SELECT (1,2,3)=(1,2,3);
SELECT (2,2,3)=(1+1,2,3);
SELECT (1,2,3)=(1+1,2,3);
SELECT (1,2,3)<(1+1,2,3);
SELECT (1,2,3)>(1+1,2,3);
SELECT (1,2,3)<=(1+1,2,3);
SELECT (1,2,3)>=(1+1,2,3);
SELECT (1,2,3)<>(1+1,2,3);
SELECT (1,2,(3,4,5))=(1,2,(3,4,5));
SELECT ('test',2,3.33)=('test',2,3.33);
-- error 1239
SELECT ('test',2,3.33)=('test',2,3.33,4);
drop table if exists t1;
create table t1 ( a int, b int, c int);
insert into t1 values (1,2,3), (2,3,1), (3,2,1);
select * from t1 where (1,2,3)=(a,b,c);
select * from t1 where (0,2,3)=(a,b,c);
select * from t1 where (1,2,3)<(a,b,c);
drop table t1;