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sql BEtwEEn 具体用法

可以hi我详谈.select case when score between 0 and 59 then '不及格' when score between 60 and 69 then '及格' when score between 70 and 79 then '良好' when score between 80 and 100 then '优秀' end from Student

between and 就是>= 和

字符串是按照位数一位位比较的或者把他们变成int型where cast(字段1 as int) between cast('500' as int) and cast('1000' as int)估计可以得到你要的效果

Persons 表:IdLastNameFirstNameAddressCity1AdamsJohnOxford StreetLondon2BushGeorgeFifth AvenueNew York3CarterThomasChangan StreetBeijing4GatesBillXuanwumen 10BeijingBETWEEN 操作符实例如需以字母顺序显示介于 "

是不2113是日期格式的不认5261?如果是char或4102varchar的要有日的信息,从1653select * from Gw_Jkda02 where CSRQ01 between '1942/10/01' and '1970/4/30';这样试试.如果字段是DATE格式回就转换成char型在答比,select * from Gw_Jkda02 where to_char(CSRQ01 ,'YYYY/MM/DD')between '1942/10/01' and '1970/04/30';

使用变量一般是在存储过程、方法、触发器等t-sql编程的时候用的,使用declare 来定义变量,在方法/存储过程/触发器等里面进行调用.

常用的情况:between:select * from [tablename] where [日期] between '2008-01-01' and '2008-10-31' --查询字段[日期]在2008-01-01(含)至2008-10-31(含)之间 表tablename的记录.in:1、select * from [tablename] where [日期] in ('2008-01-

作用: BETWEEN and操作符在 WHERE 子句中使用,作用是选取介于两个值之间的数据范围.范围: 操作符 BETWEEN AND 会选取介于两个值之间的数据范围.这些值可以是数值、文本或者日期.语法: SELECT column_name(s)

这是一个范围 不包括5和10的范围 如果是FROM和TO 那么就是包括起点和终点的范围了

select * from 表 where (produceyear between 12 and 13)and (produceweek between 11 and 12)

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