MySQL選擇哪里列大於或等於給定日期的最近過去日期

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

給定兩個日期起始日期 16年1月2日日期和結束日期 16年1月5日。 我需要從表中，使得它返回從開始日期最接近過去的日期和結束日期 ，包括兩個日期最近的未來日期之間的所有數據獲得的數據。 因此結果將如下所示。

Result:

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

我在做什么

我現在正在做的是獲取整個數據並從數組中刪除結果，其結果小於最接近的起始日期，而大於最接近的終止日期

我想要的是

我想要在查詢本身中執行此操作，這樣就不必每次都從表中獲取整個數據。

Answer 1

如果列的類型為date ，則使用union可以做到這一點：

(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')

在這里演示

Answer 2

成像日期為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

嘗試這個

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

如果日期為字符串，則可以在此處使用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)