單項(xiàng)選擇題
A.select ID from wg B.show ID from wg C.select * from student group by ID D.show * from wg
A.select * from ds.phones where Brand="華為"and model="P20" B.select * from ds.phones where Brand="華為"or model="P20" C.select * from ds.phones where having"華為"and"P20" D.select * from ds.phones where having"華為"or"P20"
A.where B.group by C.order by D.limit
判斷題
多項(xiàng)選擇題
A.使用mysqldump命令備份 B.直接備份數(shù)據(jù)庫的文件 C.備份mysql數(shù)據(jù)庫的源碼包 D.備份mysql的慢日志
A.表達(dá)式 B.邏輯關(guān)系值 C.表 D.數(shù)據(jù)庫