * from t1;
id	operation
1	INSERT ... SELECT, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=INSERT ... SELECT, inserting a new key
After INSERT, new=INSERT ... SELECT, inserting a new key
truncate t1_op_log;
insert into v1 (id, operation)
select @id,
"INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate"
on duplicate key update id=NULL,
operation="INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate";
select * from t1;
id	operation
0	INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate
select * from t1_op_log;
operation
Before INSERT, new=INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate
Before UPDATE, new=INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate, old=INSERT ... SELECT, inserting a new key
After UPDATE, new=INSERT ... SELECT ... ON DUPLICATE KEY UPDATE, updating a duplicate, old=INSERT ... SELECT, inserting a new key
truncate t1;
truncate t1_op_log;
replace into v1 (id, operation)
select NULL, "REPLACE ... SELECT, inserting a new key";
set @id=last_insert_id();
select * from t1;
id	operation
1	REPLACE ... SELECT, inserting a new key
select * from t1_op_log;
operation
Before INSERT, new=REPLACE ... SELECT, inserting a new key
After INSERT, new=REPLACE ... SELECT, inserting a new key
truncate t1_op_log;
replace into v1 (id, operation)
select @id, "REPLACE ... SELECT, deleting a duplicate";
select * from t1;
id	operation
1	REPLACE ... SELECT, deleting a duplicate
select * from t1_op_log;
operation
Before INSERT, new=REPLACE ... SELECT, deleting a duplicate
Before DELETE, old=REPLACE ... SELECT, inserting a new key
After DELETE, old=REPLACE ... SELECT, inserting a new key
After INSERT, new=REPLACE ... SELECT, deleting a duplicate
truncate t1;
truncate t1_op_log;
insert into v1 (id, operation) values (1, "INSERT for multi-DELETE");
insert into t2 (id) values (1);
delete v1.*, t2.* from v1, t2 where v1.id=1;
select * from t1;
id	operation
select * from t2;
id
select * from t1_op_log;
operation
Before INSERT, new=INSERT for multi-DELETE
After INSERT, new=INSERT for multi-DELETE
Before DELETE, old=INSERT for multi-DELETE
After DELETE, old=INSERT for multi-DELETE
truncate t1;
truncate t2;
truncate t1_op_log;
insert into v1 (id, operation) values (1, "INSERT for multi-UPDATE");
insert into t2 (id) values (1);
update v1, t2 set v1.id=2, operation="multi-UPDATE" where v1.id=1;
update v1, t2
set t2.id=3, operation="multi-UPDATE, SET for t2, but the trigger is fired" where v1.id=2;
select * from t1;
id	operation
2	multi-UPDATE, SET for t2, but the trigger is fired
select * from t2;
id
3
select * from t1_op_log;
operation
Before INSERT, new=INSERT for multi-UPDATE
After INSERT, new=INSERT for multi-UPDATE
Before UPDATE, new=multi-UPDATE, old=INSERT for multi-UPDATE
After UPDATE, new=multi-UPDATE, old=INSERT for multi-UPDATE
Before UPDATE, new=multi-UPDATE, SET for t2, but the trigger is fired, old=multi-UPDATE
After UPDATE, new=multi-UPDATE, SET for t2, but the trigger is fired, old=multi-UPDATE
drop view v1;
drop table t1, t2, t1_op_log;

Bug#27248 Triggers: error if insert affects temporary table

The bug was fixed by the fix for Bug#26141

drop table if exists t1;
drop temporary table if exists t2;
create table t1 (s1 int);
create temporary table t2 (s1 int);
create trigger t1_bi before insert on t1 for each row insert into t2 values (0);
