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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
? 1 2 3 4 5select
*
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:
? 1between
'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
? 1 2select
*
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:
? 1 2select
*
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:
? 1 2select
*
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:
? 1 2 3 4 5 6from_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。
原文链接:https://markix.blog.csdn.net/article/details/80365585