Re: Trigger firing order odd?

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От Philip Warner
Тема Re: Trigger firing order odd?
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Msg-id 5.1.0.14.0.20030502151626.0622b4f0@mail.rhyme.com.au
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Ответ на Trigger firing order odd?  (Philip Warner <pjw@rhyme.com.au>)
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Sample code should have been:

CREATE TABLE zzz (    f1 integer
);


--
-- TOC entry 632 (OID 3098251)
-- Name: zzz_tg_proc (); Type: FUNCTION; Schema: public; Owner: pgsql
--

CREATE or REPLACE FUNCTION zzz_tg_proc () RETURNS "trigger"    AS 'Begin Raise NOTICE ''In trigger %'',TG_NAME; return
NEW;end'   LANGUAGE plpgsql;
 

CREATE FUNCTION zzz_proc () RETURNS void    AS 'Begin Raise NOTICE ''In proc'';        update zzz set f1 = 2 where
f1=1;       Raise NOTICE ''Updating again'';        update zzz set f1 = 1 where f1=2;        Raise NOTICE ''Leaving
Proc'';       return;        end;' Language 'plpgsql';
 

CREATE TRIGGER zzz_upd_bef_tg    BEFORE UPDATE ON zzz    FOR EACH ROW    EXECUTE PROCEDURE zzz_tg_proc ();

CREATE TRIGGER zzz_upd_aft_tg    AFTER UPDATE ON zzz    FOR EACH ROW    EXECUTE PROCEDURE zzz_tg_proc ();

CREATE TRIGGER zzz_add_bef_tg    BEFORE INSERT ON zzz    FOR EACH ROW    EXECUTE PROCEDURE zzz_tg_proc ();

CREATE TRIGGER zzz_add_aft_tg    AFTER INSERT ON zzz    FOR EACH ROW    EXECUTE PROCEDURE zzz_tg_proc ();

insert into zzz values(1);
NOTICE:  In trigger zzz_add_bef_tg
NOTICE:  In trigger zzz_add_aft_tg

select zzz_proc();
NOTICE:  In proc
NOTICE:  In trigger zzz_upd_bef_tg
NOTICE:  Updating again
NOTICE:  In trigger zzz_upd_bef_tg
NOTICE:  Leaving Proc
NOTICE:  In trigger zzz_upd_aft_tg
NOTICE:  In trigger zzz_upd_aft_tg






----------------------------------------------------------------
Philip Warner                    |     __---_____
Albatross Consulting Pty. Ltd.   |----/       -  \
(A.B.N. 75 008 659 498)          |          /(@)   ______---_
Tel: (+61) 0500 83 82 81         |                 _________  \
Fax: (+61) 03 5330 3172          |                 ___________ |
Http://www.rhyme.com.au          |                /           \|                                 |    --________--
PGP key available upon request,  |  /
and from pgp5.ai.mit.edu:11371   |/



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