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From: Richard Ray <rray@mstc.state.ms.us>
To: Jeff Frost <jeff@frostconsultingllc.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: How to query by column names
Date: Mon, 22 Jan 2007 17:58:23 -0600 (CST)
Message-ID: <Pine.LNX.4.64.0701221756520.8787@rray.drdc.mstc.ms.gov> (raw)
In-Reply-To: <Pine.LNX.4.64.0701221528250.5992@discord.home.frostconsultingllc.com>
References: <Pine.LNX.4.64.0701221612220.10491@rray.drdc.mstc.ms.gov>
	<Pine.LNX.4.64.0701221528250.5992@discord.home.frostconsultingllc.com>

This is not exactly what I need
I want to return the data in t1

On Mon, 22 Jan 2007, Jeff Frost wrote:

> I think this is what you're looking for Richard:
>
> SELECT attname FROM pg_attribute pa, pg_class pc
>  WHERE pc.relname = 't1'
>    AND pa.attrelid = pc.relfilenode
>    AND pa.attisdropped IS FALSE
>    AND pa.attnum > 0;
>
> Let me know if it doesn't do what you intended.
>
> On Mon, 22 Jan 2007, Richard Ray wrote:
>
>> This may be a simple but can I create a query such as
>> 
>> select (select attname from pg_attribute where attrelid = (select 
>> relfilenode from pg_class where relname = 't1') and attisdropped = false 
>> and attnum > 0) from t1;
>> 
>> I get
>> ERROR:  more than one row returned by a subquery used as an expression
>> 
>> Thanks
>> Richard
>> 
>> ---------------------------(end of broadcast)---------------------------
>> TIP 5: don't forget to increase your free space map settings
>> 
>> 
>
> -- 
> Jeff Frost, Owner 	<jeff@frostconsultingllc.com>
> Frost Consulting, LLC 	http://www.frostconsultingllc.com/
> Phone: 650-780-7908	FAX: 650-649-1954
>
> ---------------------------(end of broadcast)---------------------------
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