This statement closes the Interactive SQL window if you are running Interactive SQL as a windowed program, or terminates Interactive
SQL altogether when run in command-prompt (batch) mode. In both cases, the database connection is also closed. Before closing
the database connection, Interactive SQL automatically executes a COMMIT statement if the commit_on_exit option is set to
On. If this option is set to Off, Interactive SQL performs an implicit ROLLBACK. By default, the commit_on_exit option is
set to On.
The optional return code can be used in batch files to indicate success or failure of the commands in an Interactive SQL command
file. The default return code is 0.