Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_100_CI_AS”

Cannot resolve the collation conflict between “SQL_Latin1_General_CP1_CI_AS” and “Latin1_General_100_CI_AS” in the equal to operation.

in Italian

Impossibile risolvere il conflitto tra le regole di confronto “SQL_Latin1_General_CP1_CI_AS” e “Latin1_General_100_CI_AS” nell’operazione equal to.

Cannot resolve the collation conflict between…, SELECT command example

[sourcecode lang=”SQL”]
SELECT * FROM YourTableName1 One INNER JOIN YourTableName2 Two on One.YourColumnName = Two.OffendingColumn
[/sourcecode]

Cause:
You have two tables with different collation in the columns

Solution 1:

Use COLLATE Left or Right side of comparison in your SELECT command, for example:

[sourcecode lang=”SQL”]
SELECT * FROM YourTableName1 One INNER JOIN YourTableName2 Two on One.YourColumnName = Two.OffendingColumn COLLATE SQL_Latin1_General_CP1_CI_AS
[/sourcecode]

Solution 2:
Change collation of your OffendingColumn in one of your tables so you’ll have the same collation in for successive comparison
[sourcecode lang=”SQL”]
ALTER TABLE YourTableName
ALTER COLUMN OffendingColumn
VARCHAR(100) COLLATE Latin1_General_CI_AS NOT NULL
[/sourcecode]

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