create trigger t1_bd before delete on t1 for each row delete from t2;
insert into t1 values (0);
insert into t1 values (0);
select * from t1;
s1
0
0
select * from t2;
s1
0
0
delete from t1;
select * from t1;
s1
select * from t2;
s1
drop table t1;
drop temporary table t2;
#------------------------------------------------------------------------
# Bug#39953 Triggers are not working properly with multi table updates
#------------------------------------------------------------------------
DROP TABLE IF EXISTS t1;
DROP TRIGGER IF EXISTS t_insert;
DROP TABLE IF EXISTS t2;
CREATE TABLE t1 (a int, date_insert timestamp, PRIMARY KEY (a));
INSERT INTO t1 (a) VALUES (2),(5);
CREATE TABLE t2 (a int, b int, PRIMARY KEY (a));
CREATE TRIGGER t_insert AFTER INSERT ON t2 FOR EACH ROW BEGIN UPDATE t1,t2 SET
date_insert=NOW() WHERE t1.a=t2.b AND t2.a=NEW.a; END |
INSERT INTO t2 (a,b) VALUES (1,2);
DROP TRIGGER t_insert;
CREATE TRIGGER t_insert AFTER INSERT ON t2 FOR EACH ROW BEGIN UPDATE t1,t2 SET
date_insert=NOW(),b=b+1 WHERE t1.a=t2.b AND t2.a=NEW.a; END |
INSERT INTO t2 (a,b) VALUES (3,5);
ERROR HY000: Can't update table 't2' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
DROP TABLE t1;
DROP TRIGGER t_insert;
DROP TABLE t2;
# End of 5.0 tests
drop table if exists table_25411_a;
drop table if exists table_25411_b;
create table table_25411_a(a int);
create table table_25411_b(b int);
create trigger trg_25411a_ai after insert on table_25411_a
for each row
insert into table_25411_b select new.*;
select * from table_25411_a;
a
insert into table_25411_a values (1);
ERROR 42S02: Unknown table 'test.new'
select * from table_25411_a;
a
1
drop table table_25411_a;
drop table table_25411_b;
DROP TRIGGER IF EXISTS trg;
SHOW CREATE TRIGGER trg;
ERROR HY000: Trigger does not exist
drop table if exists t1;
create table t1 (i int, j int);
create trigger t1_bi before insert on t1 for each row begin end;
create trigger t1_bi before insert on t1 for each row begin end;
ERROR HY000: Trigger 'test.t1_bi' already exists
create trigger t1_bi2 before insert on t1 for each row begin end;
drop trigger t1_bi;
drop trigger t1_bi2;
drop trigger t1_bi;
ERROR HY000: Trigger does not exist
lock tables t1 read;
create trigger t1_bi before insert on t1 for each row begin end;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
create trigger t1_bi before insert on t1 for each row begin end;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
drop trigger t1_bi;
ERROR HY000: Trigger does not exist
unlock tables;
create trigger t1_bi before insert on t1 for each row begin end;
lock tables t1 read;
create trigger t1_bi before insert on t1 for each row begin end;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
drop trigger t1_bi;
ERROR HY000: Table 't1' was locked with a READ lock and can't be updated
unlock tables;
drop trigger t1_bi;
lock tables t1 write;
create trigger b1_bi before insert on t1 for each row set new.i = new.i + 10;
insert into t1 values (10, 10);
drop trigger b1_bi;
insert into t1 values (10, 10);
select * from t1;
i	j
20	10
10	10
unlock tables;
drop table t1;
drop table if exists t1, t2;
drop trigger if exists trg1;
drop trigger if exists trg2;
create table t1 (a int);
create table t2 (b int);
create trigger trg1 after update on t1 for each row set @a= @a+1;
create trigger trg2 after update on t2 for each row set @b= @b+1;
