From: | Reg Me Please <regmeplease(at)gmail(dot)com> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Cc: | Gerhard Heift <ml-postgresql-20081012-3518(at)gheift(dot)de> |
Subject: | Re: CREATE parametric partial INDEX within a function body |
Date: | 2009-01-19 22:28:08 |
Message-ID: | 200901192328.08389.regmeplease@gmail.com |
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Lists: | pgsql-general |
On Monday 19 January 2009 22:49:17 Gerhard Heift wrote:
> On Mon, Jan 19, 2009 at 08:19:06PM +0100, Reg Me Please wrote:
> > Hi all.
> >
> > I have a maintenance PL/pgSQL function that needs to recreate a partial
> > index (not a REINDEX, though).
> > In the WHERE condition of the index I have one of the function arguments.
> > A plain "CREATE INDEX ... WHERE ..." will lead to a runtime error like
> > this:
> >
> > tmp2=# SELECT * FROM f_maint1( '20080401'::timestamptz );
> > ERROR: there is no parameter $1
> > CONTEXT: SQL statement "CREATE INDEX i_special_part ON t_atable(
> > col1,col2 ) WHERE col3 >= $1 "
> > PL/pgSQL function "f_maint1" line 28 at SQL statement
> >
> > To work this issue around I switched to dynamic SQL with "EXECUTE 'CREATE
> > INDEX ...' "
>
> What about
>
> EXECUTE 'CREATE INDEX bla ON t_table WHERE (col >= '
>
> || pg_catalog.quote_literal($1) || ')';
>
> Regards,
> Gerhard
Exactly what I did:
> > To work this issue around I switched to dynamic SQL with "EXECUTE 'CREATE
> > INDEX ...' "
The question remains, though.
--
Fahrbahn ist ein graues Band
weisse Streifen, grüner Rand
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