From: Terry Lee Tucker <terry@esc1.com>
To: pgsql-sql@postgresql.org
Subject: Re: Novice SQL Question
Date: Mon, 2 Feb 2004 18:00:32 -0500
Message-ID: <200402021800.32906.terry@esc1.com> (raw)
In-Reply-To: <200402021738.06828.terry@esc1.com>
References: <200402021738.06828.terry@esc1.com>
To answer my own question:
I discoverd that the order by fields had to be in the select list. Apparently,
this is a requirement when using "DISTINCT".
On Monday 02 February 2004 05:38 pm, Terry Lee Tucker wrote:
> I need to the following query:
> select distinct event_code, level from logs join stat on (stat.prime is not
> null) where order_num = 130680;
>
> Ok, no problem. Does exactly what I want; however, I need to sort this is a
> particular way to get the right results. When I try to add the order by
> clause, I get an error. Here is the ORDER BY:
> ORDER BY event_date DESC, event_time DESC, event_secs DESC
>
> If I put this where I thought it should go as in:
> select distinct event_code,level from logs join stat on (stat.prime is not
> null) where order_num = 130680 order by event_date,event_time,event_secs;
>
> I get the following error:
> ERROR: For SELECT DISTINCT, ORDER BY expressions must appear in target
> list
>
> No matter where I put it I get errors. Obviously, I'm a novice. Can
> somebody give me any advice? I'm using Postgres 7.2.3 on RedHat.
>
> Thanks...
--
Quote: 48
"Exceeding the bounds of authority is no more a right in a great than
in a petty officer, no more justifiable in a king than in a constable;
but is so much the worse in him, in that he has more trust put in him,
has already a much greater share than the rest of his brethren, and is
supposed from the advantages of his education, employment, and coun-
sellors, to be more knowing in the measures of right and wrong."
--John Locke
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email: terry@esc1.com
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To: pgsql-sql@postgresql.org
Cc: terry@esc1.com
Subject: Re: Novice SQL Question
In-Reply-To: <200402021800.32906.terry@esc1.com>
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