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Query to perform join

 
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itmanand

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Joined: 18 Dec 2008
Posts: 24
Location: Newyork

PostPosted: Fri Feb 13, 2009 1:26 pm    Post subject: Query to perform join
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Table 1
---------

Country region division amount
US 1001 01 300
FR 2001 01 100
IN 3001 02 200
JP 1002 01 500

Table 2
---------
Country region division division code
US 1001 01 T
FR 2001 01 P
IN 3001 02 P
JP 1002 01 T

Result
-------
Country region division amount
US 1001 01 300
JP 1002 01 500

Can someone help me to buid a query for this? The output of the 3rd table should be when country, region and division in two tables match and the division code is T.
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Bharath Bhat

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Joined: 20 Mar 2008
Posts: 283
Location: chennai

PostPosted: Fri Feb 13, 2009 3:15 pm    Post subject:
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Code:
SELECT *
  FROM TABLE1 A
 WHERE EXISTS(SELECT 1
                FROM TABLE2 B
               WHERE A.COUNTRY = B.COUNTRY
                 AND A.REGION = B.REGION
                 AND A.DIVISION = B.DIVISION
                 AND B.CODE = 'T')
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ashimer

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Joined: 13 Feb 2004
Posts: 551
Location: Bangalore

PostPosted: Fri Feb 13, 2009 5:07 pm    Post subject:
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An inner join of A and B on country, region and division with a condition division = 'T' would be better than a co-related query ...
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