--disable_query_log
set @@session.explicit_defaults_for_timestamp=off;
--enable_query_log
# owner: yuchen.wyc
# owner group: SQL1
# Test of functions except

--disable_warnings
drop table if exists t1,t2,t3,t4;
--enable_warnings


create table t1(c1 int primary key, c2 int);
create table t2(c1 int primary key, c2 int);
create table t3(c1 int, c2 int primary key);
create table t4(c1 int primary key, c2 int);

insert into t1 values(1,1),(2,2),(3,3),(4,4),(5,5);
insert into t2 values(0,0),(2,2),(4,4),(6,6);
insert into t3 values(1,1),(3,3),(5,5),(7,7);
insert into t4 values(1,0),(2,0),(3,1),(4,1);

#all same
select * from t1 except select * from t1;
--error 1064
select * from t1 except all select * from t1;
#partial same 
select * from t1 except select * from t2;
--error 1064
select * from t1 except all select * from t2;

#different schema
select * from t1 except select * from t3;
--error 1064
select * from t1 except all select * from t3;

#constant
select * from t1 except select 1,1 from t1;
--error 1064
select * from t1 except all select 1,1 from t1;

#has no same
select * from t2 except select * from t3;
--error 1064
select * from t2 except all select * from t3;

#empty input
(select * from t2) except (select * from t2 where false);
--error 1064
(select * from t2) except all (select * from t2 where false);
(select * from t2 where false) except (select * from t2);
(select * from t2 where false) except (select * from t2 where false);

#distinct
select c2  from t4 except select 1 from t4;
--error 1064
select c2  from t4 except all select 1 from t4;
select c2  from t4 except select 0 from t4;
select c2  from t4 except select c2  from t4;
select c2  from t4 except select distinct c2  from t4;
select distinct c2  from t4 except select distinct c2  from t4;
--error 1064
select distinct c2  from t4 except all select distinct c2  from t4;
select distinct c2  from t4 except select c2  from t4;
--error 1064
select distinct c2  from t4 except all select c2  from t4;

select 0 from t4 except select c2 from t4;
select 1 from t4 except select 0 from t4;
--error 1064
select 1 from t4 except all select 0 from t4;


# nest
(select * from t4 except (select * from t4 where c1=1) )except (select * from t4 where c1=2);
select * from t4 except (select * from t4 where c1=1) except (select * from t4 where c1=3);
select * from t4 except select 1,0 from t4 except select 3,1 from t4;
(select * from t4 where false) except (select * from t4 where false) except select * from t4;

select * from t4 except ((select * from t4 where c1=1) except (select * from t4 where c1=2));
select * from t4 except ((select * from t4 where c1=1) union (select * from t4 where c1=2));
--disable_warnings
drop table if exists t5,t6;
--enable_warnings
create table t5(c1 int primary key, c2 int);
create table t6(c1 int primary key, c2 int);

insert into t5 values(1,1),(2,2),(3,3),(4,4),(5,5),(6,2),(7,3),(8,6);
insert into t6 values(0,0),(2,2),(4,4),(6,6);
select c2 from t5 except select c2 from t6;
--error 1064
select c2 from t5 except  all select c2 from t6;


drop table t1,t2,t3,t4,t5,t6;