Prevent Oracle minus statement from removing duplicates

Question

Given these two tables:

CREATE TABLE TEST1 (TEST  VARCHAR2(1 BYTE))
CREATE TABLE TEST2 (TEST  VARCHAR2(1 BYTE))

Where TEST1 has two rows both w

Answer 1

Part of what minus does is removes duplicates. Consider using NOT IN to avoid removing duplicates.

SELECT TEST FROM TEST1 WHERE TEST NOT IN(SELECT TEST FROM TEST2)