 by the database server.
    </P
><P
>     That means that your client application must send each query to
     the database server, wait for it to be processed, receive and
     process the results, do some computation, then send further
     queries to the server.  All this incurs interprocess
     communication and will also incur network overhead if your client
     is on a different machine than the database server.
    </P
><P
>     With <SPAN
CLASS="APPLICATION"
>PL/pgSQL</SPAN
> you can group a bloc