From: | Gerhard Heift <ml-postgresql-20081012-3518(at)gheift(dot)de> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: CREATE parametric partial INDEX within a function body |
Date: | 2009-01-19 21:49:17 |
Message-ID: | 20090119214916.GA6578@gheift |
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Lists: | pgsql-general |
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
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