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

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 case when then else end if (pastart = -1) sql.append(select * from(); sql.append(select nid,sname,sdescription,nprice,sif (pastart = -1)sql.append(select * from();sql.append(select nid,sname,sdescription,nprice,simg,(CASE smctag WHEN '0' THEN '有货'WHEN '1' THEN ' 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 SQL中Case When Then的用法.我想把Case When用在Where里,例如：如果R.conclusion='N'那么R.result的选择条件为'A'或'B'.WhereR.result in (case when R.conclusion = 'N' then ('A','B) End)这个写法总是报错说没有右括号.有什 sql语句 case when or 自己写的sqlselect date_format(createDate,'%Y-%m-%d') as createDate,count(case when reqtype='runUp' then imei end) as runUp,count(case when (reqtype='login' or reqtype='register') then imei end) as loginFROM (select distinct sql case when 老是语法报错,请问语法哪错了?SELECT zhu.mingzi,zhu.riqi,zhu.liucheng,zhu.xinghao,zhu.shuliang,casewhen [liucheng] = '点装' then '1'when [liucheng] = '装脚' then '2'when [liucheng] = '只装' then '3'when [liucheng] = ' 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 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. CASE a WHEN 1 THEN b ELSE NULL END 请问下面这段代码sql=id is not null和下面的sql=sql& and……怎么理解?select case request(eeeet)case print_csql=id is not nullif request(ClientCountry)全部 then'国家/地区不为全部时sql=sql& and ClientCountry='& --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 在SQL中可以使用MAX函数取两个数中较大的一个数吗?譬如取出A和B中较大的那一个,可以这样写吗?select max(a,b) from table如果不行,应该怎么用max 不用case when then ruby,一个简单的case when结构语句(1..100).each do |i|case i % 15when 0 ; then puts like 0when 3,6,9,12 ; then puts like 3when 5,10 ; then puts like 5endend我除了第一句的for循环明白外,就不太懂后面的case when了,还有 SQL语句case whenselect trunc(date '2009-01-01','dd') as date_id, b.org_id as org_id, b.risk_id as risk_id, sum(a.planfee-nvl(c.payreffee,0)) , (case when to_char(statistic_date-payrefdate>=0) and to_char(st 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