多项选择题
下面检索结果一定不是一行的命令是()
A.select distinct*fromo rders;
B.select * from orders limit 1,2;
C.select top 1*from orders;
D.select * from orders limit 1;
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相关考题
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多项选择题
以下否定语句搭配正确的是()
A.not in
B.in not
C.not between and
D. is not null -
多项选择题
下列哪些列类型是数值型的数据()。
A.DOUBLE
B.INT
C.SET
D.FLOAT -
多项选择题
下面语句中,表示过虑条件是vend_id=1002或vend_id=1003的是()
A.select * from products where vend_id=1002 or vend_id=1003
B.select * from products where vend_id in(1002,1003);
C.select * from products where vend_id not in(1004,1005);
D.select * from products where vend_id=1002and vend_id=1003
