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################################################################################
# inc/vcol_trigger_sp.inc #
# #
# Purpose: #
# Testing triggers, stored procedures and functions #
# defined on tables with virtual columns. #
# #
# #
# #
#------------------------------------------------------------------------------#
# Original Author: Andrey Zhakov #
# Original Date: 2008-09-04 #
# Change Author: Oleksandr Byelkin (Monty program Ab)
# Date: 2009-03-24
# Change: Syntax changed
################################################################################
create table t1 (a int,
b int as (a/10),
c int as (a/10) persistent);
create table t2 (a timestamp);
delimiter |;
create trigger trg1 before insert on t1 for each row
begin
if (new.b < 10) then
set new.a:= 100;
set new.b:= 9;
set new.c:= 9;
end if;
if (new.c > 50) then
set new.a:= 500;
end if;
end|
create trigger trg2 after insert on t1 for each row
begin
if (new.b >= 60) then
insert into t2 values (now());
end if;
end|
create function f1()
returns int
begin
declare sum1 int default '0';
declare cur1 cursor for select sum(b) from t1;
open cur1;
fetch cur1 into sum1;
close cur1;
return sum1;
end|
delimiter ;|
set sql_warnings = 1;
insert into t1 (a) values (200);
select * from t1;
select * from t2;
insert into t1 (a) values (10);
select * from t1;
select * from t2;
insert into t1 (a) values (600);
select * from t1;
--replace_column 1 <timestamp>
select * from t2;
select f1();
set sql_warnings = 0;
drop trigger trg1;
drop trigger trg2;
drop table t2;
delimiter |;
create procedure p1()
begin
declare i int default '0';
create table t2 like t1;
insert into t2 (a) values (100), (200);
begin
declare cur1 cursor for select sum(c) from t2;
open cur1;
fetch cur1 into i;
close cur1;
if (i=30) then
insert into t1 values (300,default,default);
end if;
end;
end|
delimiter ;|
delete from t1;
call p1();
select * from t2;
select * from t1;
drop table t1,t2;
drop procedure p1;
--echo #
--echo # MDEV-3845 values of virtual columns are not computed for triggers
--echo #
CREATE TABLE t1 (
a INTEGER UNSIGNED NULL DEFAULT NULL,
b INTEGER UNSIGNED GENERATED ALWAYS AS (a) VIRTUAL
);
CREATE TABLE t2 (c INTEGER UNSIGNED NOT NULL);
DELIMITER |;
CREATE TRIGGER t1_ins_aft
AFTER INSERT
ON t1
FOR EACH ROW
BEGIN
INSERT INTO t2 (c) VALUES (NEW.b);
END |
CREATE TRIGGER t1_del_bef
BEFORE DELETE
ON t1
FOR EACH ROW
BEGIN
INSERT INTO t2 (c) VALUES (OLD.b);
END |
DELIMITER ;|
INSERT INTO t1 (a) VALUES (1), (2), (3);
SELECT * FROM t2;
DELETE FROM t1;
SELECT * FROM t2;
DROP TRIGGER t1_ins_aft;
DROP TRIGGER t1_del_bef;
DROP TABLE t1,t2;
#
# MDEV-11706 Assertion `is_stat_field || !table || (!table->write_set || bitmap_is_set(table->write_set, field_index) || (table->vcol_set && bitmap_is_set(table->vcol_set, field_index)))' failed in Field_time::store_TIME_with_warning
#
create table t1 (i int, t time not null, vt time(4) as (t) virtual);
