Question

Below is my mysql table:

--------------------------
ID  Date_From   Date_To
--------------------------
1   2011-02-01  2011-02-28
2   2012-09-01  2012-09-30
3   2012-10-01  2012-10-30
4   2012-11-01  2012-11-30
5   2012-12-01  2012-12-30
6   2013-01-01  2013-01-30
7   2014-03-01  2014-03-31

I have this mysql statement:

SELECT *
FROM TIME_PERIOD
WHERE
  (YEAR(DATE_FROM) >= '2012' AND MONTH(DATE_FROM) >= '10')
  AND (YEAR(DATE_TO) <= '2013' AND MONTH(DATE_TO) <= '12');

which returns only the records with ID 3, 4, and 5. What Im expecting to return are records with ID 3, 4, 5, and 6.

Please help.

Answer 1

You need to use query like this:

SELECT * FROM TIME_PERIOD WHERE 
(YEAR(DATE_FROM) >= '2013' OR (YEAR(DATE_FROM) >= '2012' AND
 MONTH(DATE_FROM) >= '10')) AND 
(YEAR(DATE_TO) <= '2013' AND MONTH(DATE_TO) <= '12');