单项选择题
A.缺少get关键词B.缺少delete关键词C.缺少into关键词D.缺少insert into 关键词
A.约束字段的数据类型B.方便数据管理与查询C.没作用D.完善数据
A.ALTER TABLE gameB.drop table gameC.drop database gameD.create table game as game0