Question

This query gives me 2 rows but the result is presented a just 1 row. I dont understand why. I want the result as 2 rows.

 SELECT *
 FROM table AS S1
      INNER JOIN table AS S2
        ON S1.code = S2.code
 WHERE  S1.column1 IS NULL
   AND S2.column1 IS NOT NULL

Here is the ouptput that i am expecting:

EXPECTED OUTPUT:

ID    login    email         code    column1
--------------------------------------------
96    testid1  test-Email1   XPQR    NULL
97    testid1  test-Email1   XPQR    P    

Answer 1

Just a wild guess:

SELECT *
FROM table AS S1
WHERE EXISTS 
      ( SELECT *
        FROM table AS S2
        WHERE ( S2.code = S1.code )
          AND (  ( S1.column1 IS NULL  AND  S2.column1 IS NOT NULL ) 
              OR ( S2.column1 IS NULL  AND  S1.column1 IS NOT NULL )
              )
      ) ;