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From:Brian Reichert Date:September 17 2002 7:16pm
Subject:Re: aggregate functions producing bad data
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On Tue, Sep 17, 2002 at 11:59:42AM -0700, Richard Unger wrote:
> My query:
> 
> SELECT 
> 	count(id), 
> 	count( IF(call_end - call_start > 5, id, NULL) ), 
> 	count( IF(call_end - call_start <= 5, id, NULL) )
> FROM 
> 	t_calllog_calls;
> 
> My result:
> 
> 1994
> 1956
> 35
> 
> However, 1956 + 35 != 1994.
> 
> Running MySQL 3.23.49-nt

One thing I'd check:  what happens if t_calllog_calls.id is NULL?

> Cheers,
> Rich

-- 
Brian 'you Bastard' Reichert		<reichert@stripped>
37 Crystal Ave. #303			Daytime number: (603) 434-6842
Derry NH 03038-1713 USA			Intel architecture: the left-hand path
Thread
aggregate functions producing bad dataRichard Unger17 Sep
  • Re: aggregate functions producing bad dataBrian Reichert17 Sep
    • Re: aggregate functions producing bad dataDan Nelson17 Sep
  • Re: aggregate functions producing bad dataGelu Gogancea17 Sep
  • Re: aggregate functions producing bad dataGelu Gogancea17 Sep
    • Re: aggregate functions producing bad datamtoth18 Sep
  • Re: aggregate functions producing bad dataGelu Gogancea17 Sep
RE: aggregate functions producing bad dataRichard Unger17 Sep
RE: aggregate functions producing bad dataRichard Unger17 Sep
  • RE: aggregate functions producing bad datamtoth17 Sep
RE: aggregate functions producing bad dataRichard Unger17 Sep
  • Re: aggregate functions producing bad dataJay17 Sep
    • re: Re: aggregate functions producing bad dataVictoria Reznichenko18 Sep
RE: aggregate functions producing bad dataRichard Unger17 Sep
RE: aggregate functions producing bad dataRichard Unger17 Sep
  • Re: aggregate functions producing bad dataBenjamin Pflugmann18 Sep
RE: aggregate functions producing bad dataGerben Gieling18 Sep