Sql-server – Getting collation confict in IF statment and need help resolving it please

sql-server-2005t-sql

A SQL script I am writing is generating the error:

Cannot resolve the collation conflict between "SQL_Latin1_General_CP1_CI_AS" and "SQL_Latin1_General_CP850_CI_AS" in the equal to operation.

I am not familiar with this error and don't know how to deal with it. I have been able to determine it is caused by the last IF check in the script as once I remove it the script runs fine. Can anyone help me figure out how to fix this issue? Here is my current code:

DECLARE @Source varchar(25);

SET @Source = 'DOD';
/*
Source options are:
    DOD
    SPRAGUEENERGY
    SRAPROD
*/

IF (@Source = 'DOD')
BEGIN
    USE DOD;

END

IF(@Source = 'SPRAGUEENERGY')
BEGIN
    USE SPRAGUEENERGY;

END

IF (@Source = 'SRAPROD')
BEGIN
    USE SRAPROD;
END

Best Answer

Well, that is interesting. I created your 3 databases using different collations for each database. I tried starting from different databases to see the results. Naturally I do not know which collations you used on each database, but apparently the SQL Server is (in fact) aware of this.

  • FIRST - SQL_Latin1_General_CP1_CI_AI
  • DOD - SQL_Latin1_General_CP850_CI_AS
  • SPRAGUEENERGY - SQL_Latin1_General_CP850_CI_AS
  • SRAPROD - SQL_Latin1_General_CP1_CI_AI

Depending on the database I start with (I tried all 4) some give collation errors and some do not. So... The answer is:

IF (@Source COLLATE DATABASE_DEFAULT = 'DBNAME' COLLATE DATABASE_DEFAULT)

This raises no errors no matter which database I start with.

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