MySQL选择哪里列大于或等于给定日期的最近过去日期

Question

表

Table:

Id             Date
1            01-10-15
2            01-01-16
3            01-03-16
4            01-06-16
5            01-08-16

给定两个日期起始日期 16年1月2日日期和结束日期 16年1月5日。 我需要从表中，使得它返回从开始日期最接近过去的日期和结束日期 ，包括两个日期最近的未来日期之间的所有数据获得的数据。 因此结果将如下所示。

Result:

Id             Date
2            01-01-16
3            01-03-16
4            01-06-16

我在做什么

我现在正在做的是获取整个数据并从数组中删除结果，其结果小于最接近的起始日期，而大于最接近的终止日期

我想要的是

我想要在查询本身中执行此操作，这样就不必每次都从表中获取整个数据。

Answer 1

如果列的类型为date ，则使用union可以做到这一点：

(select * from yourtable where `date` <= '2016-01-02' order by `date` desc limit 1)
-- This query will get record which is closest past date from startdate
union
(select * from yourtable where `date` => '2016-01-05' order by `date` asc limit 1)
-- This query will get record which is closest future date from enddate
union
(select * from yourtable where `date` between '2016-01-02' and '2016-01-05')

在这里演示

Answer 2

成像日期为YYYY-mm-dd

## get rows within the dates
SELECT * FROM tab WHERE ymd BETWEEN :start_date AND :end_date
## get one row closest to start date

UNION
SELECT * FROM tab WHERE ymd < :start_date ORDER BY ymd DESC LIMIT 1
## get one row closest to end date

UNION
SELECT * FROM tab WHERE ymd > :end_date   ORDER BY ymd      LIMIT 1

Answer 3

尝试这个

Select *
From 
    dTable 
Where 
     [Date] 
Between 
       (Select 
              Max(t1.Date) 
        From 
            dTable t1 
        Where 
             t1.date <startdate) And    
       (Select 
              Min(t2.Date) 
        From 
             dTable t2 
        Where 
             t2.date >enddate)

Answer 4

如果日期为字符串，则可以在此处使用STR_TO_DATE和DATEDIFF。

SELECT  id,  Date
FROM tab
where
STR_TO_DATE(Date, '%d-%m-%y') BETWEEN('2016-02-01')AND('2016-05-01')
or 
id = (SELECT id FROM tab
where STR_TO_DATE(Date, '%d-%m-%y') > '2016-05-01'
ORDER BY DATEDIFF(STR_TO_DATE(Date, '%d-%m-%y'), '2016-05-01') Limit 1)
or 
id = (SELECT id FROM tab
where STR_TO_DATE(Date, '%d-%m-%y') < '2016-02-01'
ORDER BY DATEDIFF('2016-02-01', STR_TO_DATE(Date, '%d-%m-%y')) Limit 1)