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niyuhang
2023-11-15 11:44:43 +00:00
committed by ob-robot
parent 4900683cff
commit c8ace58297
685 changed files with 1080566 additions and 111051 deletions
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62
tools/deploy/mysql_test/t/safe_null_test.test Normal file
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--disable_query_log
set @@session.explicit_defaults_for_timestamp=off;
--enable_query_log
#owner: link.zt
#owner group: sql1
--disable_warnings
set @@recyclebin = off;
drop table if exists t1,t2,t3,t4;
--enable_warnings
create table t1(pk1 int, pk2 int, pk3 int, extra int, d int primary key);
insert into t1(pk1,pk2,pk3,d) values(1,1,1,1),(2,2,2,2);
select * from t1;
insert into t1 values(3,null,null,NULL,3),(null,null,null,null,4);
select * from t1;
select * from t1 where extra = NULL;
select * from t1 where extra != NULL;
select * from t1 where extra <=> null;
select * from t1 where extra is not NULL;
select * from t1 where pk1 <=> null and pk2 <=> null and pk3 <=> null;
select * from t1 where pk1 = NULL and pk3 = NULL and pk3 = NULL;
select * from t1 where pk1 != NULL and pk2 != NULL and pk3 != NULL;
select * from t1 where pk1 is not NULL and pk2 is not NULL and pk3 is not NULL;
select * from t1 where pk1 in (NULL) and pk2 in (NULL) and pk3 in (NULL);
select * from t1 where pk1 in (NULL,1) and pk2 in (NULL, 1);
update t1 set extra=4 where pk1 = NULL and pk2 = NULL and pk3 = NULL;
select * from t1;
update t1 set extra=1 where pk1 <=> null;
select * from t1;
update t1 set extra=2 where pk1 <=> null and pk2 <=> null and pk3 <=> null;
select * from t1;
update t1 set extra=3 where pk1 is not NULL;
select * from t1;
update t1 set extra=4 where pk1 is not NULL and pk2 is not NULL and pk3 is not NULL;
select * from t1;
update t1 set extra=5 where pk1 != NULL;
select * from t1;
update t1 set extra=6 where pk1 != NULL and pk2 != NULL and pk3 != NULL;
select * from t1;
delete from t1 where pk1 != NULL;
select * from t1;
delete from t1 where pk1 != NULL and pk2 != NULL and pk3 != NULL;
select * from t1;
delete from t1 where pk1 = NULL and pk2 = NULL and pk3 = NULL;
select * from t1;
delete from t1 where pk1 <=> null;
select * from t1;
delete from t1 where pk1 <=> null and pk2 <=> null and pk3 <=> null;
select * from t1;
delete from t1 where pk1 is not NULL and pk2 is not NULL and pk3 is not NULL;
select * from t1;
delete from t1 where pk1 is not NULL;
select * from t1;
set @@recyclebin = off;
drop table t1;