create trigger trg before update on t1 for each row set @a = 1;
insert ignore into t1 (i) values (1);
drop table t1;
--echo #
--echo # Examine the number of times triggers are recalculated for updates
--echo #
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
CREATE TABLE t1 (
a INTEGER UNSIGNED NULL DEFAULT NULL,
b CHAR(10) NULL DEFAULT NULL,
c blob NULL DEFAULT NULL,
blob_a blob GENERATED ALWAYS AS (last_value(@a:=@a+1,a)) VIRTUAL,
blob_b blob GENERATED ALWAYS AS (last_value(@b:=@b+1,b)) VIRTUAL,
blob_c blob GENERATED ALWAYS AS (last_value(@c:=@c+1,c)) VIRTUAL
);
DELIMITER |;
CREATE TRIGGER t1_ins
BEFORE INSERT
ON t1
FOR EACH ROW
BEGIN
IF NEW.b IS NULL THEN
SET NEW.b="generated before insert";
END IF;
END |
CREATE TRIGGER t1_update
BEFORE UPDATE
ON t1
FOR EACH ROW
BEGIN
IF NEW.b IS NULL or NEW.c IS NULL THEN
SET NEW.b="generated before update";
SET NEW.c="generated before update";
END IF;
END |
DELIMITER ;|
--echo # Inserts
set @a=0,@b=0,@c=0;
insert into t1 (a) values(1);
insert into t1 (a,b) values(2, "*2*");
insert into t1 (a,b,c) values(3, "*3*", "**3**");
insert into t1 (a,c) values(4, "**4**");
select * from t1;
select @a,@b,@c;
select * from t1;
select @a,@b,@c;
select a,b,c from t1;
select @a,@b,@c;
select a,b,c,blob_a from t1;
select @a,@b,@c;
--echo # updates
set @a=0,@b=0,@c=0;
update t1 set a=a+100 where a=1;
update t1 set a=a+100, b="*102*" where a=2;
update t1 set a=a+100, b=NULL where a=3;
update t1 set a=a+100, b="invisible", c=NULL where a=4;
select @a,@b,@c;
select * from t1;
drop trigger t1_ins;
drop trigger t1_update;
drop table t1;
SET sql_mode = DEFAULT;
--echo #
--echo # Same test, but with virtual keys
--echo #
SET sql_mode = 'NO_ENGINE_SUBSTITUTION';
CREATE TABLE t1 (
a INTEGER UNSIGNED NULL DEFAULT NULL,
b CHAR(10) NULL DEFAULT NULL,
c blob NULL DEFAULT NULL,
blob_a blob GENERATED ALWAYS AS (a) VIRTUAL,
blob_b blob GENERATED ALWAYS AS (b) VIRTUAL,
blob_c blob GENERATED ALWAYS AS (c) VIRTUAL,
key (a),
key (blob_a(10)),
key (blob_b(10)),
key (blob_c(10))
);
DELIMITER |;
CREATE TRIGGER t1_ins
BEFORE INSERT
ON t1
FOR EACH ROW
BEGIN
IF NEW.b IS NULL THEN
SET NEW.b="generated before insert";
END IF;
END |
CREATE TRIGGER t1_update
BEFORE UPDATE
ON t1
FOR EACH ROW
BEGIN
IF NEW.b IS NULL or NEW.c IS NULL THEN
SET NEW.b="generated before update";
SET NEW.c="generated before update";
END IF;
END |
DELIMITER ;|
--echo # Inserts
insert into t1 (a) values(1);
insert into t1 (a,b) values(2, "*2*");
insert into t1 (a,b,c) values(3, "*3*", "**3**");
insert into t1 (a,c) values(4, "**4**");
select * from t1;
select @a,@b,@c;
select * from t1;
select @a,@b,@c;
select a,b,c from t1;
select @a,@b,@c;
select a,b,c,blob_a from t1;
select @a,@b,@c;
--echo # updates
update t1 set a=a+100 where a=1;
update t1 set a=a+100, b="*102*" where a=2;
update t1 set a=a+100, b=NULL where a=3;
update t1 set a=a+100, b="invisible", c=NULL where a=4;
select * from t1;
drop trigger t1_ins;
drop trigger t1_update;
drop table t1;
SET sql_mode = DEFAULT;
|