mysql中between的邊界,范圍說(shuō)明

更新時(shí)間：2021年06月08日 14:34:33 作者：markix

這篇文章主要介紹了mysql中between的邊界，范圍說(shuō)明，具有很好的參考價(jià)值，希望對(duì)大家有所幫助。如有錯(cuò)誤或未考慮完全的地方，望不吝賜教

mysql between的邊界范圍

between 的范圍是包含兩邊的邊界值

eg： id between 3 and 7 等價(jià)與 id >=3 and id<=7

not between 的范圍是不包含邊界值

eg：id not between 3 and 7 等價(jià)與 id < 3 or id>7

SELECT * FROM `test` where id BETWEEN 3 and 7;
等價(jià)于 SELECT * FROM `test` where id>=3 and id<=7;
-----------------------------------------------------------
SELECT * FROM `test` where id NOT BETWEEN 3 and 7;
等價(jià)于 SELECT * FROM `test` where id<3 or id>7;

mysql between日期邊界的問(wèn)題留意

邊界問(wèn)題：

mysql， between 開(kāi)始日期 AND 結(jié)束日期包含開(kāi)始日期，不包含結(jié)束日期

例如：

BETWEEN '2018-01-22' AND  '2018-01-30'

開(kāi)始日期從2018-01-22 00:00:00.0 開(kāi)始，到2018-01-29 23:59:59.59結(jié)束

表中的CREATE_DATE 是varchar(21) DEFAULT NULL COMMENT '時(shí)間',

CREATE_DATE中保存值是：年-月-日時(shí)：分：秒：0 例如： 2018-01-29 23:45:35.0

SELECT *  FROM  Test  a WHERE  a.CREATE_DATE BETWEEN '2018-01-22' AND  '2018-01-30'   
ORDER BY a.CREATE_DATE desc

SELECT *  FROM TABEL a WHERE  a.CREATE_DATE BETWEEN '2018-01-22' AND  '2018-01-30'   
ORDER BY a.CREATE_DATE desc
    2018-01-29 23:45:35.0    20180129
    2018-01-29 23:45:33.0    20180129
    2018-01-29 00:10:58.0    20180129
    2018-01-29 00:10:45.0    20180129
    2018-01-28 23:42:23.0    20180128
    2018-01-28 23:39:39.0    20180128
SELECT *  FROM TABEL a WHERE  a.CREATE_DATE BETWEEN '2018-01-22' AND  '2018-01-29'   
ORDER BY a.CREATE_DATE desc
    2018-01-28 23:42:23.0    20180128
    2018-01-28 23:39:39.0    20180128
    2018-01-28 00:13:22.0    20180128
    2018-01-28 00:13:19.0    20180128
    2018-01-27 23:23:02.0    20180127
    2018-01-22 00:09:59.0    20180122
    2018-01-22 00:09:56.0    20180122
    2018-01-22 00:01:53.0    20180122

遇到的其他問(wèn)題：

遇到另外一張表 test2 有保存時(shí)間的字段： `REPORTTIME` varchar(45) DEFAULT NULL,

這個(gè)字段保存的值是：

例子1：

select *  from bips_hpd_helpdesk a WHERE  str_to_date(from_unixtime(a.REPORTTIME,'%Y-%m-%d'),'%Y-%m-%d') 
BETWEEN '2018-01-16' AND '2018-01-27' ORDER BY from_unixtime(a.REPORTTIME,'%Y-%m-%d') DESC ;

結(jié)果1：

從結(jié)果中，可以看到取到了27號(hào)的數(shù)據(jù)，可能是處理的時(shí)間沒(méi)有小時(shí)，分鐘，秒。

例子2：

select *  from bips_hpd_helpdesk a WHERE  str_to_date(from_unixtime(a.REPORTTIME,'%Y-%m-%d'),'%Y-%m-%d') 
BETWEEN str_to_date('2018-01-16','%Y-%m-%d') AND str_to_date('2018-01-27','%Y-%m-%d')

結(jié)果2：

找到問(wèn)題：毫秒值轉(zhuǎn)換為時(shí)間，發(fā)現(xiàn)這里保存的毫秒值，沒(méi)有保存時(shí)分秒：

from_unixtime(a.REPORTTIME,'%Y-%m-%d') AS reportTime,a.REPORTTIME,  
             str_to_date(from_unixtime(a.REPORTTIME,'%Y-%m-%d'),'%Y-%m-%d %h:%i:%s') AS reportTime22
        FROM test  a WHERE  str_to_date(from_unixtime(a.REPORTTIME,'%Y-%m-%d'),'%Y-%m-%d %h:%i:%s') 
        BETWEEN str_to_date('2018-01-16','%Y-%m-%d %h:%i:%s') AND str_to_date('2018-01-27 %h:%i:%s','%Y-%m-%d')
     #subdate(curdate(),date_format(curdate(),'%w')-1) AND subdate(curdate(),date_format(curdate(),'%w')-8)
        ORDER BY from_unixtime(a.REPORTTIME,'%Y-%m-%d') DESC ;

查看到的時(shí)間值：