例如。
本月是2012年12月,据我们所知,2012年这个月的所有星期日都是2,9,16,23,30。
任何人都可以告诉我如何在一个月内使用mysql查询获得如下所示的星期日的所有日子?
_ _ _ _ _ _
| Sundays |
|- - - - - -|
| 2 |
| 9 |
| 16 |
| 23 |
| 30 |
- - - - - -
答案 0 :(得分:2)
select DATE_ADD('2012-12-01', INTERVAL ROW DAY) as Date,
row+1 as DayOfMonth from
(
SELECT @row := @row + 1 as row FROM
(select 0 union all select 1 union all select 3
union all select 4 union all select 5 union all select 6) t1,
(select 0 union all select 1 union all select 3
union all select 4 union all select 5 union all select 6) t2,
(SELECT @row:=-1) t3 limit 31
) b
where
DATE_ADD('2012-12-01', INTERVAL ROW DAY)
between '2012-12-01' and '2012-12-31'
and
DAYOFWEEK(DATE_ADD('2012-12-01', INTERVAL ROW DAY))=1