Cannot resolve the collation conflict between “Latin1_General_CI_AI” and “SQL_Latin1_General_CP1_CI_AS” in the equal to operation

问题

I am trying to create a procedure in SQL Server 2008R2 but it is showing this error

Cannot resolve the collation conflict between "Latin1_General_CI_AI" and "SQL_Latin1_General_CP1_CI_AS" in the equal to operation.

The procedure that I have created is

CREATE Procedure Ps_Quiz_OnlineTest_QuestionsWithOptions_Get --'Ques1'
  @Ques Varchar(8000)
As        
Begin

  Select 
    A.QuestionId, 
    A.QsnDesc, 
    A.CorrectOption, 
    B.OptionValue, 
    A.Marks,
    (
      Select QsnName 
      From Quiz_tblQsnsLimitMaster
      Where QsnId = @Ques) QuesPaper,
    (
      Select Durationoftest 
      From Quiz_tblQsnsLimitMaster
      Where QsnId = @Ques) QuesPaper
    From 
      Quiz_tblQsnCreationMaster A, 
      Quiz_tblQsnCreationDetail B        
    Where 
      A.QuestionId = B.QuestionId
      And A.QuestionId In (
        Select QuestionIds 
        From FN_Question_Answers_Quiz(@Ques))
      And B.QuestionId In (
        Select QuestionIds 
        From FN_Question_Answers_Quiz(@Ques))  
    Order By 
      A.QuestionId, 
      B.OptionOrder 

End

I tried to collate tables with different collations but it did not worked. How can I solve this.

回答1:

probably this might help, change your where condition like this

Where A.QuestionId COLLATE DATABASE_DEFAULT = B.QuestionId  COLLATE DATABASE_DEFAULT

回答2:

Since you've mentioned that QuestionID in each table is varchar, it's probably the comparison between those. So at a guess, try changing the line:

Where A.QuestionId = B.QuestionId  And

To the following:

Where A.QuestionId = B.QuestionId COLLATE SQL_Latin1_General_CP1_CI_AS And

I'd prefer it if you used proper join syntax for your tables - but that's for another day ;-)

回答3:

try use this, where fieldname COLLATE DATABASE_DEFAULT = secondfieldname COLLATE DATABASE_DEFAULT

this is working

回答4:

Just use the following syntax when joining tables with different collations,

where  A.QuestionId collate SQL_Latin1_General_CP1_CI__AS = B.QuestionId collate
SQL_Latin1_General1_General_CP1_CI_AS

回答5:

To overcome this use the below code:

SELECT NAME
FROM sys.objects
WHERE NAME COLLATE DATABASE_DEFAULT NOT IN (SELECT TYPE  
FROM sys.objects)

来源：https://stackoverflow.com/questions/18077815/cannot-resolve-the-collation-conflict-between-latin1-general-ci-ai-and-sql-la

标签

sql-server

sql-server-2008-r2