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SQL Query Help Needed?

 
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ramu_mohan21
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Joined: 29 Jun 2004
Posts: 106
Topics: 41
Location: Bangalore, INDIA

PostPosted: Tue Apr 17, 2007 8:57 am    Post subject: SQL Query Help Needed? Reply with quote

HI Board,
I have the data in Table-A(Fields: F1, F2, F3) and Table-B(Fields:Q1,Q2) like below:

Table-A
---------
Code:
F1        F2     F3
=         ===    =====
A         ABC    ABCD
A         XYZ    XYZA
A         PQR    PQRS
B         CCC    CCCC
B         DDD    DDDD

Table-B
---------
Code:

Q1       Q2
==       ======
A        NNNNNNNN
B        LLLLLLLLLLL
C        JJJJJJJJJJJJ

I want to the data like below:
Code:

Q2              F1      Count
===========     ==      =====
NNNNNNNN        A        3
LLLLLLLLLLL     B        2


Count is the No of rows in Table-A for each type
Please anybody can help me in writing the SQL Query?
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Rammohan Pabba
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kolusu
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Joined: 26 Nov 2002
Posts: 12366
Topics: 75
Location: San Jose

PostPosted: Tue Apr 17, 2007 9:10 am    Post subject: Reply with quote

ramu_mohan21,

Unless I am missing something , this is a simple query. Try this untested solution

Code:

SELECT B.Q2         
      ,A.F1         
      ,COUNT(*)     
  FROM Table1 A         
      ,Table2 B         
 WHERE A.F1  = B.Q1
 GROUP BY B.Q2     
         ,A.F1     
         ; 


Hope this helps...

Cheers

Kolusu
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ramu_mohan21
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Joined: 29 Jun 2004
Posts: 106
Topics: 41
Location: Bangalore, INDIA

PostPosted: Tue Apr 17, 2007 9:56 am    Post subject: Reply with quote

HI Kolusu,

I have already tried as you mentioned above. At that time I have below error:

DSNT408I SQLCODE = -122, ERROR: A SELECT STATEMENT WITH NO GROUP BY CLAUSE CONTAINS A COLUMN NAME AND AN AGGREGATE FUNCTION IN THE SELECT CLAUSE OR A COLUMN NAME IS CONTAINED IN THE SELECT CLAUSE BUT NOT IN THE GROUP BY CLAUSE
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kolusu
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Location: San Jose

PostPosted: Tue Apr 17, 2007 10:14 am    Post subject: Reply with quote

ramu_mohan21,

If you run the query as is then you will NOT get the -122 error. I am selecting 2 columns and those 2 columns are present in my GROUP by clause. You must be running a different query. Run the query as is shown above in spufi/qmf and shows us the error messages if you get any

Kolusu
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ramu_mohan21
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Topics: 41
Location: Bangalore, INDIA

PostPosted: Wed Apr 18, 2007 1:02 am    Post subject: Reply with quote

You are right. I wrote a wrong SQL Query. I didn't keep B.Q2 in GROUP BY Clause. Now it is working fine.

Thank you for your immediate answer.
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