> I decided to use the int4 sorting routines when the type is
> "InvalidOid", the type apparently assigned to null constants. The sort
> routines probably don't get called anyway since everything is a null,
> and if they did the "pass by value" int4 routines are probably safest.

Good.  That was my suspicion on how to do it.

What does 'select null order by 1;' do now?

I have renamed the append struct names just now as part of an EXPLAIN
fix.  Should not affect you.

> 
> Will continue testing, and need to look into this still:
> 
> postgres=> select 1 union select null union all select null;
> Backend message type 0x44 arrived while idle



-- 
Bruce Momjian                          |  830 Blythe Avenue
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In response to

• Re: Recent updates at 1998-07-15 13:15:41 from Thomas G. Lockhart

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• Re: Recent updates at 1998-07-15 16:26:29 from Thomas G. Lockhart

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Next:	From: Thomas G. Lockhart	Date: 1998-07-15 16:26:29
	Subject: Re: Recent updates
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	Subject: Re: [HACKERS] EXPLAIN doesn't explain operations on inheritance trees