在student表上创建view_stu视图,正确的语句是( )。
A: CREATE VIEW view_stu IS SELECT * FROM student;
B: CREATE VIEW view_stu AS SELECT * FROM student;
C: CREATE VIEW view_stu SELECT * FROM student;
D: CREATE VIEW SELECT * FROM student AS view_stu;
A: CREATE VIEW view_stu IS SELECT * FROM student;
B: CREATE VIEW view_stu AS SELECT * FROM student;
C: CREATE VIEW view_stu SELECT * FROM student;
D: CREATE VIEW SELECT * FROM student AS view_stu;
举一反三
- 下列哪条语句可以创建视图( )。 A: create view v_student as select * from student; B: alter view v_student as select * from student; C: drop view v_student as select * from student; D: sp_help view v_student as select * from student;
- 以下创建视图的语句中,正确的是 A: CREATE st_view AS SELECT sid,sname,ssex FROM stu B: CREATE VIEW st_view SELECT sid,sname,ssex FROM stu C: CREATE VIEW st_view AS sid,sname,ssex FROM stu D: CREATE VIEW st_view AS SELECT sid,sname,ssex FROM stu
- 下面定义视图的SQL语句，哪一个是错误的？（ ） A: create view VIEW1 as select id,name,sex from users B: create view VIEW2 as select count(*) as studentTotal,classname from student C: create view VIEW3 as select name,price from D: create view VIEW4 as select logdate,price,1.1*parice as ‘涨价’ from shop
- 以下是修改视图的语句是 A: create or replace view st1 as select* from student; B: alter view st1 as select name from student join class on student.cid=class.id; C: alter table st1 modify class int(3); D: create or replace table st1 as select* from student;
- 建立信息系统学生的视图是（） A: CREATE VIEW is_student AS SELECT sno,sname,sage FROM student WHERE sdpt='is'; B: CREATE VIEW is_student SELECT sno,sname,sageFROM WHERE sdpt='is'; C: CREATE VIEW is_student AS select sno,sname,sage FROM WHERE sdpt='is' D: CREATE VIEW is_student AS SELECT sno,sname,sage WHERE sdpt='is';