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
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select * from `test` where id between 3 and 7;等价于 select * from `test` where id>=3 and id<=7;-----------------------------------------------------------select * from `test` where id not between 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：
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between '2018-01-22' and '2018-01-30' |
开始日期从2018-01-22 00:00:00.0 开始， 到2018-01-29 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： 2018-01-29 23:45:35.0
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select * from test a where a.create_date between '2018-01-22' and '2018-01-30' order by a.create_date desc |
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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 20180128select * 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：
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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 ; |
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：
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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') |
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：
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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服务器之家。
原文链接：https://markix.blog.csdn.net/article/details/80365585
