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Re: BUG #4275: Multicolumn subquery expression not allowed on both sides of IS DISTINCT FROM

From: Carl-Daniel Hailfinger <c-d(dot)hailfinger(dot)devel(dot)2006(at)gmx(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #4275: Multicolumn subquery expression not allowed on both sides of IS DISTINCT FROM
Date: 2008-07-02 17:51:19
Message-ID: 486BC017.2080609@gmx.net (view raw or flat)
Thread:
Lists: pgsql-bugs
On 01.07.2008 16:32, Tom Lane wrote:
> "Carl-Daniel Hailfinger" <c-d(dot)hailfinger(dot)devel(dot)2006(at)gmx(dot)net> writes:
>   
>> This works:
>> # SELECT ROW(true,true)=(SELECT true,true);
>>     
>
>   
>> This doesn't:
>> # SELECT (SELECT true,true)=(SELECT true,true);
>> Error:  42601: subquery must return only one column
>>     
>
> This is not a bug, since we do not claim support for feature F641.
>   

Thanks for the information. Is there any plan to support that feature in
8.4?



Regards,
Carl-Daniel

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Next:From: Tom LaneDate: 2008-07-03 00:28:21
Subject: Re: BUG #4275: Multicolumn subquery expression not allowed on both sides of IS DISTINCT FROM
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Subject: Re: BUG #4274: uuid returns duplicate values

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