作业帮case when then else end
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/16 07:55:21
x)KN,NU(HS(9@nj^MR>N9;:SsRKsS.tBXyqjDKR~%D)!Z. ҮVP\RWװtF^Νt1TɎp13؋FmO5#l_c_\g* s
case when then else end
case when then else end
case when then else end
select name 姓名,case sex when boy then 男 else 女 end from student.
select name 姓名,case age when 20 then 青年 when 30 then 中年 when 60 then 老年 else 其它 end from age_tbl
case when then else end
CASE a WHEN 1 THEN b ELSE NULL END
--简单Case函数 CASE sex WHEN '1' THEN '男' WHEN '2' THEN '女' ELSE '其他' END --Case搜索函数 CASE请问这两种用法有什么区别,分别在什么情况下使用?--简单Case函数 CASE sex WHEN '1' THEN '男' WHEN '2' THEN '女' ELSE
case when.then.else.endSQL实现如下功能用case when...then...else.end 实现当A=1时,那么B=1,否则B=0;C=0,否则C=1
SUM(CASE WHEN ISNULL(A.ReceiveQty,0)>0 THEN 1 ELSE 0 END) AS SumReceiveRolls是什么意思?在储存过程中,这句是什么意思SUM(CASE WHEN ISNULL(A.ReceiveQty,0)>0 THEN 1 ELSE 0 END) AS SumReceiveRolls,
这段文字的意思update student set grade = ( select grade from ( select id, case when score> 90 then 'a' when score > 80 then 'b' when score > 70 then 'c' else 'd' end grade from student ) a
case when then else end 能用在条件判断上么比如select * from app a where --在这加case when 可以么?select * from app a where case when a.id = 1 then a.name = '22' else a.name = '33'
CASE WHEN LEN(GY_YGDM.YSSFZH)>0 THEN left(CAST(GY_YGDM.YSSFZH AS VARCHAR(32)),18) ELSE '-' END AS s求详解
sql case when then ...虚心求教select case salarywhen 5000 then '高薪'when 4500 then '中薪'when 3500 then '中低薪'else 'null'end as '工资等级' from telenolist我想统计各个工资级别的人数 那个count(*)应该放在语句的哪
(case A.ZT when 1 then 's318' else null end)SELECT A.*,CONVERT(NVARCHAR(50),B.JJRQ,23) AS JJRQ FROM BXX A,JJD B where A.JJDBH=B.JJDBH and A.BZBH='YZ1-81-01' and A.SMARBH = (case A.ZT when 1 then 's318' else null end) ORDER BY B.JJRQ,A.BZBHA.SMARBH =
这是什么SQL语法啊,从未见过,以下是全文select sc.cid as 课程ID,course.name as 课程名,SUM(CASE WHEN score BETWEEN 85 AND 100 THEN 1 ELSE 0 END) AS [100 - 85],SUM(CASE WHEN score BETWEEN 70 AND 85 THEN 1 ELSE 0 END) AS [85-70],SUM(CA
select * top 99 percent from 职工 order by case when 工资 is null then 1 else 0 end 哪里出错了select * top 99 percent from 职工 order by case when 工资 is null then 1 else 0 end为什么总说有不能识别的短语或关键字
这语句什么意思select * from [Feedbacks] where QId=3 order by case when QId=3 then 1 else 2 end,QId这个语句什么意思select * from [Feedbacks] where QId=3 order by case when QId=3 then 1 else 2 end,QId
select CNAME=case when CNAME is null then '4' else '1' end from SMPTEL where SMPTEL.Newtel='1585'select CNAME=case when CNAME is null then '456' else '123' end from SMPTEL where SMPTEL.Newtel='158'Newtel 没有158 如何让其显示 456现在
c#开发cast( (case when b.pbproject_ID is null then 1 else 0 end) as bit ) as if (Convert.ToBoolean(this.grvQuery.GetDataRow(i)[xz]) == true){selected = true;}上面那个是条件
SQL server中哪些语句中运用逻辑表达式?请回答除了：where ,if（else if）,while,case when..then..,having,on越多越好,最好能有简单例子.
if-then-else是什么意思
sql case when请教请教sql中case when 判断语句select 姓名,工龄,(case when (工龄>= '35') then 90%when (工龄>='30' and 工龄='20' and 工龄='10' and 工龄