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07.15.2008 at 01:14PM PDT, ID: 23567485
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9.9

Multiple select query utilizing group by, and unions-- it works, but is it the best way?

Asked by caseyrharris in SQL Query Syntax

The following sample shows a way in which I am returning exactly what I want to see, and is pretty fast to fun, but it just seems like a pain in the butt.  I am not just doing totals A, B, C but over 14 of them and there is more complex joins and where statements in each, but the snippet is just to give an example of the method I am using that works.

Is there a better way?

Thanks for your help,
CaseyStart Free Trial 
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select 
	  control
	  sum(totala)  as totala
	, sum(totalb) as totalb
	, sum(totalc) as totalc 
from 
(
 
SELECT CONTROL
	SUM(A.AMTSUBTOTAL) AS TOTALA
	'0' AS TOTALB
	'0' AS TOTALC 
		FROM mytable a 
			where a.col1 like 'something' and a.col2 in (select anothertable.col1 from anothertable) 
 
union 
SELECT CONTROL
	'0' AS TOTALA
	SUM(b.AMTSUBTOTAL) AS TOTALB
	'0' AS TOTALC 
		FROM mytable2  b
			where b.col1 like 'something2' and b.col2 in (select yetanothertable.col1 from yetanothertable) 
union
SELECT CONTROL
	'0' AS TOTALA
	'0' AS TOTALB
	SUM(C.AMTSUBTOTAL) AS TOTALC 
		FROM mytable2 C 
			where a.col1 like 'somethingELSE' and C.col2 in (select andanothertable.col1 from andanothertable) ) uniontable
group by control
 
Keywords: Multiple select query utilizing group by…
Title
1 Problem with UNION query
2 Union Query - Query is too complex e…
3 MySQL complex SQL (insert/update)
4 Access Union Tutorial Query
5 Complex numbers Class
6 UNION in query
 
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[+][-]07.15.2008 at 01:16PM PDT, ID: 22010619

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About this solution

Zone: SQL Query Syntax
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Solution Provided By: angelIII
Participating Experts: 1
Solution Grade: A
 
 
[+][-]07.15.2008 at 01:39PM PDT, ID: 22010859

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20080716-EE-VQP-32 / EE_QW_2_20070628