The ‘COMPUTE’ clause is not allowed in a statement containing an INTERSECT or EXCEPT operator.

Error Message:
Msg 323, Level 16, State 1, Line 1
The ‘COMPUTE’ clause is not allowed in a statement containing an INTERSECT or EXCEPT operator.

Severity level:
16.

Description:
This error message appears when you try to use the COMPUTE clause in a statement containing an INTERSECT or EXCEPT operator.

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

Resolution:
Error of the Severity level 16 are generated by the user and can be fixed by the SQL Server user. The statement can not be run this way. You can not use the COMPUTE clause in a statement containing an INTERSECT or EXCEPT operator.

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

Example(s):
SELECT * FROM (SELECT 1 UNION ALL SELECT 2) x (c1)
INTERSECT
SELECT * FROM (SELECT 1) y (c1)
COMPUTE SUM(c1)

Remarks:
In the above example we try to use the COMPUTE clause in a statement containing an INTERSECT operator. This raises the error.




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