Question

The code below works fine.

 (SELECT        (CASE 
  WHEN (PA.ACTOR_KIND = 5) THEN
     (SELECT   POP.KDS_TEKLIF_TUT_TL) 
      ELSE 0 END) AS Expr1) AS YKF_CUSTOMER_LIMIT

However,when I add another "when" condition it gives error.

 (SELECT        (CASE 
  WHEN (PA.ACTOR_KIND = 5) THEN
     (SELECT   POP.KDS_TEKLIF_TUT_TL)
  WHEN (PA.ACTOR_KIND = 10) THEN
     (SELECT   POP.KDS_ALICI_LIM_TL) 
      ELSE 0 END) AS Expr1) AS YKF_CUSTOMER_LIMIT

It seems all logical to me but not for sql

**Edit It was caused by typo error,there is nothing wrong with those statements.

Answer 1

I don't know if this will fix your problem, but you don't need SELECT for the WHEN clauses:

SELECT (CASE WHEN PA.ACTOR_KIND = 5
             THEN POP.KDS_TEKLIF_TUT_TL
             WHEN PA.ACTOR_KIND = 10
             THEN POP.KDS_ALICI_LIM_TL 
             ELSE 0
        END) AS YKF_CUSTOMER_LIMIT

You don't need to give the expression a name in the subquery as well as in the outer query. One name is enough. (Although that doesn't cause your error.)

Select Case Multiple When Select Conditions Gives Error

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