how to compare 2 cols in 2 diff tables in sql

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Hi guys,

i was working on sql server 2008.

where i was comparing a column from one to another table,
which is not equal to one another.

n

my query, what i tried so far, is:

SELECT COUNT(i.ITMRQ) as vCount FROM tbl_itmrq i
inner join tbl_po p on p.Itmrq != i.ITMRQ

plz let me know, whether this one is correct or not.

thanks

Posted 9-Apr-14 6:16am

abdul subhan mohammed

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Peter Leow · Answer 1 · 2014-04-09T06:26:00

Solution 1

use not exists instead:

SQL

SELECT COUNT(i.ITMRQ) as vCount FROM tbl_itmrq i
WHERE NOT EXISTS
(SELECT * FROM tbl_po p WHERE p.Itmrq = i.ITMRQ)

refer: sql-exists[^]

Posted 9-Apr-14 6:26am

Peter Leow

Updated 9-Apr-14 6:27am

v2

Comments

Maciej Los 10-Apr-14 17:50pm

+5!

Peter Leow 12-Apr-14 7:39am

Thank you, Maciej.