--disable_query_log
set @@session.explicit_defaults_for_timestamp=off;
--enable_query_log
#### owner: yuchen.wyc
#### owner group: sql3
#### description: 用于测试NULL上的索引相关
--disable_warnings
drop table if exists t1;
--enable_warnings

CREATE TABLE t1
(
  pk1 INT primary key,
  key1 INT,
  key2 VARCHAR(20),
  key3 VARCHAR(20)
);

insert into t1 values(1,12,'a','a1'),(2,11,'a','b1'),(3,10,'b','b1'),(4,9,'c','c1'),
(5,8,NULL,'d1'),(6,7,NULL,'b1'),(7,6,NULL,'b1'),
(8,5,'a',NULL),(9,4,'a',NULL),(10,3,NULL,NULL),
(11,2,'',NULL),(12,1,NULL,'');

create index i1 on t1(key2,key3);

let $index_name=__idx_3003_i1;
--source mysql_test/include/check_all_idx_ok.inc

##
select * from t1 where key2='a' and key3=NULL;
select pk1 from t1 where key2='a' and key3=NULL;

##
select * from t1 where key2='a' and key3>NULL;
select pk1 from t1 where key2='a' and key3>NULL;

##
select * from t1 where key2='a' and key3<NULL;
select pk1 from t1 where key2='a' and key3<NULL;

##
select * from t1 where key2='a' and key3>=NULL;
select pk1 from t1 where key2='a' and key3>=NULL;

##
select * from t1 where key2='a' and key3<=NULL;
select pk1 from t1 where key2='a' and key3<=NULL;

##
select * from t1 where key2=NULL and key3='b1';
select pk1 from t1 where key2=NULL and key3='b1';

##
select * from t1 where key2>NULL and key3='b1';
select pk1 from t1 where key2>NULL and key3='b1';

##
select * from t1 where key2<NULL and key3='b1';
select pk1 from t1 where key2<NULL and key3='b1';

##
select * from t1 where key2>=NULL and key3='b1';
select pk1 from t1 where key2>=NULL and key3='b1';

##
select * from t1 where key2<=NULL and key3='b1';
select pk1 from t1 where key2<=NULL and key3='b1';

##
select * from t1 where key2=NULL and key3=NULL;
select pk1 from t1 where key2=NULL and key3=NULL;

##
select * from t1 where key2=NULL and key3<NULL;
select pk1 from t1 where key2=NULL and key3<NULL;

##
select * from t1 where key2=NULL and key3>NULL;
select pk1 from t1 where key2=NULL and key3>NULL;

##
select * from t1 where key2=NULL and key3<=NULL;
select pk1 from t1 where key2=NULL and key3<=NULL;

##
select * from t1 where key2=NULL and key3>=NULL;
select pk1 from t1 where key2=NULL and key3>=NULL;