Re: [HACKERS] Problem with multiple SUMs - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] Problem with multiple SUMs
Date
Msg-id 199901271550.KAA08214@candle.pha.pa.us
Whole thread Raw
Responses Re: [HACKERS] Problem with multiple SUMs  ("D'Arcy" "J.M." Cain <darcy@druid.net>)
List pgsql-hackers
Fixed now.


> I am working on it.
> 
> 
> > After recent changes I find an error with SUM when summing more than
> > one column.  Here is the test sequence.
> > 
> > DROP TABLE x;
> > CREATE TABLE x (a int, b int); 
> > INSERT INTO x VALUES (1, 5);
> > INSERT INTO x VALUES (2, 7);
> > SELECT * FROM x;
> > SELECT SUM(a) FROM x;
> > SELECT SUM(b) FROM x;
> > SELECT SUM(a), SUM(b) FROM x;
> > 
> > The last three statements give the following expected results when
> > run on a system compiled Jan 19.
> > 
> > darcy=> SELECT SUM(a) FROM x;
> > sum
> > ---
> >   3
> > (1 row)
> > 
> > darcy=> SELECT SUM(b) FROM x;
> > sum
> > ---
> >  12
> > (1 row)
> > 
> > darcy=> SELECT SUM(a), SUM(b) FROM x;
> > sum|sum
> > ---+---
> >   3| 12
> > (1 row)
> > 
> > On a system compiled Jan 27, I see the following.
> > 
> > darcy=> SELECT SUM(a) FROM x;
> > sum
> > ---
> >   3
> > (1 row)
> > 
> > darcy=> SELECT SUM(b) FROM x;
> > sum
> > ---
> >  12
> > (1 row)
> > 
> > darcy=> SELECT SUM(a), SUM(b) FROM x;
> > sum|sum
> > ---+---
> >  12| 12
> > (1 row)
> > 
> > See how the individual sums are correct but I can no longer get both
> > sums in one select.
> > 
> > -- 
> > D'Arcy J.M. Cain <darcy@{druid|vex}.net>   |  Democracy is three wolves
> > http://www.druid.net/darcy/                |  and a sheep voting on
> > +1 416 424 2871     (DoD#0082)    (eNTP)   |  what's for dinner.
> > 
> > 
> 
> 
> -- 
>   Bruce Momjian                        |  http://www.op.net/~candle
>   maillist@candle.pha.pa.us            |  (610) 853-3000
>   +  If your life is a hard drive,     |  830 Blythe Avenue
>   +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026
> 


--  Bruce Momjian                        |  http://www.op.net/~candle maillist@candle.pha.pa.us            |  (610)
853-3000+  If your life is a hard drive,     |  830 Blythe Avenue +  Christ can be your backup.        |  Drexel Hill,
Pennsylvania19026
 


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