单选题:通过 SQL,下列( )语句是从 Persons 表中选取所有的列。
通过 SQL,下列( )语句是从 Persons 表中选取所有的列。
A.SELECT [all] FROM Persons
B.SELECT Persons
C.SELECT * FROM Persons
D.SELECT *.Persons
答案:C
A.SELECT [all] FROM Persons
B.SELECT Persons
C.SELECT * FROM Persons
D.SELECT *.Persons
答案:C