A.SELECT Product Name AS’產(chǎn)品的名稱’，Unit Price  AS’單價(jià)’FROM Products
B.SELECT Product Name=產(chǎn)品的名稱，Unit Price=單價(jià)FROM Products
C.SELECT Product Name=“產(chǎn)品的名稱”，Uni tPrice=“單價(jià)”FROM Products
D.SELECT Product Name’產(chǎn)品的名稱’，Unit Price’單價(jià)’FROM Products

A.SELECT productname，price from products order by price ASC
B.SELECT productname，price from products order by price DESC
C.SELECT productname，price from products order by price
D.SELECT productname and price from products order by price DESC

A.select * from table_name where 1<=2
B.truncate table table_name
C.delete from table_name where null=null
D.alter table table_name add column idd int

A.HAVING子句必須與GROUPBY子句同時(shí)使用，不能單獨(dú)使用
B.使用HAVING子句的同時(shí)不能使用WHERE子句
C.使用HAVING子句的同時(shí)可以使用WHERE子句
D.使用HAVING子句的作用是限定分組的條件

A.INSERT
B.SELECT
C.CREATEVIEW
D.FOR