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Transact-SQL (2000)

How to join in the same table?

Author

Topic

chungpn
Starting Member

8 Posts

Posted - 2009-04-28 : 21:28:29

I have a sql server table contains this data:

EmpCode Month Year Field1 Field2
---------------------------------------------------------------------------------------
QT351 April 2009 45 23
QT351 March 2009 67 43
QT555 March 2009 67 12
QT555 April 2009 54 32
QT351 April 2008 45 23
QT555 March 2007 67 12
--------------------------------------------------------------------------------------
Can you please help me to write a Transact-SQL command to get records from the table where field1 in Arpril but Field2 in March like this result:
EmpCode Month Year Field1 Field2
---------------------------------------------------------------------------------------
QT351 April 2009 45 43
QT555 April 2009 54 12
--------------------------------------------------------------------------------------

khtan
In (Som, Ni, Yak)

17689 Posts

Posted - 2009-04-28 : 21:35:08

use table alias


select a.EmpCode, a.Month, a.Year, a.Field1, m.Field2
from   table1 a inner join table1 m
       on  a.EmpCode = m.EmpCode
       and a.Year    = m.Year
where  a.Month = 'April'
and    m.Month = 'March'

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

chungpn
Starting Member

8 Posts

Posted - 2009-05-13 : 21:28:08

quote:

Originally posted by khtan

use table alias


select a.EmpCode, a.Month, a.Year, a.Field1, m.Field2
from   table1 a inner join table1 m
       on  a.EmpCode = m.EmpCode
       and a.Year    = m.Year
where  a.Month = 'April'
and    m.Month = 'March'

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

Thank you khtan. This solve my problem.

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