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HELP in query

Author

Topic

viswaratha
Starting Member

3 Posts

Posted - 2012-03-28 : 11:17:30

Table T1
C1 C2 C3 C4 C5.............
--------------------------------------
A 1 N
B 1 Y
B 1 N
B 2 N

I have this above table.
For every entry with C3 = 'Y', there will be a C3 = 'N'.
I want to write a query which selects all the records ignoring the records with C3 = 'N' when there is an entry for 'Y'.

Expected RESULT:

C1 C2 C3 C4 C5.............
--------------------------------------
A 1 N
B 1 Y
B 2 N

Thanks,
Raja

viswaratha
Starting Member

3 Posts

Posted - 2012-03-28 : 11:18:18

Just want to add. I am using a DB2 database.

Thanks,
Raja

khtan
In (Som, Ni, Yak)

17689 Posts

Posted - 2012-03-28 : 11:22:08

try http://www.dbforums.com/db2/

This site is on MS SQL Server

KH
[spoiler]Time is always against us[/spoiler]

viswaratha
Starting Member

3 Posts

Posted - 2012-03-28 : 11:28:43

Thanks very much

Thanks,
Raja

X002548
Not Just a Number

15586 Posts

Posted - 2012-03-28 : 11:53:01

Gotta run to a meeting..but here's a start



CREATE		-- GLOBAL TEMPORARY  
	TABLE T1 (C1 CHAR(1), C2 CHAR(1), C3 CHAR(1))
;

INSERT INTO T1(C1, C2, C3)
SELECT 'A', '1', 'N'	-- FROM SYSIBM.SYSDUMMY1
UNION ALL
SELECT 'B', '1', 'Y'	-- FROM SYSIBM.SYSDUMMY1
UNION ALL
SELECT 'B', '1', 'N'	-- FROM SYSIBM.SYSDUMMY1
UNION ALL
SELECT 'B', '2', 'N'	-- FROM SYSIBM.SYSDUMMY1
;

SELECT * FROM T1
 WHERE 
	  SELECT C1, C2
		FROM T1 o
	   WHERE EXISTS (SELECT * FROM T1 i1 WHERE i1.C1 = o.C1 AND i1.C2 = o.C2 AND i1.C3 = 'Y')
		 AND EXISTS (SELECT * FROM T1 i1 WHERE i1.C1 = o.C1 AND i1.C2 = o.C2 AND i1.C3 = 'N')
	GROUP BY C1, C2
	  HAVING COUNT(*) > 1)
;

Brett

8-)

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