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* Combining queries while preserving order in SQL - Help!
@ 2002-12-02 18:46 Casey Allen Shobe <cshobe@osss.net>
2002-12-02 19:23 ` Re: Combining queries while preserving order in SQL - Help! Joel Burton <joel@joelburton.com>
0 siblings, 1 reply; 2+ messages in thread
From: Casey Allen Shobe @ 2002-12-02 18:46 UTC (permalink / raw)
To: pgsql-sql
Hi there,
I need to do the following in one SQL query:
select field1, field2, field3, field4, field5 from table where field6 < 5
order by field1
And a totals line which shows the sum for each column.
The important part is that I need to preserve the order by of the first query.
Is there any way to do this in one query?
Thank you,
--
Casey Allen Shobe, Open Source Software Solutions
cshobe@osss.net / http://www.osss.net / 770-653-4526
^ permalink raw reply [nested|flat] 2+ messages in thread
* Re: Combining queries while preserving order in SQL - Help!
2002-12-02 18:46 Combining queries while preserving order in SQL - Help! Casey Allen Shobe <cshobe@osss.net>
@ 2002-12-02 19:23 ` Joel Burton <joel@joelburton.com>
0 siblings, 0 replies; 2+ messages in thread
From: Joel Burton @ 2002-12-02 19:23 UTC (permalink / raw)
To: Casey Allen Shobe <cshobe@osss.net>; +Cc: pgsql-sql
On Mon, Dec 02, 2002 at 01:46:38PM -0500, Casey Allen Shobe wrote:
> Hi there,
>
> I need to do the following in one SQL query:
>
> select field1, field2, field3, field4, field5 from table where field6 < 5
> order by field1
>
> And a totals line which shows the sum for each column.
>
> The important part is that I need to preserve the order by of the first query.
>
> Is there any way to do this in one query?
create table foo (a int, b int, c int );
insert into foo values (1,2,3);
insert into foo values (4,5,6);
select '' as label,
*
from foo
union all
select 'TOTAL',
sum(a),
sum(b),
sum(c)
from foo
order by 1,2;
(you wouldn't need the label column to sort by, except that a might
contain negative numbers, so the sum might be _less_ than some/all of
the numbers. by first sorting on this junk column, we can force the
totals at the bottom).
p.s. don't forget the "union __all__", otherwise you'll get rid of
duplicate entries in the your table.
--
Joel BURTON | joel@joelburton.com | joelburton.com | aim: wjoelburton
Independent Knowledge Management Consultant
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2002-12-02 18:46 Combining queries while preserving order in SQL - Help! Casey Allen Shobe <cshobe@osss.net>
2002-12-02 19:23 ` Joel Burton <joel@joelburton.com>
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