Cannot specify included columns for a clustered index.

Error Message:
Msg 10601, Level 16, State 1, Line 1
Cannot specify included columns for a clustered index.

Severity level:
16.

Description:
This error message appears when you try to use the INCLUDE clause for a clustered index.

Consequences:
The T-SQL statement can be parsed, but causes the error at runtime.

Resolution:
Errors of the Severity Level 16 are generated by the user and can be fixed by the SQL Server user. The statement cannot be executed this way. You cannot specify included columns for a clustered index.

Versions:
This error message was introduced with SQL Server 2005.

Example(s):
IF OBJECT_ID (‘dbo.t’) IS NOT NULL
    DROP TABLE dbo.t;
GO

CREATE TABLE dbo.t
(
    c1 int,
    c2 int
);
GO
CREATE CLUSTERED INDEX CX_t_c1 ON dbo.t (c1) INCLUDE (c2);

Remarks:
In the above example we try to create a clustered index with an included column. This raises the error.




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