Msg 101, Level 15, State 1, Line 2
Query not allowed in Waitfor.
This error message appears when you try to run a query in a WAITFOR command.
The SQL statement cannot be parsed and further execution is stopped.
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. You cannot run a query in a WAITFOR command.
All versions of SQL Server.
WAITFOR (SELECT 1);
In the above example we try to run the query SELECT 1 in a WAITFOR command. This raises the error.