Re: CREATE parametric partial INDEX within afunction body

On Monday 19 January 2009 23:28:08 Reg Me Please wrote:
> 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.

Is that a bug or is the documentation needing improvements?

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