Question

Ok.. I have 2 tables: test_scores and test_exemptions.

I need Select the test_scoreid to show only the test items that are NOT exempted.

Relevant Fields:

test_scores

test_scoreid    test_score_sid    test_score_testitemid

exemptions

testexemptionid    exemption_sid    exemption_testitemid

Any help is greatly appreciated as this has been driving me nuts.

Answer 1

I assume that two tables are joined with fields test_score_testitemid and exemption_testitemid.
Try this:

SELECT ts.test_scoreid, te.testexemptionid
FROM test_scores ts LEFT JOIN exemptions te
ON ts.test_score_testitemid = te.exemption_testitemid
WHERE te.testexemptionid IS NULL

or

SELECT ts.test_scoreid
FROM test_scores ts
WHERE ts.test_score_testitemid NOT IN
(SELECT DISTINCT exemption_testitemid FROM exemptions)