Question

Example:

Columns:

id, date(mysql date), other fields....

Rows:

1, 2011-01-11
2, 2011-31-10
3, 2011-30-10
4, 2011-25-09
5, 2011-25-09
6, 2011-25-09
7, 2011-21-09

Mysql select statement to select the last date of every month in given rows… not just unique… if in a month the last date has more than 1 row then need to retrive all rows of that last date.

Considering the above example select statement should give the following result set

1, 2011-01-11
2, 2011-31-10
4, 2011-25-09
5, 2011-25-09
6, 2011-25-09

Answer 1

This will get you the right rows:

SELECT * 
FROM your_table 
WHERE date_col IN (
  SELECT MAX(date_col) 
  FROM your_table 
  GROUP BY MONTH(date_col)
)