Msg 497, Level 15, State 1, Line 3
Variables are not allowed in the TABLESAMPLE or REPEATABLE clauses.
This error message appears when you try to use a variable in the TABLESAMPLE or REPEATABLE clause.
The T-SQL statement can be parsed, but causes the error at runtime.
Error 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. You must replace the variable by a valid expression.
This error message was introduced with SQL Server 2005.
DECLARE @f INT
SET @f = 100
TABLESAMPLE (@f ROWS)
In the above example we try to use a variable of the type INTEGER in the TABLESAMPLE clause. Although INTEGER would be a valid data type, the error is raised.