陆·模糊查询

模糊查询使用like关键字和通配符结合来实现，通配符具体含义如下：

%：代表匹配0个字符、1个字符或多个字符。
_：代表匹配有且只有1个字符。
[]：代表匹配范围内
[^]：代表匹配不在范围内

（1）查询姓刘的员工信息

select * from People  where PeopleName like '刘%'

（2）查询名字中含有 “ 尚 “ 的员工信息

select * from People  where PeopleName like '%尚%'

（3）显示名字中含有“尚”或者“史”的员工信息

select * from People  where PeopleName like '%尚%' or PeopleName like '%史%'

（4）查询姓刘的员工，名字是2个字

--方案一：
select * from People  where PeopleName like '刘_'
--方案二：
select * from People where SUBSTRING(PeopleName,1,1) = '刘' and LEN(PeopleName) = 2

（5）查询出名字最后一个字是香，名字一共三个字的员工信息

--方案一：
select * from People  where PeopleName like '__香'
--方案二：
select * from People where SUBSTRING(PeopleName,3,1) = '香' and LEN(PeopleName) = 3

（6）查询出电话号码开头138的员工信息

select * from People  where PeoplePhone like '138%'

（7）查询出电话号码开头138的员工信息,第4位可能是7，可能8 ，最后一个号码是5

select * from People where PeoplePhone like '138[7,8]%5'

（8）查询出电话号码开头133的员工信息,第4位是2-5之间的数字 ，最后一个号码不是2和3

-方案一：
select * from People where PeoplePhone like '133[2,3,4,5]%[^2,3]'
--方案二：
select * from People where PeoplePhone like '133[2-5]%[^2-3]'

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