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SQL Server 2005 SQL Error

Posted on 2009-04-01
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Last Modified: 2012-05-06
The below SQL is producing the following error:

Msg 207, Level 16, State 1, Line 21
Invalid column name 'StartDate'.
Msg 207, Level 16, State 1, Line 22
Invalid column name 'ClosingDateFinal'.
Msg 207, Level 16, State 1, Line 22
Invalid column name 'ClosingDateF2'.

Any ideas?
CASE WHEN [dtStart] IS NULL THEN NULL 
      ELSE CAST(MONTH([dtStart]) AS varchar(2)) + '/1/' + 
               CAST(YEAR([dtStart]) AS varchar(4)) + ' 5:00 PM' END AS StartDate,
CAST([StartDate] AS datetime) AS StartDate2,
CASE WHEN StartDate Is Null THEN Null ELSE [StartDate2] END AS Dt3

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Question by:CipherIS
3 Comments
 
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Expert Comment

by:Chris Luttrell
ID: 24043598
I am assuming this is the select column list in a query.  startdate looks to be a column alias and you can not use it on another line.  You will have to reuse the entire logic for startdate or rework the query some, but there is not enough detail here to help with that.
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Accepted Solution

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BrandonGalderisi earned 500 total points
ID: 24043618
StartDate and StartDate2 are not columns in your table, they are aliases in your select statement.  They cannot be referenced in the statement itself unless you place the select into a derived table.  From there, the statements can reference by alias.

example:
select CASE WHEN StartDate Is Null THEN Null ELSE [StartDate2] END AS Dt3
from
(select CAST([StartDate] AS datetime) AS StartDate2
from 
(select CASE WHEN [dtStart] IS NULL THEN NULL 
      ELSE CAST(MONTH([dtStart]) AS varchar(2)) + '/1/' + 
               CAST(YEAR([dtStart]) AS varchar(4)) + ' 5:00 PM' END AS StartDate
from TableA) a)b)c

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Expert Comment

by:vinurajr
ID: 24043780
IS THE CODE U SEND IS CORRECT.. WHAT IS UR REQUIREMENT...?
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