counting data and grouping by week in mysql
this is my DB table: CREATE TABLE IF NOT EXISTS `inspection_report` ( `Inspection_datetime` datetime NOT NULL, `Line` char(5) NOT NULL, `S` int(11) NOT NULL, `A` int(11) NOT NULL, `B` int(11) NOT NULL, `C` int(11) NOT NULL, INSERT INTO `inspection_report` (`Inspection_datetime`,`Line`,`S`, `A`, `B`, `C`) VALUES ('2010-09-01 09:08:01','FA 05',0, 0, 0, 0),('2010-09-02 14:24:35','FA 07',0, 0, 1, 0),('2010-09-01 09:08:01','fa 05',0, 1, 1, 0),('2010-09-01 16:24:04','FA 03', 0, 1, 0, 0); I have a lot of data for this table.how do i do if i want show the result like: Line 1st week 2nd week 3rd week