insert into t1 values (1), (2), (3);
insert into t2 values (1), (2), (3);
set @a= 0;
set @b= 0;
update t1, t2 set t1.a= t1.a, t2.b= t2.b;
select @a, @b;
@a	@b
3	3
update t1, t2 set t1.a= t2.b, t2.b= t1.a;
select @a, @b;
@a	@b
6	6
update t1 set a= a;
select @a, @b;
@a	@b
9	6
update t2 set b= b;
select @a, @b;
@a	@b
9	9
update t1 set a= 1;
select @a, @b;
@a	@b
12	9
update t2 set b= 1;
select @a, @b;
@a	@b
12	12
drop trigger trg1;
drop trigger trg2;
drop table t1, t2;
CREATE TABLE t1 ( a INT, b INT );
CREATE TABLE t2 ( a INT AUTO_INCREMENT KEY, b INT );
INSERT INTO t1 (a) VALUES (1);
CREATE TRIGGER tr1
BEFORE INSERT ON t2
FOR EACH ROW 
BEGIN 
UPDATE a_nonextisting_table SET a = 1;
END//
CREATE TABLE IF NOT EXISTS t2 ( a INT, b INT ) SELECT a, b FROM t1;
Warnings:
Note	1050	Table 't2' already exists
SELECT * FROM t2;
a	b
DROP TABLE t1, t2;
#
# Bug#51650 crash with user variables and triggers
#
DROP TRIGGER IF EXISTS trg1;
DROP TABLE IF EXISTS t1, t2;
CREATE TABLE t1 (b VARCHAR(50) NOT NULL);
CREATE TABLE t2 (a VARCHAR(10) NOT NULL DEFAULT '');
CREATE TRIGGER trg1 AFTER INSERT ON t2
FOR EACH ROW BEGIN
SELECT 1 FROM t1 c WHERE
(@bug51650 IS NULL OR @bug51650 != c.b) AND c.b = NEW.a LIMIT 1 INTO @foo;
END//
SET @bug51650 = 1;
INSERT IGNORE INTO t2 VALUES();
INSERT IGNORE INTO t1 SET b = '777';
INSERT IGNORE INTO t2 SET a = '111';
SET @bug51650 = 1;
INSERT IGNORE INTO t2 SET a = '777';
DROP TRIGGER trg1;
DROP TABLE t1, t2;
CREATE TABLE t1 (id INT NOT NULL);
CREATE TABLE t2 (id INT NOT NULL);
INSERT t1 VALUES (1),(2),(3);
UPDATE IGNORE t1 SET id=NULL;
Warnings:
Warning	1048	Column 'id' cannot be null
Warning	1048	Column 'id' cannot be null
Warning	1048	Column 'id' cannot be null
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
INSERT INTO t2 VALUES (3);
UPDATE t1 SET id=NULL;
Warnings:
Warning	1048	Column 'id' cannot be null
Warning	1048	Column 'id' cannot be null
Warning	1048	Column 'id' cannot be null
DROP TRIGGER t1_bu;
DROP TABLE t1,t2;
#
# Bug#50755: Crash if stored routine def contains version comments
#
DROP DATABASE IF EXISTS db1;
DROP TRIGGER IF EXISTS trg1;
DROP TABLE IF EXISTS t1, t2;
CREATE DATABASE db1;
USE db1;
CREATE TABLE t1 (b INT);
CREATE TABLE t2 (a INT);
CREATE TRIGGER trg1 BEFORE INSERT ON t2 FOR EACH ROW INSERT/*!INTO*/t1 VALUES (1);
# Used to crash
SHOW TRIGGERS IN db1;
Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer	character_set_client	collation_connection	Database Collation
trg1	INSERT	t2	CREATE DEFINER=`root`@`localhost` TRIGGER trg1 BEFORE INSERT ON t2 FOR EACH ROW INSERTINTOt1 VALUES (1)	BEFORE	#	STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION		latin1	latin1_swedish_ci	latin1_swedish_ci
INSERT INTO t2 VALUES (1);
ERROR 42000: Trigger 'trg1' has an error in its body: 'You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'VALUES (1)' at line 1'
SELECT * FROM t1;
b
# Work around Bug#45235
DROP DATABASE db1;
USE test;
# End of 5.1 tests.
create table t1 (i int);
create table t2 (i int);
flush tables;
flush status;
CREATE DEFINER=`root`@`localhost` TRIGGER trg AFTER DELETE ON t1 FOR EACH ROW BEGIN DELETE FROM t2 WHERE t2.i = OLD.i; END //
insert into t1 values (1),(2);
insert into t2 values (1),(2);
delete from t1 where i=1;
show status like 'Opened_tables';
Variable_name	Value
Opened_tables	6
select * from t1;
i
2
select * from t2;
i
2
drop table t1,t2;
