考勤统计表sql 某个项目在某个月的考勤统计

得好好学学SQL，sql写的好就是不一样！存储过程我记得以前写过的，但是现在怎么不会了！后面抽空得学回来！

select personname,
               max(decode(Extract(day from kqrq), 1, property)) as day1,
               max(decode(Extract(day from kqrq), 2, property)) as day2,
               max(decode(Extract(day from kqrq), 3, property)) as day3,
               max(decode(Extract(day from kqrq), 4, property)) as day4,
               max(decode(Extract(day from kqrq), 5, property)) as day5,
               max(decode(Extract(day from kqrq), 6, property)) as day6,
               max(decode(Extract(day from kqrq), 7, property)) as day7,
               max(decode(Extract(day from kqrq), 8, property)) as day8,
               max(decode(Extract(day from kqrq), 9, property)) as day9,
               max(decode(Extract(day from kqrq), 10, property)) as day10,
               max(decode(Extract(day from kqrq), 11, property)) as day11,
               max(decode(Extract(day from kqrq), 12, property)) as day12,
               max(decode(Extract(day from kqrq), 13, property)) as day13,
               max(decode(Extract(day from kqrq), 14, property)) as day14,
               max(decode(Extract(day from kqrq), 15, property)) as day15,
               max(decode(Extract(day from kqrq), 16, property)) as day16,
               max(decode(Extract(day from kqrq), 17, property)) as day17,
               max(decode(Extract(day from kqrq), 18, property)) as day18,
               max(decode(Extract(day from kqrq), 19, property)) as day19,
               max(decode(Extract(day from kqrq), 20, property)) as day20,
               max(decode(Extract(day from kqrq), 21, property)) as day21,
               max(decode(Extract(day from kqrq), 22, property)) as day22,
               max(decode(Extract(day from kqrq), 23, property)) as day23,
               max(decode(Extract(day from kqrq), 24, property)) as day24,
               max(decode(Extract(day from kqrq), 25, property)) as day25,
               max(decode(Extract(day from kqrq), 26, property)) as day26,
               max(decode(Extract(day from kqrq), 27, property)) as day27,
               max(decode(Extract(day from kqrq), 28, property)) as day28,
               max(decode(Extract(day from kqrq), 29, property)) as day29,
               max(decode(Extract(day from kqrq), 30, property)) as day30,
               max(decode(Extract(day from kqrq), 31, property)) as day31
          from (select personname, kqrq, property
                  from view_person_projAttend
                 where 1 = 1
                   and projid = '421440'
                   and kqrq BETWEEN to_date('2010-10-01', 'yyyy-MM-dd') AND
                       to_date('2010-10-31', 'yyyy-MM-dd'))
         group by personname