mysql中between的边界,范围说明
mysql between的边界范围
between 的范围是包含两边的边界值
eg: id between 3 and 7 等价与 id >=3 and id<=7
not between 的范围是不包含边界值
eg:id not between 3 and 7 等价与 id < 3 or id>7
SELECT * FROM `test` where id BEТWEEN 3 and 7;
等价于 SELECT * FROM `test` where id>=3 and id<=7;
———————————————————–
SELECT * FROM `test` where id NOT BEТWEEN 3 and 7;
等价于 SELECT * FROM `test` where id<3 or id>7;
mysql between日期边界的问题留意
边界问题:
mysql, between 开始日期 AND 结束日期 包含开始日期,不包含结束日期
例如:
BEТWEEN ‘2022-01-22’ AND ‘2022-01-30’开始日期从2022-01-22 00:00:00.0 开始, 到2022-01-29 23:59:59.59结束
表中的CREATE_DATE 是varchar(21) DEFAULT NULL COMMENT ‘时间’,
CREATE_DATE中保存值是: 年-月-日 时:分:秒:0 例如: 2022-01-29 23:45:35.0
SELECT * FROM Test a WHERE a.CREATE_DATE BEТWEEN ‘2022-01-22’ AND ‘2022-01-30’
ORDER BY a.CREATE_DATE desc
SELECT * FROM TABEL a WHERE a.CREATE_DATE BEТWEEN ‘2022-01-22’ AND ‘2022-01-30’
ORDER BY a.CREATE_DATE desc
2022-01-29 23:45:35.0 20220129
2022-01-29 23:45:33.0 20220129
2022-01-29 00:10:58.0 20220129
2022-01-29 00:10:45.0 20220129
2022-01-28 23:42:23.0 20220128
2022-01-28 23:39:39.0 20220128
SELECT * FROM TABEL a WHERE a.CREATE_DATE BEТWEEN ‘2022-01-22’ AND ‘2022-01-29’
ORDER BY a.CREATE_DATE desc
2022-01-28 23:42:23.0 20220128
2022-01-28 23:39:39.0 20220128
2022-01-28 00:13:22.0 20220128
2022-01-28 00:13:19.0 20220128
2022-01-27 23:23:02.0 20220127
2022-01-22 00:09:59.0 20220122
2022-01-22 00:09:56.0 20220122
2022-01-22 00:01:53.0 20220122
遇到的其他问题:
遇到另外一张表 test2 有保存时间的字段: `REPORTTIME` varchar(45) DEFAULT NULL,
这个字段保存的值是:
例子1:
select * from bips_hpd_helpdesk a WHERE str_to_date(from_unixtime(a.REPORTTIME,’%Y-%m-%d’),’%Y-%m-%d’)
BEТWEEN ‘2022-01-16’ AND ‘2022-01-27′ ORDER BY from_unixtime(a.REPORTTIME,’%Y-%m-%d’) DESC ;
结果1:
从结果中,可以看到取到了27号的数据,可能是处理的时间没有 小时,分钟,秒。
例子2:
select * from bips_hpd_helpdesk a WHERE str_to_date(from_unixtime(a.REPORTTIME,’%Y-%m-%d’),’%Y-%m-%d’)
BEТWEEN str_to_date(‘2022-01-16′,’%Y-%m-%d’) AND str_to_date(‘2022-01-27′,’%Y-%m-%d’)
结果2:
找到问题: 毫秒值转换为时间,发现这里保存的毫秒值,没有保存时分秒:
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’)
BEТWEEN str_to_date(‘2022-01-16′,’%Y-%m-%d %h:%i:%s’) AND str_to_date(‘2022-01-27 %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 ;
查看到的时间值:
以上为个人经验,希望能给大家一个参考,也希望大家多多支持共生网络。
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