# End of 5.2 tests.
#
# Bug#34453 Can't change size of file (Errcode: 1224)
#
DROP TRIGGER IF EXISTS t1_bi;
DROP TRIGGER IF EXISTS t1_bd;
DROP TABLE IF EXISTS t1;
DROP TEMPORARY TABLE IF EXISTS t2;
CREATE TABLE t1 (s1 INT);
CREATE TEMPORARY TABLE t2 (s1 INT);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW INSERT INTO t2 VALUES (0);
CREATE TRIGGER t1_bd BEFORE DELETE ON t1 FOR EACH ROW DELETE FROM t2;
INSERT INTO t1 VALUES (0);
INSERT INTO t1 VALUES (0);
SELECT * FROM t1;
s1
0
0
SELECT * FROM t2;
s1
0
0
# Reported to give ERROR 14 (HY000): 
# Can't change size of file (Errcode: 1224)
# on Windows 
DELETE FROM t1;
DROP TABLE t1;
DROP TEMPORARY TABLE t2;
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
DROP TRIGGER IF EXISTS trg1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a INT);
CREATE TRIGGER trg1 BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
DECLARE a CHAR;
SELECT 'ab' INTO a;
SELECT 'ab' INTO a;
SELECT 'a' INTO a;
END|
INSERT INTO t1 VALUES (1);
DROP TRIGGER trg1;
DROP TABLE t1;
DROP TRIGGER IF EXISTS trg1;
DROP TRIGGER IF EXISTS trg2;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (a INT);
CREATE TRIGGER trg1 BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
DECLARE trg1 CHAR;
SELECT 'ab' INTO trg1;
END|
CREATE TRIGGER trg2 AFTER INSERT ON t1 FOR EACH ROW
BEGIN
DECLARE trg2 CHAR;
SELECT 'ab' INTO trg2;
END|
SET sql_mode = DEFAULT;
INSERT INTO t1 VALUES (0);
SELECT * FROM t1;
a
0
SHOW WARNINGS;
Level	Code	Message
INSERT INTO t1 VALUES (1),(2);
DROP TRIGGER trg1;
DROP TRIGGER trg2;
DROP TABLE t1;
#
# Bug #46747 "Crash in MDL_ticket::upgrade_shared_lock_to_exclusive
#             on TRIGGER + TEMP table".
#
drop trigger if exists t1_bi;
drop temporary table if exists t1;
drop table if exists t1;
create table t1 (i int);
create trigger t1_bi before insert on t1 for each row set @a:=1;
# Create temporary table which shadows base table with trigger.
create temporary table t1 (j int);
# Dropping of trigger should succeed.
drop trigger t1_bi;
select trigger_name from information_schema.triggers
where event_object_schema = 'test' and event_object_table = 't1';
trigger_name
# Clean-up.
drop temporary table t1;
drop table t1;
#
# Bug #12362125: SP INOUT HANDLING IS BROKEN FOR TEXT TYPE.
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1(c TEXT);
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW
BEGIN
DECLARE v TEXT;
SET v = 'aaa';
SET NEW.c = v;
END|
INSERT INTO t1 VALUES('qazwsxedc');
SELECT c FROM t1;
c
aaa
DROP TABLE t1;

# End of 5.5 tests.
#
# BUG #910083: materialized subquery in a trigger
#
SET @save_optimizer_switch=@@optimizer_switch;
SET optimizer_switch='materialization=on';
CREATE TABLE t1 (a int);
CREATE TABLE t2 (b int);
CREATE TRIGGER tr AFTER UPDATE ON t1 FOR EACH ROW
UPDATE t2 SET b = (SELECT COUNT(a) FROM t1);
INSERT INTO t1
VALUES (1),(2),(3),(4),(5),(6),(7),(8),(9);
INSERT INTO t2
VALUES (0),(0),(0),(0),(0),(0),(0),(0),(0);
UPDATE t1 SET a = 3;
connect con1,localhost,root,,;
SELECT COUNT(*) FROM t1;
COUNT(*)
9
disconnect con1;
connection default;
SELECT * FROM t2;
b
9
9
9
9
9
9
9
9
9
UPDATE t1 SET a = 2;
SELECT * FROM t2;
b
9
9
9
9
9
9
9
9
9
SET optimizer_switch=@save_optimizer_switch;
DROP TRIGGER tr;
DROP TABLE t1, t2;
