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 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 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 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 PLSQL中,select case..when..then..怎么用?最好写个式子出来,一看就能懂的那种, 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 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 when then else 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='& 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 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文的where中使用case when有这样一段sql文.select B.bCol_1,B.bCol_2,C.cCol_1from TBL_B B left join TBL_C Con B.bCol_Key = C.cCol_Keywhere B.bCol_Time < 'xxxx'现在需要扩展功能,就是只有当表B.bCol_Flag=0时,where的条件改为C CASE a WHEN 1 THEN b ELSE NULL END 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 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, SQL中like的用法 SQL 中with的用法