#
# test of IN (NULL)
#

select 1 in (1,2,3);
select 10 in (1,2,3);
select NULL in (1,2,3);
select 1 in (1,NULL,3);
select 3 in (1,NULL,3);
select 10 in (1,NULL,3);
select 1.5 in (1.5,2.5,3.5);
select 10.5 in (1.5,2.5,3.5);
select NULL in (1.5,2.5,3.5);
select 1.5 in (1.5,NULL,3.5);
select 3.5 in (1.5,NULL,3.5);
select 10.5 in (1.5,NULL,3.5);
drop table if exists t1;
CREATE TABLE t1 (a int, b int, c int);
insert into t1 values (1,2,3), (1,NULL,3);
select 1 in (a,b,c) from t1;
select 3 in (a,b,c) from t1;
select 10 in (a,b,c) from t1;
select NULL in (a,b,c) from t1;
drop table t1;
CREATE TABLE t1 (a float, b float, c float);
insert into t1 values (1.5,2.5,3.5), (1.5,NULL,3.5);
select 1.5 in (a,b,c) from t1;
select 3.5 in (a,b,c) from t1;
select 10.5 in (a,b,c) from t1;
drop table t1;
CREATE TABLE t1 (a varchar(10), b varchar(10), c varchar(10));
insert into t1 values ('A','BC','EFD'), ('A',NULL,'EFD');
select 'A' in (a,b,c) from t1;
select 'EFD' in (a,b,c) from t1;
select 'XSFGGHF' in (a,b,c) from t1;
drop table t1;

CREATE TABLE t1 (field char(1));
INSERT INTO t1 VALUES ('A'),(NULL);
SELECT * from t1 WHERE field IN (NULL);
SELECT * from t1 WHERE field NOT IN (NULL);
SELECT * from t1 where field = field;
SELECT * from t1 where field <=> field;
DELETE FROM t1 WHERE field NOT IN (NULL);
SELECT * FROM t1;
drop table t1;

create table t1 (id int(10) primary key);
insert into t1 values (1),(2),(3),(4),(5),(6),(7),(8),(9);
select * from t1 where id in (2,5,9);
drop table t1;