From: Bruce Momjian <bruce@momjian.us>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: PostgreSQL-documentation <pgsql-docs@postgresql.org>
Subject: Re: Partitioning documentation example
Date: Fri, 4 Jan 2008 11:54:48 -0500 (EST)
Message-ID: <200801041654.m04GsmD17385@momjian.us> (raw)
In-Reply-To: <1199463350.18598.121.camel@ebony.site>
Simon Riggs wrote:
> On Fri, 2008-01-04 at 10:27 -0500, Bruce Momjian wrote:
>
> > It seems to me it would be much clearer if we added a second example
> > that used to_char() to create the INSERT statement dynamically based on
> > NEW.logdate:
> >
> > CREATE OR REPLACE FUNCTION measurement_insert_trigger()
> > RETURNS TRIGGER AS $$
> > BEGIN
> > EXECUTE 'INSERT INTO measurement_y' || to_char(NEW.logdate,'YYYY_mMM') || ' VALUES (NEW.*)';
> > END;
> > $$
> > LANGUAGE plpgsql;
> >
> > It will of course fail if the table does not exist, which I think is
> > what we want. This trigger function would not have to be modified when
> > new tables are added.
>
> I like your new trigger better than the old, but I am still
> uncomfortable with recommending we use triggers with COPY for
> performance reasons and we should add a caveat.
OK, I will add this example in addition to the examples already present.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://postgres.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
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To: pgsql-docs@postgresql.org
Cc: bruce@momjian.us, simon@2ndquadrant.com
Subject: Re: Partitioning documentation example
In-Reply-To: <200801041654.m04GsmD17385@momjian.us>
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