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

鉴于两个日期 startdate 01-02-16和 enddate 01-05-16。我需要从表中获取数据，以便返回 startdate 中最接近的过去日期与 enddate 最近的日期之间的所有数据，包括两个日期。所以结果会是这样的。

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少于最接近的 fromdate 并且大于最接近的 enddate

我想要什么

我想要的是在查询中执行此操作，这样我就不必每次都从表中获取整个数据。

Answer 1

如果您的列类型为date，请使用union执行此操作：

(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')

Demo Here

Answer 2

您的日期成像时间为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

试试这个

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Date是String，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)

MySQL选择大于或等于给定日期

表

4 个答案: