mariadb/mysql-test/t/trigger.test

#
# Basic triggers test
#

--disable_warnings
drop table if exists t1, t2, t3, t4;
drop view if exists v1;
drop database if exists mysqltest;
drop function if exists f1;
drop function if exists f2;
drop procedure if exists p1;
--enable_warnings

# Create additional connections used through test
connect (addconroot1, localhost, root,,);
connect (addconroot2, localhost, root,,);
# Connection without current database set
connect (addconwithoutdb, localhost, root,,*NO-ONE*);
connection default;

create table t1 (i int);

# let us test some very simple trigger
create trigger trg before insert on t1 for each row set @a:=1;
set @a:=0;
select @a;
insert into t1 values (1);
select @a;
drop trigger trg;

# let us test simple trigger reading some values 
create trigger trg before insert on t1 for each row set @a:=new.i;
insert into t1 values (123);
select @a;
drop trigger trg;

drop table t1;

# Let us test before insert trigger
# Such triggers can be used for setting complex default values
create table t1 (i int not null, j int);
delimiter |;
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|
drop trigger trg|
drop table t1|
delimiter ;|

# After insert trigger
# Useful for aggregating data
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;
drop trigger trg;
drop table t1;

# PS doesn't work with multi-row statements
--disable_ps_protocol
# Before update trigger
# (In future we will achieve this via proper error handling in triggers)
create table t1 (aid int not null primary key, balance int not null default 0);
insert into t1 values (1, 1000), (2,3000);
delimiter |;
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|
drop trigger trg|
drop table t1|
delimiter ;|
--enable_ps_protocol

# After update trigger
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;
drop trigger trg;
drop table t1;

# Before delete trigger
# This can be used for aggregation too :)
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;
drop trigger trg;
drop table t1;

# After delete trigger. 
# Just run out of imagination.
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;
drop trigger trg;
drop table t1;

# Several triggers on one table
create table t1 (i int, j int);

delimiter |;
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|
delimiter ;|
set @fired:="";
insert into t1 values (1,2),(2,3),(3,14);
select @fired;
select * from t1;
update t1 set j= 20;
select @fired;
select * from t1;

drop trigger trg1;
drop trigger trg2;
drop trigger trg3;
drop table t1;


# Let us test how triggers work for special forms of INSERT such as
# REPLACE and INSERT ... ON DUPLICATE KEY UPDATE
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,"))");
# Simple INSERT - both triggers should be called
set @log:= "";
insert into t1 values (1, 1);
select @log;
# INSERT IGNORE for already existing key - only before trigger should fire
set @log:= "";
insert ignore t1 values (1, 2);
select @log;
# INSERT ... ON DUPLICATE KEY UPDATE ...
set @log:= "";
insert into t1 (id, data) values (1, 3), (2, 2) on duplicate key update data= data + 1;
select @log;
# REPLACE (also test for bug#13479 "REPLACE activates UPDATE trigger,
#          not the DELETE and INSERT triggers")
# We define REPLACE as INSERT which DELETEs old rows which conflict with
# row being inserted. So for the first record in statement below we will
# call before insert trigger, then delete will be executed (and both delete
# triggers should fire). Finally after insert trigger will be called.
# For the second record we will just call both on insert triggers.
set @log:= "";
replace t1 values (1, 4), (3, 3);
select @log;
# Now we will drop ON DELETE triggers to test REPLACE which is internally
# executed via update
drop trigger t1_bd;
drop trigger t1_ad;
set @log:= "";
replace t1 values (1, 5);
select @log;

# This also drops associated triggers
drop table t1;


#
# Let us test triggers which access other tables.
#
# Trivial trigger which inserts data into another table
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;
select * from t2;
drop trigger t1_ai;
# Trigger which uses couple of tables (and partially emulates FK constraint)
delimiter |;
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|
delimiter ;|
insert into t3 values (1);
--error ER_BAD_NULL_ERROR
insert into t1 values (4, "four", 1), (5, "five", 2);
select * from t1;
select * from t2;
drop table t1, t2, t3;
# Trigger which invokes function
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);
delimiter |;
create trigger t1_bi before insert on t1 for each row
begin
  if new.id > f1() then
    set new.id:= f1();
  end if;
end|
delimiter ;|
insert into t1 values (1, "first");
insert into t1 values (f1(), "max");
select * from t1;
drop table t1, t2;
drop function f1;
# Trigger which forces invocation of another trigger
# (emulation of FK on delete cascade policy)
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;
drop table t1, t2, t3;
# Trigger which assigns value selected from table to field of row
# being inserted/updated.
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;
drop table t1, t2;

#
# Test of wrong column specifiers in triggers
#
create table t1 (i int);
create table t3 (i int);

--error ER_TRG_NO_SUCH_ROW_IN_TRG
create trigger trg before insert on t1 for each row set @a:= old.i;
--error ER_TRG_NO_SUCH_ROW_IN_TRG
create trigger trg before delete on t1 for each row set @a:= new.i;
--error ER_TRG_CANT_CHANGE_ROW
create trigger trg before update on t1 for each row set old.i:=1;
--error ER_TRG_NO_SUCH_ROW_IN_TRG
create trigger trg before delete on t1 for each row set new.i:=1;
--error ER_TRG_CANT_CHANGE_ROW
create trigger trg after update on t1 for each row set new.i:=1;
--error ER_BAD_FIELD_ERROR
create trigger trg before update on t1 for each row set new.j:=1;
--error ER_BAD_FIELD_ERROR
create trigger trg before update on t1 for each row set @a:=old.j;


#
# Let us test various trigger creation errors
# Also quickly test table namespace (bug#5892/6182)
#
--error ER_NO_SUCH_TABLE
create trigger trg before insert on t2 for each row set @a:=1;

create trigger trg before insert on t1 for each row set @a:=1;
--error ER_TRG_ALREADY_EXISTS
create trigger trg after insert on t1 for each row set @a:=1;
--error ER_NOT_SUPPORTED_YET
create trigger trg2 before insert on t1 for each row set @a:=1;
--error ER_TRG_ALREADY_EXISTS
create trigger trg before insert on t3 for each row set @a:=1;
create trigger trg2 before insert on t3 for each row set @a:=1;
drop trigger trg2;
drop trigger trg;

--error ER_TRG_DOES_NOT_EXIST
drop trigger trg;

create view v1 as select * from t1;
--error ER_WRONG_OBJECT
create trigger trg before insert on v1 for each row set @a:=1;
drop view v1;

drop table t1;
drop table t3;

create temporary table t1 (i int);
--error ER_TRG_ON_VIEW_OR_TEMP_TABLE
create trigger trg before insert on t1 for each row set @a:=1;
drop table t1;



#
# Tests for various trigger-related bugs
#

# Test for bug #5887 "Triggers with string literals cause errors".
# New .FRM parser was not handling escaped strings properly.
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;

#
# Test for bug #5890 "Triggers fail for DELETE without WHERE".
# If we are going to delete all rows in table but DELETE triggers exist
# we should perform row-by-row deletion instead of using optimized
# delete_all_rows() method.
#
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;
drop trigger trg1;
drop trigger trg2;
drop table t1;

# Test for bug #5859 "DROP TABLE does not drop triggers". Trigger should not
# magically reappear when we recreate dropped table.
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;
drop table t1;

# Test for bug #6559 "DROP DATABASE forgets to drop triggers". 
create database mysqltest;
use mysqltest;
create table t1 (i int);
create trigger trg1 before insert on t1 for each row set @a:= 1;
# This should succeed
drop database mysqltest;
use test;

# Test for bug #8791
# "Triggers: Allowed to create triggers on a subject table in a different DB". 
create database mysqltest;
create table mysqltest.t1 (i int);
--error ER_TRG_IN_WRONG_SCHEMA
create trigger trg1 before insert on mysqltest.t1 for each row set @a:= 1;
use mysqltest;
--error ER_TRG_IN_WRONG_SCHEMA
create trigger test.trg1 before insert on t1 for each row set @a:= 1;
drop database mysqltest;
use test;


# Test for bug #5860 "Multi-table UPDATE does not activate update triggers"
# We will also test how delete triggers wor for multi-table DELETE.
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:= "";
# Check that trigger works in case of update on the fly
update t1, t2 set j = j + 10 where t1.i = t2.i;
select @a, @b;
insert into t1 values (2, 13, 2);
insert into t2 values (2);
set @a:= 0, @b:= "";
# And now let us check that triggers work in case of multi-update which
# is done through temporary tables...
update t1, t2 set j = j + 15 where t1.i = t2.i and t1.k >= 2;
select @a, @b;
# Let us test delete triggers for multi-delete now.
# We create triggers for both tables because we want test how they
# work in both on-the-fly and via-temp-tables cases.
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;
# This also will drop triggers
drop table t1, t2;

# Test for bug #6812 "Triggers are not activated for INSERT ... SELECT".
# (We also check the fact that trigger modifies some field does not affect
#  value of next record inserted).
delimiter |;
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|
select @a|
# This also will drop triggers
drop table t1, t2|
delimiter ;|

# Test for bug #8755 "Trigger is not activated by LOAD DATA"
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:="";
# Test triggers with file with separators
load data infile '../std_data_ln/rpl_loaddata.dat' into table t1 (@a, i);
select *, @b from t1;
set @b:="";
# Test triggers with fixed size row file
load data infile '../std_data_ln/loaddata5.dat' into table t1 fields terminated by '' enclosed by '' (i, j);
select *, @b from t1;
# This also will drop triggers
drop table t1;

# Test for bug #5894 "Triggers with altered tables cause corrupt databases"
# Also tests basic error handling for various kinds of triggers.
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);
# We need at least 3 elements in t2 to test multi-update properly
insert into t2 values (1), (2), (3);
# Create and then break "after" triggers
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;
# We still should be able select data from tables.
select * from t1;
# The following statements changing t1 should fail, but still cause
# their main effect. This is because operation on the table row is
# executed before "after" trigger and its effect cannot be rolled back
# when whole statement fails, because t1 is MyISAM table.
--error ER_BAD_FIELD_ERROR
insert into t1 values (2, 1);
select * from t1;
--error ER_BAD_FIELD_ERROR
update t1 set k = 2 where i = 2;
select * from t1;
--error ER_BAD_FIELD_ERROR
delete from t1 where i = 2;
select * from t1;
# Should fail and insert only 1 row
--error ER_BAD_FIELD_ERROR
load data infile '../std_data_ln/loaddata5.dat' into table t1 fields terminated by '' enclosed by '' (i, k);
select * from t1;
--error ER_BAD_FIELD_ERROR
insert into t1 select 3, 3;
select * from t1;
# Multi-update working on the fly, again it will update only
# one row even if more matches
--error ER_BAD_FIELD_ERROR
update t1, t2 set k = k + 10 where t1.i = t2.i;
select * from t1;
# The same for multi-update via temp table
--error ER_BAD_FIELD_ERROR
update t1, t2 set k = k + 10 where t1.i = t2.i and k < 3;
select * from t1;
# Multi-delete on the fly
--error ER_BAD_FIELD_ERROR
delete t1, t2 from t1 straight_join t2 where t1.i = t2.i;
select * from t1;
# And via temporary storage
--error ER_BAD_FIELD_ERROR
delete t2, t1 from t2 straight_join t1 where t1.i = t2.i;
select * from t1;
# Prepare table for testing of REPLACE and INSERT ... ON DUPLICATE KEY UPDATE
alter table t1 add primary key (i);
--error ER_BAD_FIELD_ERROR
insert into t1 values (3, 4) on duplicate key update k= k + 10;
select * from t1;
# The following statement will delete old row and won't
# insert new one since after delete trigger will fail.
--error ER_BAD_FIELD_ERROR
replace into t1 values (3, 3);
select * from t1;
# Also drops all triggers
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 and then break "before" triggers
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;
# The following statements changing t1 should fail and should not
# cause any effect on table, since "before" trigger is executed 
# before operation on the table row.
--error ER_BAD_FIELD_ERROR
insert into t1 values (3, 3);
select * from t1;
--error ER_BAD_FIELD_ERROR
update t1 set i = 2;
select * from t1;
--error ER_BAD_FIELD_ERROR
delete from t1;
select * from t1;
--error ER_BAD_FIELD_ERROR
load data infile '../std_data_ln/loaddata5.dat' into table t1 fields terminated by '' enclosed by '' (i, k);
select * from t1;
--error ER_BAD_FIELD_ERROR
insert into t1 select 3, 3;
select * from t1;
# Both types of multi-update (on the fly and via temp table)
--error ER_BAD_FIELD_ERROR
update t1, t2 set k = k + 10 where t1.i = t2.i;
select * from t1;
--error ER_BAD_FIELD_ERROR
update t1, t2 set k = k + 10 where t1.i = t2.i and k < 2;
select * from t1;
# Both types of multi-delete
--error ER_BAD_FIELD_ERROR
delete t1, t2 from t1 straight_join t2 where t1.i = t2.i;
select * from t1;
--error ER_BAD_FIELD_ERROR
delete t2, t1 from t2 straight_join t1 where t1.i = t2.i;
select * from t1;
# Let us test REPLACE/INSERT ... ON DUPLICATE KEY UPDATE.
# To test properly code-paths different from those that are used
# in ordinary INSERT we need to drop "before insert" trigger.
alter table t1 add primary key (i);
drop trigger bi;
--error ER_BAD_FIELD_ERROR
insert into t1 values (2, 4) on duplicate key update k= k + 10;
select * from t1;
--error ER_BAD_FIELD_ERROR
replace into t1 values (2, 4);
select * from t1;
# Also drops all triggers
drop table t1, t2;

# Test for bug #5893 "Triggers with dropped functions cause crashes"
# Appropriate error should be reported instead of crash.
# Also test for bug #11889 "Server crashes when dropping trigger
# using stored routine".
--disable_warnings
drop function if exists bug5893;
--enable_warnings
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; 
--error ER_SP_DOES_NOT_EXIST
update t1 set col2 = 4;
# This should not crash server too.
drop trigger t1_bu;
drop table t1;

#
# storing and restoring parsing modes for triggers (BUG#5891)
#
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 with different sql_mode
create trigger t1_af after insert on t1 for each row set @a=10;
insert into t1 values (0);
select * from t1;
select @a;
--replace_column 6 #
show triggers;
drop table t1;
# check that rigger preserve sql_mode during execution
set sql_mode="traditional";
create table t1 (a date);
-- error 1292
insert into t1 values ('2004-01-00');
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;
set sql_mode=default;
show create table t1;
--replace_column 6 #
show triggers;
drop table t1;

# Test for bug #12280 "Triggers: crash if flush tables"
# FLUSH TABLES and FLUSH PRIVILEGES should be disallowed inside
# of functions and triggers.
create table t1 (id int);
--error ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG
create trigger t1_ai after insert on t1 for each row flush tables;
--error ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG
create trigger t1_ai after insert on t1 for each row flush privileges;
create procedure p1() flush tables;
create trigger t1_ai after insert on t1 for each row call p1();
--error ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG
insert into t1 values (0);
drop procedure p1;
create procedure p1() flush privileges;
--error ER_STMT_NOT_ALLOWED_IN_SF_OR_TRG
insert into t1 values (0);
drop procedure p1;
drop table t1;

# Test for bug #11973 "SELECT .. INTO var_name; in trigger cause
#                      crash on update"

create table t1 (id int, data int, username varchar(16));
insert into t1 (id, data) values (1, 0);
delimiter |;
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|
delimiter ;|
update t1 set data = 1;

connection addconroot1;
update t1 set data = 2;

connection default;
drop table t1;

#
# #11587 Trigger causes lost connection error
#

create table t1 (c1 int, c2 datetime);
delimiter |;
--error ER_SP_NO_RETSET
create trigger tr1 before insert on t1 for each row 
begin 
  set new.c2= '2004-04-01';
  select 'hello';
end|
delimiter ;|

insert into t1 (c1) values (1),(2),(3);
select * from t1;

--disable_warnings
drop procedure if exists bug11587;
--enable_warnings

delimiter |;
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|
delimiter ;|

--error ER_SP_NO_RETSET
insert into t1 (c1) values (4),(5),(6);
select * from t1;

drop procedure bug11587;
drop table t1;

# Test for bug #11896 "Partial locking in case of recursive trigger
# definitions". Recursion in triggers should not be allowed.
# We also should not allow to change tables which are used in
# statements invoking this trigger.
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);
# Allow SP resursion to be show that it has not influence here
set @SAVE_SP_RECURSION_LEVELS=@@max_sp_recursion_depth;
set @@max_sp_recursion_depth=100;
--error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
insert into t1 values (1);
set @@max_sp_recursion_depth=@SAVE_SP_RECURSION_LEVELS;
select * from t1;
select * from t2;
drop trigger t1_ai;
drop trigger t2_ai;
create trigger t1_bu before update on t1
  for each row insert into t1 values (2);
--error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
update t1 set f1= 10;
select * from t1;
drop trigger t1_bu;
create trigger t1_bu before update on t1
  for each row delete from t1 where f1=new.f1;
--error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
update t1 set f1= 10;
select * from t1;
drop trigger t1_bu;
# This should work tough
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;
drop trigger t1_bi;
drop tables t1, t2;

# Tests for bug #12704 "Server crashes during trigger execution".
# If we run DML statements and CREATE TRIGGER statements concurrently
# it may happen that trigger will be created while DML statement is
# waiting for table lock. In this case we have to reopen tables and
# recalculate prelocking set.
# Unfortunately these tests rely on the order in which tables are locked
# by statement so they are non determenistic and are disabled.
--disable_parsing
create table t1 (id int);
create table t2 (id int);
create table t3 (id int);
create function f1() returns int return (select max(id)+2 from t2);
create view v1 as select f1() as f;

# Let us check that we notice trigger at all
connection addconroot1;
lock tables t2 write;
connection default;
send insert into t1 values ((select max(id) from t2)), (2);
--sleep 1
connection addconroot2;
create trigger t1_trg before insert on t1 for each row set NEW.id:= 1;
connection addconroot1;
unlock tables;
connection default;
reap;
select * from t1;

# Check that we properly calculate new prelocking set
insert into t2 values (3);
connection addconroot1;
lock tables t2 write;
connection default;
send insert into t1 values ((select max(id) from t2)), (4);
--sleep 1
connection addconroot2;
drop trigger t1_trg;
create trigger t1_trg before insert on t1 for each row
  insert into t3 values (new.id);
connection addconroot1;
unlock tables;
connection default;
reap;
select * from t1;
select * from t3;

# We should be able to do this even if fancy views are involved
connection addconroot1;
lock tables t2 write;
connection default;
send insert into t1 values ((select max(f) from v1)), (6);
--sleep 1
connection addconroot2;
drop trigger t1_trg;
create trigger t1_trg before insert on t1 for each row
  insert into t3 values (new.id + 100);
connection addconroot1;
unlock tables;
connection default;
reap;
select * from t1;
select * from t3;

# This also should work for multi-update
# Let us drop trigger to demonstrate that prelocking set is really
# rebuilt
drop trigger t1_trg;
connection addconroot1;
lock tables t2 write;
connection default;
send update t1, t2 set t1.id=10 where t1.id=t2.id;
--sleep 1
connection addconroot2;
create trigger t1_trg before update on t1 for each row
  insert into t3 values (new.id);
connection addconroot1;
unlock tables;
connection default;
reap;
select * from t1;
select * from t3;

# And even for multi-update converted from ordinary update thanks to view
drop view v1;
drop trigger t1_trg;
create view v1 as select t1.id as id1 from t1, t2 where t1.id= t2.id;
insert into t2 values (10);
connection addconroot1;
lock tables t2 write;
connection default;
send update v1 set id1= 11;
--sleep 1
connection addconroot2;
create trigger t1_trg before update on t1 for each row
  insert into t3 values (new.id + 100);
connection addconroot1;
unlock tables;
connection default;
reap;
select * from t1;
select * from t3;

drop function f1;
drop view v1;
drop table t1, t2, t3;
--enable_parsing

#
# Test for bug #13399 "Crash when executing PS/SP which should activate
# trigger which is now dropped". See also test for similar bug for stored
# routines in sp-error.test (#12329).
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();
# Actually it is enough to do FLUSH TABLES instead of DROP TRIGGER
drop trigger t1_bi;
# Server should not crash on these two statements
execute stmt1;
call p1();
deallocate prepare stmt1;
drop procedure p1;

# Let us test more complex situation when we alter trigger in such way that
# it uses different set of tables (or simply add new trigger).
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();
# Altering trigger forcing it use different set of tables
drop trigger t1_bi;
create trigger t1_bi after insert on t1 for each row insert into t3 values (new.id);
# Until we implement proper mechanism for invalidation of PS/SP when table
# or SP's are changed these two statements will fail with 'Table ... was
# not locked' error (this mechanism should be based on the new TDC).
--error 1100 #ER_TABLE_NOT_LOCKED
execute stmt1;
--error 1100 #ER_TABLE_NOT_LOCKED
call p1();
deallocate prepare stmt1;
drop procedure p1;
drop table t1, t2, t3;

#
# BUG#13549 "Server crash with nested stored procedures".
# Server should not crash when during execution of stored procedure
# we have to parse trigger/function definition and this new trigger/
# function has more local variables declared than invoking stored
# procedure and last of these variables is used in argument of NOT
# operator.
#
create table t1 (a int);
DELIMITER //;
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//
DELIMITER ;//
CALL p1();
drop procedure p1;
drop table t1;

