A.Select * From Emp
B.Select * From Emp Where EmpNO Like '%%'
C.Select * From Emp Where Name = '%%'
D.Select * From Emp Where Name Like '%%'
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A.truncate table book
B.delete * from book
C.drop table book
D.delete from book
A.Update grade set score=score+5
B.Update grade set score=score+5 where score>=55 or score <=60
C.Update grade set score=score+5 where score between 55 and 60
D.Update grade set score=score+5 where score >=55 and score <=60
A.select top 1 * from book order by price asc
B.select top 1 * from book order by price desc
C.select top 1 * from book where price= (select max (price)from book)
D.select top 1 * from book where price= max(price)
A.select max(score) from grade
B.select top 1 score from grade order by score asc
C.Select min(score) from grade
D.select top 1 score from grade order by score desc
A.01053090A#Hm3?
B.01003090A01
C.01053090D09
D.0101A01
最新試題
MySQL變量可分為兩大類,即用戶變量和系統(tǒng)變量。
正常情況下一般刪除命令都會有帶WHERE子句。
MySQL 5.0存貯過程的優(yōu)勢是()
在以下選項中哪些屬于視圖的功能()
在MySQL中如果權(quán)限授予不合理,可以通過EVOKE ALL PRIVILEGES ON *.*FROM’username’@’localhost’來收回對所有數(shù)據(jù)庫的所有權(quán)限。
以下關(guān)于級聯(lián)刪除描述正確的是()
在MYSQL中,存儲過程不可以帶有參數(shù)。
mysql變量有4種類型:局部變量、用戶變量、會話變量和全局變量。
DELETE語句中使用JOIN子句執(zhí)行跨表刪除時,有INNER、LEFT、RIGHT即內(nèi)連接、左連接、右連接等不同的連接方式。
用戶可以超出權(quán)限控制對數(shù)據(jù)庫進(jìn)行訪問。