2.删除视图VIEW1的语句应该是____。 A: DROP VEIW1 B: ALTER VEIW1 C: DROP VIEW VIEW1 D: ALTER VIEW VIEW1
2.删除视图VIEW1的语句应该是____。 A: DROP VEIW1 B: ALTER VEIW1 C: DROP VIEW VIEW1 D: ALTER VIEW VIEW1
删除视图view1的正确语句是() A: delete view1 B: truncat view1 C: drop view1 D: drop view view1
删除视图view1的正确语句是() A: delete view1 B: truncat view1 C: drop view1 D: drop view view1
以下代码: <block wx:if="{{true}}"> <view>view1</view> <view>view2</view> </block> 的输出结果为
以下代码: <block wx:if="{{true}}"> <view>view1</view> <view>view2</view> </block> 的输出结果为
以下代码:block wx:if={{true}} viewview1/view viewview2/view/block的输出结果为( ) A: view1 B: view2 C: view1和view2 D: 没有输出
以下代码:block wx:if={{true}} viewview1/view viewview2/view/block的输出结果为( ) A: view1 B: view2 C: view1和view2 D: 没有输出
以下为删除名为view1视图的SQL语句: ______ view view1; 横线处填空,全部小写。
以下为删除名为view1视图的SQL语句: ______ view view1; 横线处填空,全部小写。
下面的语句按顺序成功执行后 CREATE TABLE tab1 (c1 CHAR(1))INSERT INTO tab1 VALUES ('b')CREATE VIEW view1 AS SELECT c1 FROM tab1 WHERE c1 ='a'INSERT INTO view1 VALUES ('a')INSERT INTO tab1 VALUES ('b')执行SELECT c1 FROM tab1可以选择出多少条记录?( ) A: 0 B: 1 C: 2 D: 3
下面的语句按顺序成功执行后 CREATE TABLE tab1 (c1 CHAR(1))INSERT INTO tab1 VALUES ('b')CREATE VIEW view1 AS SELECT c1 FROM tab1 WHERE c1 ='a'INSERT INTO view1 VALUES ('a')INSERT INTO tab1 VALUES ('b')执行SELECT c1 FROM tab1可以选择出多少条记录?( ) A: 0 B: 1 C: 2 D: 3
触发器在执行时,会产生两个特殊的表,它们是( )。 A: deleted,inserted B: delete,insert C: view,table D: view1,table1
触发器在执行时,会产生两个特殊的表,它们是( )。 A: deleted,inserted B: delete,insert C: view,table D: view1,table1
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
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
触发器可基于表或视图,并能产生两个特殊的表是( ) A: Deleted、inserted B: Delete、insert C: View、table D: View1、table1
触发器可基于表或视图,并能产生两个特殊的表是( ) A: Deleted、inserted B: Delete、insert C: View、table D: View1、table1
触发器可引用视图或临时表,并产生两个特殊的表是_______。 A: Deleted、Inserted B: Delete、Insert C: View、Tabl D: View1、Table1
触发器可引用视图或临时表,并产生两个特殊的表是_______。 A: Deleted、Inserted B: Delete、Insert C: View、Tabl D: View1、Table1