A.“_”代表多個(gè)字符 B.“_”可以代表零個(gè)或多個(gè)字符 C.“_”不能與“%”一同使用 D.“_”代表一個(gè)字符
A.sqlplus逐個(gè)登陸每個(gè)RAC節(jié)點(diǎn)的實(shí)例,shutodwn實(shí)例。 B.lsnrctlstop停止對(duì)應(yīng)的監(jiān)聽(tīng)服務(wù) C.crs_stop命令停止對(duì)應(yīng)的數(shù)據(jù)庫(kù)服務(wù) D.srvctl命令停止對(duì)應(yīng)在數(shù)據(jù)庫(kù)服務(wù)
A.ORDER BY SALARY>5000 B.GROUP BY SALARY>5000 C.HAVING SALARY>5000 D.WHERE SALARY>5000