This tip is also clarifying the behaviour which msdn only provides a single sentence.īeware of performance issues due to collation differences, especially when using the "collate both sides to default" method - you'll need to convert according to the flow of data in the query in order to use indexes properly. For example, Microsoft Dynamics, Sharepoint, SSRS databases, SAP, etc have different collation and it is not something that you can rebuild the database collation if you want to produce a report out of all these databases. The collation error message helps by telling you what the actual DB collations are.īut sometimes database collation is not something that you can control. Switching to the actual collation of the remote database (eg COLLATE Latin1_General_BIN) removed the overhead and the query was virtually instant again. ON PT.Value = TA.Value COLLATE DATABASE_DEFAULTĮxpanding a bit on Alex's comment - I had major performance issues using COLLATE DATABAS_DEFAULT where a query that should have executed almost instantly took around 10 seconds. My question is How following query return count of 2 instead of 1 dbo.PermTable is already in Case sensitive collation. In this query Collation of temporray table has been changed in Join condition and. I wonder How Query #7 is returning count of 2 rows. If you execute Query 7 in the context of database CaseSensitiveDB, then you will get value of 1. Hence it is case insensitive and returns value of 2. In Query 7, the context of the user database is master. The COLLATE DATABASE_DEFAULT uses the collation of the database context where the the query is executing. "SQL_Latin1_General_CP1_CI_AS" in the equal to operation.”īut I have verified both DB, column they have same collation as SQL_Latin1_General_CP1_CI_ASĪnd also confirmed Latin1_General_CI_AS is not used in DB. “Cannot resolve the collation conflict between "Latin1_General_CI_AS" and Select name ColumnName, object_schema_name(id) SchemaName,object_name(id) TableName, collation, *Īfter upgrading sqlserver 2014, I am getting below error The query below will tell you the collation for the column involved. Its probably best to check the collation of the user and target table.
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