Besides <command>SELECT</command> queries, the commands can include data

modification queries (<command>INSERT</command>,

<command>UPDATE</command>, and <command>DELETE</command>), as well as

other SQL commands. (You cannotput transaction commands, e.g.

other SQL commands. (You cannotuse transaction control commands, e.g.

<command>COMMIT</>, <command>SAVEPOINT</>, and some utility

commands, e.g. <literal>VACUUM</>, into an <acronym>SQL</acronym> function.)

However, the final command