Question

I need help with this query…

SELECT FIRST_NAME, LAST_NAME, test.EMAIL 
      FROM test
INNER JOIN suppression ON suppression.EMAIL = test.EMAIL
AND NOT EXISTS (select * from suppression)

I would like all records from table “test” where table “suppression” does not contain like records.

Answer 1

use LEFT JOIN

SELECT  a.*
FROM    test a
        LEFT JOIN suppression 
            ON suppression.EMAIL = a.EMAIL
WHERE   suppression.EMAIL IS NULL

To fully gain knowledge about joins, kindly visit the link below:

• Visual Representation of SQL Joins