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SQL query to get the addition of two tables records count

 
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shekar123
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Joined: 22 Jul 2005
Posts: 528
Topics: 90
Location: Bangalore India
PostPosted: Wed Jul 27, 2005 4:48 am    Post subject: SQL query to get the addition of two tables records count Reply with quote
I have a table A with 20 records and i get the information by giving the query SELECT COUNT(*) FROM A,Similarly i have a table B with 80 records and i get the information by giving the query SELECT COUNT(*) FROM B.Can i have a query to get the addition of the count of the records from two tables as 100 records (addition of A + B ) ?
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kolusu
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Joined: 26 Nov 2002
Posts: 12378
Topics: 75
Location: San Jose
PostPosted: Wed Jul 27, 2005 6:04 am    Post subject: Reply with quote
shekar123,

The following SQL will give you the desired results.

Code:

SELECT SUM(A.CNT)               
  FROM (SELECT COUNT(*) AS CNT 
          FROM TABLE1       
         UNION ALL             
        SELECT COUNT(*) AS CNT 
          FROM TABLE2) A     
 ;   


Hope this helps...

Cheers

kolusu
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shekar123
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Joined: 22 Jul 2005
Posts: 528
Topics: 90
Location: Bangalore India
PostPosted: Thu Jul 28, 2005 1:02 am    Post subject: Query for counting records from two tables Reply with quote
Hai Kolusu,

You are really great.The query did run fine and the logic used for the query is excellent.Thanks.


Shekar123
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