Can someone tell me why I get error: Msg 207, Level 16, State 1, Procedure ExtractPDP4FromPDP, Line 21 Invalid column name 'ContainsEX'.
when executing the following stored procedure.
CREATE PROCEDURE ExtractPDP4FromPDP
-- Add the parameters for the stored procedure here
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
-- Insert statements for procedure here
SELECT PDP.*, LEFT(PDPCode,7) AS PDP7, PDP.Obsolete,
PDP.InvestorPDP, PDP.OnlineReport, PDP.ClientSpecific,
ContainsEX = CASE
WHEN(CHARINDEX(Left(PDPCode,5),'EX')>0) THEN 'True'
ELSE 'False'
END, PDP4 =
CASE
WHEN ContainsEX = 'True' THEN 'E' & SUBSTRING(pdpcode,5,3)
ELSE SUBSTRING(pdpcode,6,3)
END
FROM PDP
WHERE (((PDP.Obsolete)='False') AND ((PDP.InvestorPDP)='True') AND
((PDP.OnlineReport)='False') AND ((PDP.ClientSpecific)='False'));
END
GO
Thank You in advance
Sql Server does not allow you to refer to fields on the same level. You'd have to create a subquery, like:
select *,
PDP4 = CASE
WHEN ContainsEX = 'True' THEN 'E' & SUBSTRING(pdpcode,5,3)
ELSE SUBSTRING(pdpcode,6,3)
END
from (
select *, LEFT(PDPCode,7) AS PDP7, PDP.Obsolete,
PDP.InvestorPDP, PDP.OnlineReport, PDP.ClientSpecific,
ContainsEX = CASE
WHEN(CHARINDEX(Left(PDPCode,5),'EX')>0) THEN 'True'
ELSE 'False'
END
from PDP
WHERE (((PDP.Obsolete)='False') AND ((PDP.InvestorPDP)='True') AND
((PDP.OnlineReport)='False') AND ((PDP.ClientSpecific)='False'))
) sub
You cannot use a column in a statement immediately after defining it.
One alternative is to use stacked CTEs to build up your expressions or use nested queries:
WITH cte1 AS (
SELECT x, x AS y
FROM t
),cte2 AS (
SELECT x, y, x + y AS z
FROM cte1
)
SELECT x, y, z
FROM cte2
Your case statement is not correct. CASE WHEN 'value' = 'value' THEN 'do something like CONTAINEX = 'grandma' END
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