UNION ALL AND GROUP BY

Is it possible to run in the same sql 2000 query a union all and group by statement

what I am doing is creating a view from 4 different tables which hold a siteid in them.
then i want to get a unique list of them but dont really want to do this in 2 views

create view zAllSiteid

select call_siteid as siteid from tbl_calls
union all
select  inventory_siteid as siteid from tbl_inventory
union all
select orders_siteid as siteid from tbl_Orders


then I would do a


select siteid from zAllSite
group by siteid
order by siteid

can i do this in one query?





Chris MichalczukConsultantAsked:
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mayank_joshiConnect With a Mentor Commented:
select  derived_table.siteid from (select call_siteid as siteid from tbl_calls
union all
select  inventory_siteid as siteid from tbl_inventory
union all
select orders_siteid as siteid from tbl_Orders)  derived_table
group by  derived_table.siteid
order by  derived_table.siteid

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0
 
Pratima PharandeCommented:
try this

Select x.siteid from(
select siteid from zAllSite
group by siteid ) x

order by x.siteid
0
 
mayank_joshiConnect With a Mentor Commented:
try the concept of derived table :-

select siteid from (select call_siteid as siteid from tbl_calls
union all
select  inventory_siteid as siteid from tbl_inventory
union all
select orders_siteid as siteid from tbl_Orders)  derived_table
group by siteid
order by siteid

0
 
Chris MichalczukConsultantAuthor Commented:
thanks derived table concept is good solution for what i needed to do
0
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