Question

I have 2 fields in my table on which i need a case statement.

Col1          Col2     Col3
abc.txt       Y        0
def.txt       N        0
bbck.txt      Y        1

The Col3 values are based on the Col1 and Col2 values in the following manner.
Y = 1 and N = 0. So all the values in Col2 that are Y shall become 1 in col3, and Nin Col2 will become 0 in Col3, UNLESS the col1 value ends with %c.txt. As you can see since the abc.txt ends with %c.txt the value in col3 becomes 0.

I know this can be done with a CASE statement nested maybe to get this done. Does anyone know how to?

here’s my code

SELECT 
  CASE Col2
    WHEN 'Y' THEN '1'
    WHEN 'N' THEN '0'
  ELSE
(CASE WHEN [Col1] LIKE '%c.txt' THEN '0'
 END)
  END
  AS Col3,
 *
FROM Tabl1

Hope this gives an idea

Answer 1

Maybe:

SELECT 
    CASE 
      WHEN Col2 = 'N'
        OR Col1 LIKE '%c.txt'
          THEN '0'
      WHEN Col2 = 'Y'
          THEN '1'
    END AS Col3
  , * 
FROM Tabl1