mirror of
https://github.com/MariaDB/server.git
synced 2025-01-20 05:52:27 +01:00
71 lines
2.1 KiB
Text
71 lines
2.1 KiB
Text
#
|
|
# Check of check constraints
|
|
|
|
set @save_check_constraint=@@check_constraint_checks;
|
|
|
|
create table t1 (a int check(a>10), b int check (b > 20), constraint `min` check (a+b > 100), constraint `max` check (a+b <500)) engine=myisam;
|
|
show create table t1;
|
|
insert into t1 values (100,100);
|
|
--error ER_CONSTRAINT_FAILED
|
|
insert into t1 values (1,1);
|
|
--error ER_CONSTRAINT_FAILED
|
|
insert into t1 values (20,1);
|
|
--error ER_CONSTRAINT_FAILED
|
|
insert into t1 values (20,30);
|
|
--error ER_CONSTRAINT_FAILED
|
|
insert into t1 values (500,500);
|
|
|
|
--error ER_CONSTRAINT_FAILED
|
|
insert into t1 values (101,101),(102,102),(600,600),(103,103);
|
|
select * from t1;
|
|
truncate table t1;
|
|
insert ignore into t1 values (101,101),(102,102),(600,600),(103,103);
|
|
select * from t1;
|
|
set check_constraint_checks=0;
|
|
truncate table t1;
|
|
insert into t1 values (101,101),(102,102),(600,600),(103,103);
|
|
select * from t1;
|
|
set check_constraint_checks=@save_check_constraint;
|
|
|
|
--replace_regex /failed for.*/failed for table/
|
|
--error ER_CONSTRAINT_FAILED
|
|
alter table t1 add c int default 0 check (c < 10);
|
|
|
|
set check_constraint_checks=0;
|
|
alter table t1 add c int default 0 check (c < 10);
|
|
alter table t1 add check (a+b+c < 500);
|
|
set check_constraint_checks=@save_check_constraint;
|
|
|
|
show create table t1;
|
|
--error ER_CONSTRAINT_FAILED
|
|
insert into t1 values(105,105,105);
|
|
--error ER_CONSTRAINT_FAILED
|
|
insert into t1 values(249,249,9);
|
|
insert into t1 values(105,105,9);
|
|
select * from t1;
|
|
|
|
create table t2 like t1;
|
|
show create table t2;
|
|
--error ER_CANT_DROP_FIELD_OR_KEY
|
|
alter table t2 drop constraint c;
|
|
alter table t2 drop constraint if exists c;
|
|
alter table t2 drop constraint min;
|
|
show create table t2;
|
|
|
|
drop table t1,t2;
|
|
|
|
#
|
|
# check constraint name auto-generation:
|
|
#
|
|
create or replace table t1 (a int, b int, constraint check (a>b));
|
|
show create table t1;
|
|
create or replace table t1 (a int, b int,
|
|
constraint CONSTRAINT_1 check (a>1),
|
|
constraint check (b>1));
|
|
show create table t1;
|
|
create or replace table t1 (a int, b int,
|
|
constraint CONSTRAINT_1 check (a>1),
|
|
constraint check (b>1),
|
|
constraint CONSTRAINT_2 check (a>b));
|
|
show create table t1;
|
|
drop table t1;
|