select c.*,d* from ( select 图号 from ( SELECT a.*,b.存货编码 FROM 未明图号 as a left OUTER JOIN 存select c.*,d* from ( select 图号 from (SELECT a.*,b.存货编码FROM 未明图号 as a left OUTER JOIN 存货档案 as bON a.图号=b.规

select c.*,d* from ( select 图号 from ( SELECT a.*,b.存货编码 FROM 未明图号 as a left OUTER JOIN 存select c.*,d* from ( select 图号 from (SELECT a.*,b.存货编码FROM 未明图号 as a left OUTER JOIN 存货档案 as bON a.图号=b.规 一个SQL语言,关于ANY 和ALL Q1:SELECT a FROM R WHERE b>= ANY (SELECT d FROM S WHERE c>10);Q2:SELECT a FROM R WHERE b>= ALL(SELECT d FROM S WHERE c>10);(A) Q1和Q2产生的结果一样; (B) Q1的结果总是包含Q2的结果;(C) Q2的结果总是 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 select a from dbo.A where c=1 intersect selcet b from dbo.B where d=1求它的行个数怎么附加count函数 select * from book limit , select A from B where C=‘D’and E=‘F’ 如果 F=null 则把E='F' 换成 M='N'select A from B where C=‘D’and M=‘N’ 求写成一个select语句 用的是DB2数据库 C和E都是主keyselect A from B where C=‘D’and E=nvl(‘F’,E) and if we want to retrieve data from the database with SQL,we should use the comand of ( )A、select B、update C、delete D、insert You can ___the one that you like best from these style A,elect B,take C,select D,pick请问这四个选项的区别是什么 select A,B,C,D=(select count(*) from 表 where c=a.a and b=a.b) from 表 a请问上面语句where c=a.a and b=a.b) from 表 a 中的a,b,c代表什么呢? select count(c) from (select b from TUserBankLogSum b group by b.tid) as c 这条hql是错的按照这个意思应该怎么写 select * from a union select * from b 能详细说下么 select from 表 和select from [表]有什么不同? sql中left join from 多个表怎么写select * from a,b,c,d LEFT JOIN e on e.id=a.id left join f on f.id=c.id现在这句是错的,怎么写才正确 select count(*) from 怎么使用 select count(1) from emp select * into dept2 from dept oracle查询语句 select a||','||b||','||c from table where a in('m','n') 根据SQL:select a.a,a.b,a.c,b.c,b.d,b.f from a LEFT OUT JOIN b ON a.a = b.c写出右外连接