f

(1 row)

select * from T_pkey1 order by key1, key2using @<;

select * from T_pkey1 order by key1using @<, key2;

key1 | key2 | txt

------+----------------------+------------------------------------------

1 | KEY1-3 | should work

1 | key1-1 | test key

1 | key1-2 | test key

1 | key1-3 | test key

1 | KEY1-3 | should work

2 | key2-3 | test key

2 | key2-9 | test key

(6 rows)

select * from T_pkey2 order by key1, key2using @<;

select * from T_pkey2 order by key1using @<, key2;

key1 | key2 | txt

------+----------------------+------------------------------------------

1 | KEY1-3 | test key

select1 @<2;

select100 @<4;

select*from T_pkey1order by key1, key2using @<;

select*from T_pkey2order by key1, key2using @<;

select*from T_pkey1order by key1using @<, key2;

select*from T_pkey2order by key1using @<, key2;