Msg 482, Level 15, State 2, Line 1
Non-constant or invalid expression is in the TABLESAMPLE or the REPEATABLE clause.
This error message appears when you try to use a non-constant invalid expression 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 use a valid expression in these clauses.
This error message was introduced with SQL Server 2005.
TABLESAMPLE (RAND() PERCENT);
In the above example we try to use the non-constant function RAND() in the TABLESAMPLE clause. This raises the error.