# End of 5.3 tests.
set time_zone="+00:00";
SET TIMESTAMP=UNIX_TIMESTAMP('2001-01-01 10:20:30');
SET @@session.sql_mode = 'STRICT_ALL_TABLES,STRICT_TRANS_TABLES';
set @rpt=1;
CREATE TABLE t1 (c CHAR(1) NOT NULL);
CREATE TRIGGER t1_bi
BEFORE INSERT
ON t1
FOR EACH ROW
BEGIN
SET NEW.c = repeat(@rpt,@rpt);
set @rpt=@rpt+1;
END;
|
SET @@session.sql_mode = default;
INSERT INTO t1 VALUES ('a'),('b');
ERROR 22001: Data too long for column 'c' at row 0
show create trigger t1_bi;
Trigger	sql_mode	SQL Original Statement	character_set_client	collation_connection	Database Collation	Created
t1_bi	STRICT_TRANS_TABLES,STRICT_ALL_TABLES	CREATE DEFINER=`root`@`localhost` TRIGGER t1_bi
BEFORE INSERT
ON t1
FOR EACH ROW
BEGIN
SET NEW.c = repeat(@rpt,@rpt);
set @rpt=@rpt+1;
END	latin1	latin1_swedish_ci	latin1_swedish_ci	2001-01-01 10:20:30.00
DROP TRIGGER t1_bi;
DROP TABLE t1;
SET TIMESTAMP=DEFAULT;
set time_zone= @@global.time_zone;
#
# MDEV-13936: Server crashes in Time_and_counter_tracker::incr_loops
#
CREATE TABLE t1 (i INT);
CREATE VIEW v1 AS SELECT * FROM t1 WHERE RAND() > 0.5;
CREATE TABLE t2 (a int);
CREATE TABLE t3 (a int);
create trigger trg after insert on t2 for each row
INSERT INTO t3 SELECT MAX(i) FROM v1 UNION SELECT MAX(i) FROM v1;
drop table t1;
insert into t2 value (2);
ERROR 42S02: Table 'test.t1' doesn't exist
CREATE TABLE t1 (i INT);
insert into t2 value (2);
DROP VIEW v1;
DROP TABLE t1,t2,t3;
#
# MDEV-16093
# Assertion `global_status_var.global_memory_used == 0' failed or
# bytes lost after inserting into table with non-null blob and trigger
#
CREATE TABLE t1 (b BLOB NOT NULL);
CREATE TRIGGER tr BEFORE UPDATE ON t1 FOR EACH ROW BEGIN END;
INSERT INTO t1 VALUES ('foo');
DROP TABLE t1;
