Question

I have to a table like this

Year Month
2012  8
2012  7
2012  4
2012  3
2011  7
2011  3
2011  1
2010  10
2010  9
2010  8

This tables show which month and year is remaning, now let say I have completed 2012, 7 month. Now I want to have list like

Year Month
    2012  8
    2012  4
    2012  3
    2011  7
    2011  3
    2011  1
    2010  10
    2010  9
    2010  8

I am using below query but this is not giving me the correct records

SELECT YEAR, MONTH from tablex
WHERE Year NOT IN (SELECT DISTINCT YEAR from OTHER_TABLE INNER JOIN Some_Other_Table)
AND  MONTH NOT IN (SELECT DISTINCT MONTH FROM OTHER_TABLE INNER JOIN Some_Other_Table)

When OTHER_TABLE is null then I am getting the currect count, but when Other table has year 2012 and month 7 I am getting no results.

P.S.: There is no joining columns available for tablex and OTHER_TABLE and Som_Other_Table

Answer 1

You just have to use NOT EXISTS:

SELECT YEAR, MONTH 
from tablex t1 
WHERE NOT EXISTS
(
    SELECT 1 FROM OTHER_TABLE t2
    WHERE t2.Year = t1.Year AND t2.Month = t2.Month 
)