[rawgabbit]

You can do this

SELECT B.* FROM tableB B LEFT JOIN tableA A ON A.key1= B.key1 and A.key2=B.key2 WHERE A.key1 IS NULL

Or use NOT EXISTS depending on the database you use.

https://dba.stackexchange.com/questions/121034/best-practice...

[murilogustineli]

That helps! Thank you!