#
# Test for bug #14863 "Triggers: crash if create and there is no current
# database". We should not crash and give proper error when database for
# trigger or its table is not specified and there is no current database.
#
connection addconwithoutdb;
--error ER_NO_DB_ERROR
create trigger t1_bi before insert on test.t1 for each row set @a:=0;
--error ER_NO_DB_ERROR
create trigger test.t1_bi before insert on t1 for each row set @a:=0;
--error ER_NO_DB_ERROR
drop trigger t1_bi;
connection default;

#
# Tests for bug #13525 "Rename table does not keep info of triggers"
# and bug #17866 "Problem with renaming table with triggers with fully
# qualified subject table".
#
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;
select trigger_schema, trigger_name, event_object_schema,
       event_object_table, action_statement from information_schema.triggers
       where event_object_schema = 'test';
rename table t1 to t2;
# Trigger should work after rename
insert into t2 values (102);
select @a, @b;
select trigger_schema, trigger_name, event_object_schema,
       event_object_table, action_statement from information_schema.triggers
       where event_object_schema = 'test';
# Let us check that the same works for simple ALTER TABLE ... RENAME
alter table t2 rename to t3;
insert into t3 values (103);
select @a, @b;
select trigger_schema, trigger_name, event_object_schema,
       event_object_table, action_statement from information_schema.triggers
       where event_object_schema = 'test';
# And for more complex ALTER TABLE
alter table t3 rename to t4, add column val int default 0;
insert into t4 values (104, 1);
select @a, @b;
select trigger_schema, trigger_name, event_object_schema,
       event_object_table, action_statement from information_schema.triggers
       where event_object_schema = 'test';
# .TRN file should be updated with new table name
drop trigger t1_bi;
drop trigger t1_ai;
drop table t4;
# Rename between different databases if triggers exist should fail
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;
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';
--error ER_TRG_IN_WRONG_SCHEMA
rename table t1 to test.t2;
insert into t1 values (102);
select @a;
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';
# There should be no fantom .TRN files 
--error ER_TRG_DOES_NOT_EXIST
drop trigger test.t1_bi;
# Let us also check handling of this restriction in ALTER TABLE ... RENAME
--error ER_TRG_IN_WRONG_SCHEMA
alter table t1 rename to test.t1;
insert into t1 values (103);
select @a;
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';
# Again there should be no fantom .TRN files 
--error ER_TRG_DOES_NOT_EXIST
drop trigger test.t1_bi;
--error ER_TRG_IN_WRONG_SCHEMA
alter table t1 rename to test.t1, add column val int default 0;
insert into t1 values (104);
select @a;
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';
# Table definition should not change
show create table t1;
# And once again check for fantom .TRN files 
--error ER_TRG_DOES_NOT_EXIST
drop trigger test.t1_bi;
drop trigger t1_bi;
drop table t1;
drop database mysqltest;
use test;
# And now let us check that the properly handle rename if there is some
# error during it (that we rollback such renames completely).
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;
select trigger_schema, trigger_name, event_object_schema,
       event_object_table, action_statement from information_schema.triggers
       where event_object_schema = 'test';
# Trick which makes update of second .TRN file impossible
system echo dummy >$MYSQLTEST_VARDIR/master-data/test/t1_ai.TRN~;
system chmod 000 $MYSQLTEST_VARDIR/master-data/test/t1_ai.TRN~;
--error 1
rename table t1 to t2;
# 't1' should be still there and triggers should work correctly
insert into t1 values (102);
select @a, @b;
select trigger_schema, trigger_name, event_object_schema,
       event_object_table, action_statement from information_schema.triggers
       where event_object_schema = 'test';
system chmod 600 $MYSQLTEST_VARDIR/master-data/test/t1_ai.TRN~;
system rm $MYSQLTEST_VARDIR/master-data/test/t1_ai.TRN~;
# Let us check that updates to .TRN files were rolled back too
drop trigger t1_bi;
drop trigger t1_ai;
drop table t1;

# Test for bug #16829 "Firing trigger with RETURN crashes the server"
# RETURN is not supposed to be used anywhere except functions, so error
# should be returned when one attempts to create trigger with RETURN.
create table t1 (i int);
--error ER_SP_BADRETURN
create trigger t1_bi before insert on t1 for each row return 0;
insert into t1 values (1);
drop table t1;

