Question

This question seems really basic, but I cant find the answer by google, and I’ve spent the last hour testing with no luck. Im having difficulties trying to return a set of rows. I want the rows that equal 11, 1, or Null. I think it is Null that is messing me up. Below is just one of the many tests I ran…and I know it doesn’t work. Any help is REALLY appreciated. Thanks in advance

SELECT * FROM have
    WHERE have.flag = 11 || 1 || NULL;

Answer 1

You will need to treat NULL separately from 1 and 11, then just put the values into your where clause.

SELECT *
FROM have AS h
WHERE h.flag IS NULL
   OR h.flag IN (1, 11);