-- in两边元素个数必须相同 -- succss select * from tba where (fa, fb) in ( select fa, fb from tbb where fc=xxx order by fd -- fetch first 1 rows only );
-- in两边元素个数必须相同 -- succss select * from tba where (fa, fb) in ( select fa, fb from tbb where fc=xxx order by fd -- fetch first 1 rows only );