Column '%.*ls.%.*ls' is not of same collation as referencing column '%.*ls.%.*ls' in foreign key '%.*ls'.

Error Message:
Msg 1757, Level 16, State 0, Line 4
Column ‘%.*ls.%.*ls’ is not of same collation as referencing column ‘%.*ls.%.*ls’ in foreign key ‘%.*ls’. Severity level:
16. Description:
This error message appears when you try to define a foreign key constraing on columns having different collations. Consequences:
The T-SQL statement can be parsed, but causes the error at runtime. Resolution:
Errors of the Severity Level 15 are generated by the user and can be fixed by the SQL Server user. The statement cannot be executed this way. Columns in a foreign key constraint must be of the same collation. Versions:
All versions of SQL Server. Example(s):
IF OBJECT_ID (‘dbo.T1’) IS NOT NULL
    DROP TABLE dbo.T1;
GO
IF OBJECT_ID (‘dbo.T2’) IS NOT NULL
    DROP TABLE dbo.T2;
GO CREATE TABLE dbo.T1 (c2 varchar(20) COLLATE Albanian_BIN NOT NULL PRIMARY KEY); CREATE TABLE dbo.T2 (c2 varchar(20) COLLATE SQL_Scandinavian_CP850_CI_AS
    CONSTRAINT FK_T2_T1 FOREIGN KEY REFERENCES dbo.T1 (c2)
        
); Remarks:
In the above example we try to define a foreign key constraint on columns having a different collation. This raises the error. ]]>

Leave a Reply

Your email address will not be published. Required fields are marked *