#
# End of 10.1 tests.
#
create table t1 (i int);
create trigger tr1 after insert on t1 for each row set @a=@a+1;
create trigger tr2 after insert on t1 for each row set @a=@a+1;
create trigger tr3 after insert on t1 for each row set @a=@a+1;
flush status;
show status like 'Executed_triggers';
Variable_name	Value
Executed_triggers	0
set @a=0;
insert into t1 values (1);
show status like 'Executed_triggers';
Variable_name	Value
Executed_triggers	3
select @a;
@a
3
drop table t1;
create table t1 (i int);
set time_zone="+0:00";
SET TIMESTAMP=UNIX_TIMESTAMP('2016-01-01 10:10:10.33');
select now(2);
now(2)
2016-01-01 10:10:10.33
create or replace trigger tr1 after insert on t1 for each row set @a=@a+1;
SET TIMESTAMP=UNIX_TIMESTAMP('2016-01-01 10:10:10.99');
select now(2);
now(2)
2016-01-01 10:10:10.99
create or replace trigger tr2 after insert on t1 for each row set @a=@a+1;
select now(2);
now(2)
2016-01-01 10:10:10.99
select trigger_name, action_order, created from information_schema.triggers 
where event_object_table = 't1' and trigger_schema='test';
trigger_name	action_order	created
tr1	1	2016-01-01 10:10:10.33
tr2	2	2016-01-01 10:10:10.99
drop table t1;
set time_zone= @@global.time_zone;
# MDEV-12992: Increasing memory consumption
with each invocation of trigger
#
CREATE TABLE t1 (a INT);
INSERT INTO t1 VALUES (1);
CREATE TABLE t2 (b INT);
CREATE TRIGGER tr 
AFTER UPDATE ON t1 FOR EACH ROW SELECT (SELECT b FROM t2) INTO @x;
# Running 20000 queries
DROP TABLE t1,t2;
#
# MDEV-19188 Server Crash When Using a Trigger With A Number of Virtual Columns on INSERT/UPDATE
#
CREATE TABLE t1 (
virt1 INT GENERATED ALWAYS AS (0) VIRTUAL,
virt2 INT GENERATED ALWAYS AS (0) VIRTUAL,
virt3 INT GENERATED ALWAYS AS (0) VIRTUAL,
virt4 INT GENERATED ALWAYS AS (0) VIRTUAL,
virt5 INT GENERATED ALWAYS AS (0) VIRTUAL,
virt6 INT GENERATED ALWAYS AS (0) VIRTUAL,
virt7 INT GENERATED ALWAYS AS (0) VIRTUAL,
virt8 INT GENERATED ALWAYS AS (0) VIRTUAL
);
INSERT INTO t1 () VALUES ();
CREATE TRIGGER t1_trigger BEFORE INSERT ON t1 FOR EACH ROW BEGIN END;
INSERT INTO t1 () VALUES ();
DROP TABLE t1;
#
# Bug#33141958 - THE FIRST ASAN UAF ISSUE OF MYSQL SERVER
#
create table t1 (a int);
create trigger tr1 after insert on t1 for each row alter table t1 tablespace s2;
ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger
drop table t1;
#
# End of 10.2 tests
#
#
# MDEV-12461 TYPE OF and ROW TYPE OF anchored data types
#
CREATE TABLE t1 (a INT, b INT, total INT);
CREATE TRIGGER tr1 BEFORE INSERT ON t1
FOR EACH ROW
BEGIN
DECLARE va TYPE OF t1.a DEFAULT NEW.a;
DECLARE vb TYPE OF t1.b DEFAULT NEW.b;
SET NEW.total:= va + vb;
END;
$$
INSERT INTO t1 (a,b) VALUES (10, 20);
SELECT * FROM t1;
a	b	total
10	20	30
DROP TABLE t1;
# End of 10.3 tests
#
# MDEV-32022 ERROR 1054 (42S22): Unknown column 'X' in 'NEW' in trigger
#
create table t1 (m set('sms') not null);
create table t2 (i int);
create table t3 (j int);
create trigger t1 after insert on t1 for each row insert ignore into t2 select t3.j from t3 join (select 'sms' as method) m on find_in_set(m.method, new.m);
insert into t1 values ('sms');
drop table t1, t2, t3;
# End of 10.5 tests
#
# Test dropping orphan .trn file
#
create table t1 (a int);
create trigger t1_trg before insert on t1 for each row
begin
if isnull(new.a) then
set new.a:= 1000;
end if;
end|
insert into t1 values (null);
select * from t1;
a
1000
drop table t1;
drop trigger t1_trg;
Warnings:
Error	1146	Table 'test.t1' doesn't exist
Warning	4181	Dropped orphan trigger 't1_trg', originally created for table: 't1'
create table t1 (a int);
drop trigger t1_trg;
Warnings:
Warning	4181	Dropped orphan trigger 't1_trg', originally created for table: 't1'
create trigger t1_trg_2 before insert on t1 for each row
begin
if isnull(new.a) then
set new.a:= 1000;
end if;
end|
drop trigger t1_trg;
Warnings:
Error	1360	Trigger does not exist
Warning	4181	Dropped orphan trigger 't1_trg', originally created for table: 't1'
drop trigger t1_trg_2;
drop table t1;
# End of 10.6 tests