# Test for bug #17764 "Trigger crashes MyISAM table"
#
# Table was reported as crashed when it was subject table of trigger invoked
# by insert statement which was executed with enabled bulk insert mode (which
# is actually set of optimizations enabled by handler::start_bulk_insert())
# and this trigger also explicitly referenced it.
# The same problem arose when table to which bulk insert was done was also
# referenced in function called by insert statement.
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_ln/words.dat' into table t1 (a);
drop trigger t1_ai;
drop trigger t2_ai;
# Test that the problem for functions is fixed as well
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_ln/words.dat' into table t1 (a) set b:= f1();
drop function f1;
drop function f2;
drop table t1, t2;

#
# Test for bug #16021 "Wrong index given to function in trigger" which
# was caused by the same bulk insert optimization as bug #17764 but had
# slightly different symptoms (instead of reporting table as crashed
# storage engine reported error number 124)
#
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));
delimiter |;
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|
delimiter ;|
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;
select * from t2;
drop tables t1, t2;

#
# Test for Bug #16461 connection_id() does not work properly inside trigger
#
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

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;

DROP TRIGGER t1_bi;
DROP TABLE t1;


#
# Bug#6951: Triggers/Traditional: SET @ result wrong
#
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

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;

SET @x=2;
--error ER_DIVISION_BY_ZERO
UPDATE t1 SET i1 = @x;
SELECT @x;

SET SQL_MODE='';

SET @x=3;
INSERT INTO t1 VALUES (@x);
SELECT @x;

SET @x=4;
--error ER_DIVISION_BY_ZERO
UPDATE t1 SET i1 = @x;
SELECT @x;

SET @@sql_mode=@save_sql_mode;

DROP TRIGGER t1_ai;
DROP TRIGGER t1_au;
DROP TABLE t1;


#
# Test for bug #14635 Accept NEW.x as INOUT parameters to stored
# procedures from within triggers
#
--disable_warnings
DROP TABLE IF EXISTS t1;
DROP PROCEDURE IF EXISTS p1;
DROP PROCEDURE IF EXISTS p2;
--enable_warnings

CREATE TABLE t1 (i1 INT);

# Check that NEW.x pseudo variable is accepted as INOUT and OUT
# parameter to stored routine.
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;
delimiter //;
CREATE TRIGGER t1_bu BEFORE UPDATE ON t1 FOR EACH ROW
BEGIN
  CALL p1(NEW.i1);
  CALL p2(NEW.i1);
END//
delimiter ;//
UPDATE t1 SET i1 = 11 WHERE i1 = 3;
DROP TRIGGER t1_bu;
DROP PROCEDURE p2;
DROP PROCEDURE p1;

# Check that OLD.x pseudo variable is not accepted as INOUT and OUT
# parameter to stored routine.
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);
--error ER_SP_NOT_VAR_ARG
UPDATE t1 SET i1 = 19 WHERE i1 = 13;
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);
--error ER_SP_NOT_VAR_ARG
UPDATE t1 SET i1 = 31 WHERE i1 = 23;
DROP TRIGGER t1_bu;
DROP PROCEDURE p1;

# Check that NEW.x pseudo variable is read-only in the AFTER TRIGGER.
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);
--error ER_SP_NOT_VAR_ARG
UPDATE t1 SET i1 = 43 WHERE i1 = 37;
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);
--error ER_SP_NOT_VAR_ARG
UPDATE t1 SET i1 = 51 WHERE i1 = 47;
DROP TRIGGER t1_au;
DROP PROCEDURE p1;

# Post requisite.
SELECT * FROM t1;

DROP TABLE t1;

#
# Bug #18005: Creating a trigger on mysql.event leads to server crash on
# scheduler startup
#
# Bug #18361: Triggers on mysql.user table cause server crash
#
# We don't allow triggers on the mysql schema
delimiter |;
--error ER_NO_TRIGGERS_ON_SYSTEM_SCHEMA
create trigger wont_work after update on mysql.user for each row
begin
 set @a:= 1;
end|
# Try when we're already using the mysql schema
use mysql|
--error ER_NO_TRIGGERS_ON_SYSTEM_SCHEMA
create trigger wont_work after update on event for each row
begin
 set @a:= 1;
end|
delimiter ;|

--echo End of 5.0 tests