A.input B.out C.inout D.in
執(zhí)行如下兩個(gè)查詢,結(jié)果為() Select ename name,sal salary from emp order by salary Select ename name,sal“salary”from emp order by sal asc
A.兩個(gè)查詢結(jié)果完全相同 B.第一個(gè)查詢正確,第二個(gè)查詢錯(cuò)誤 C.兩個(gè)查詢結(jié)構(gòu)不同 D.第二個(gè)查詢正確,第一個(gè)查詢錯(cuò)誤
A.abstract set B.hash set C.linked hash set D.tree set