我有一个日期列表,我希望在我的应用程序的calendarwidget中启用它们。日历小部件允许我仅提供需要禁用的日期列表。
我可以将上述日期转换为2015-3-6,2015-3-8,2015-3-7,2015-5-4,2015-5-7,2015-5-12,2015 -6-16,2015-7-2,2015-10-19
但我需要在上述格式的日历中预计上述日期的其余日期。我不知道怎么弄。任何想法如何实现这一点真的很感激
答案 0 :(得分:1)
表格强>
CREATE TABLE Available
(`IsAvailable` datetime);
INSERT INTO Available
(`IsAvailable`)
VALUES
('2015-03-06 00:00:00'), ('2015-03-08 00:00:00'),
('2015-03-07 00:00:00'), ('2015-05-04 00:00:00'),
('2015-05-07 00:00:00'), ('2015-05-12 00:00:00'),
('2015-06-16 00:00:00'), ('2015-07-02 00:00:00'),
('2015-10-19 00:00:00');
<强> SQL Fiddle Demo 强>
select y2015.selected_date,
IF(Available.`IsAvailable` IS NULL, FALSE, TRUE) as Available
from
(select adddate('2015-01-01', t2.i*100 + t1.i*10 + t0.i) selected_date
from
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t0,
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t1,
(select 0 i union select 1 union select 2 union select 3 union select 4 union select 5 union select 6 union select 7 union select 8 union select 9) t2
) y2015
LEFT JOIN Available
ON y2015.selected_date = Available.`IsAvailable`
where y2015.selected_date < '2016-01-01'
<强>输出强>
| selected_date | Available |
|---------------|-----------|
| 2015-03-06 | 1 | \
| 2015-03-08 | 1 | \
| 2015-03-07 | 1 | |
| 2015-05-04 | 1 | \
| 2015-05-07 | 1 | / Those are in Avaliable table
| 2015-05-12 | 1 | |
| 2015-06-16 | 1 | |
| 2015-07-02 | 1 | /
| 2015-10-19 | 1 | /
| 2015-01-01 | 0 |
| 2015-01-02 | 0 |
| 2015-01-03 | 0 |
| 2015-01-04 | 0 |
| 2015-01-05 | 0 |
| 2015-01-06 | 0 |
| 2015-01-07 | 0 |
....
| 2015-12-31 | 0 |
Record Count: 365;