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Re: plpgsql vs. SQL in stored procedures

From: Ivan Sergio Borgonovo <mail(at)webthatworks(dot)it>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: plpgsql vs. SQL in stored procedures
Date: 2004-03-31 11:07:56
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-sql
On Wed, 31 Mar 2004 03:31:01 -0500
Christopher Browne <cbbrowne(at)acm(dot)org> wrote:

> The forthcoming support for recursive queries using a WITH clause
> might provide, after a fashion, a way to declare variables.

I think I'll have to work with pg 7.3
Does this translate to: you won't be able to use variables?

I was used to do stuff like this with MS SQL

create proc sp_getuid @uid uniqueidentifier
    delete from auth where lapse<dateadd(mi,-25,getdate())
    declare @R_ID int

    set @R_ID=(select R_ID from auth where
        and A_ID=(at)uid)
    if (@R_ID is null)
        delete from auth where A_ID=(at)uid
        select null as R_ID
        update auth set lapse=getdate() where A_ID=(at)uid
        select @R_ID as R_ID

Does it mean that to have variables in SP I'll have to use plpgsql
in spite of plain SQL?

> As for IF, there is a functional equivalent to it in the form of the
> SQL standard CASE statement.

TY for the refreshing pointer. I was looking in the wrong place.

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