Shows whether or not SQL executes the statements that you issue
    in your interactive SQL session. The default is to execute the
    statements as you issue them. However, if you have issued a
    SET NOEXECUTE statement in your session, SQL will not execute
    subsequent statements.

    You can use the SET NOEXECUTE statement to display access
    strategies and check for syntax errors. For more information,
    see the SET statement.