From: | Michael Fuhr <mike(at)fuhr(dot)org> |
---|---|
To: | ody quraviharto <odyyudah(at)gmail(dot)com> |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: variable scooping |
Date: | 2006-01-30 04:24:24 |
Message-ID: | 20060130042424.GA56410@winnie.fuhr.org |
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Lists: | pgsql-sql |
On Mon, Jan 30, 2006 at 09:01:37AM +0700, ody quraviharto wrote:
> "declare tbl_name varchar:='tbl_A';
> begin
> if exists(select 1 from pg_tables where tablename=tbl_name) then
> select count(*) from tbl_name;
> end if;
> end"
>
> the message was: syntax error in $1 in "select count(*) from $1".
You'll need to use EXECUTE for this query; see "Executing Dynamic
Commands" in the PL/pgSQL documentation. Here's the link for 8.1
(but use the documentation for whatever version you're running):
--
Michael Fuhr
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