select count(distinct b) from X_info where c=1;能放到一个CASE内么 不

select count(distinct b) from X_info where c=1;能放到一个CASE内么 不 select A,B,C,D=(select count(*) from 表 where c=a.a and b=a.b SQL语句理解 select * from B where (select count(1) as num from A select count(c) from (select b from TUserBankLogSum b group 这个能合并成一句吗?select count(ITEMKIND) from ITEM where ITEMKIND='1 select distinct A.* from A,B where A.id = B.g_id and A.fwzid select telnum,count(0),count(distinct othertelnum) from nmk. select * from order where clientNo in (select distinct(clien select count(*) from v$process a,v$session b where a.addr = SQL >select count(*) from Teacher where teacherCode=? and te select count(*) as total from ddcm_news where key=a SELECT COUNT(*) FROM Users WHERE Id={0} AND LoginPwd = '{1}'