Return data from multiple tables

Hi there,

I have tables with such structure

transaction_YYMM
(idx,date,company_id,value)

where YYMM stands for 2digits year and month
I want to define query (maybe view, procedure):
select * from [?] where date>='2007-01-01' and date<='2007-04-30'
which will grab data from
transaction_0701
transaction_0702
transaction_0703
transaction_0704
and return all as one

best regards
RafalI want to define query (maybe view, procedure):

Quote:

Originally Posted by

select * from [?] where date>='2007-01-01' and date<='2007-04-30'

A UNION ALL query will combine multiple result sets:

SELECT *
FROM dbo.transaction_0701
UNION ALL
SELECT *
FROM dbo.transaction_0702
UNION ALL
SELECT *
FROM dbo.transaction_0703
UNION ALL
SELECT *
FROM dbo.transaction_0704

You can specify an explicit column list (a Best Practice) and encapsulate
the query in a view to facilitate reuse. You might also consider creating a
partitioned view (or a partitioned table if you are running SQL 2005
Enterprise Edition). See the Books Online for more information.

--
Hope this helps.

Dan Guzman
SQL Server MVP

"Rafa Bielecki" <rafal@.bielecki.infowrote in message
news:f2ubuk$i1o$1@.nemesis.news.tpi.pl...

Quote:

Originally Posted by

Hi there,
>
I have tables with such structure
>
transaction_YYMM
(idx,date,company_id,value)
>
where YYMM stands for 2digits year and month
I want to define query (maybe view, procedure):
select * from [?] where date>='2007-01-01' and date<='2007-04-30'
which will grab data from
transaction_0701
transaction_0702
transaction_0703
transaction_0704
and return all as one
>
best regards
Rafal
>

|||Uzytkownik "Dan Guzman" <guzmanda@.nospam-online.sbcglobal.netnapisal w
wiadomosci news:JOz4i.22889$JZ3.9830@.newssvr13.news.prodigy.n et...

Quote:

Originally Posted by

A UNION ALL query will combine multiple result sets:
>
SELECT *
FROM dbo.transaction_0701
UNION ALL
SELECT *
FROM dbo.transaction_0702
UNION ALL
SELECT *
FROM dbo.transaction_0703
UNION ALL
SELECT *
FROM dbo.transaction_0704
>
You can specify an explicit column list (a Best Practice) and encapsulate
the query in a view to facilitate reuse. You might also consider creating
a partitioned view (or a partitioned table if you are running SQL 2005
Enterprise Edition). See the Books Online for more information.

thank you Dan, your help is very important to me
Rafal|||Rafa Bielecki (rafal@.bielecki.info) writes:

Quote:

Originally Posted by

I have tables with such structure
>
transaction_YYMM
(idx,date,company_id,value)
>
where YYMM stands for 2digits year and month
I want to define query (maybe view, procedure):
select * from [?] where date>='2007-01-01' and date<='2007-04-30'
which will grab data from
transaction_0701
transaction_0702
transaction_0703
transaction_0704
and return all as one

In additions to Dan's response, I like to point out that from a logical
point of view, the above design is flawd. It's a lot easier to deal with a
single table. If there are enourmous volumes, it can still be motivated
with partitioning, but then we are talking enourmous values like tens
of millions of rows per month.

--
Erland Sommarskog, SQL Server MVP, esquel@.sommarskog.se
Books Online for SQL Server 2005 at
http://www.microsoft.com/technet/pr...oads/books.mspx
Books Online for SQL Server 2000 at
http://www.microsoft.com/sql/prodin...ions/books.mspx