Re: [GENERAL] Functions

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От
Aaron J. Seigo
Тема
Re: [GENERAL] Functions
Дата
Msg-id
99110316023708.00702@stilborne
Ответ на
Functions (Simon Drabble)
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Functions Simon Drabble <simon@eskimo.com>
Re: [GENERAL] Functions "Aaron J. Seigo" <aaron@gtv.ca>
Re: [GENERAL] Functions Simon Drabble <simon@eskimo.com>
Re: [GENERAL] Functions Andrew Perrin - Demography <aperrin@demog.berkeley.edu>
Re: [GENERAL] Functions Simon Drabble <simon@eskimo.com>
hi...
 
>   CREATE FUNCTION fn_fubar(int4) AS
>   'UPDATE foo SET bar = tmp.numb FROM tmp WHERE tmp.numb = $$'
>   LANGUAGSE 'sql';

i hate $1, $2 personally.. they make my eyes cross eventually (esp. once you
have 3 or 4 params.. ick) and they are hard to maintain in larger functions
(what was that $2 param again???)

so i usually use pl/pgsql and do this:

   CREATE FUNCTION fn_fubar(int4) returns int4 AS '
     DECLARE
        myParam   alias for $1;
     BEGIN
       UPDATE foo SET bar = tmp.numb FROM tmp WHERE tmp.numb = myParam;
       return myParam;
     END; '
   LANGUAGSE 'pl/pgsql';

more typing, but easier to read and maintain later... but then, i'm picky.

-- 
Aaron J. Seigo
Sys Admin
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