Re: [HACKERS] Problem with multiple SUMs

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.
> 
> 


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