DEALLOCATE SQL - Language Statements DEALLOCATE deallocate a prepared statement DEALLOCATE prepared statements removing DEALLOCATE [ PREPARE ] { name | ALL } DEALLOCATE is used to deallocate a previously prepared SQL statement. If you do not explicitly deallocate a prepared statement, it is deallocated when the session ends. For more information on prepared statements, see . PREPARE This key word is ignored. name The name of the prepared statement to deallocate. ALL Deallocate all prepared statements. The SQL standard includes a DEALLOCATE statement, but it is only for use in embedded SQL.