摘要:创建教材中的大学数据库: create table classroom (building varchar(15), room_number varchar(7), capacity numeric(4,0), primary key (building, room_number) ); creat
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posted @ 2016-04-19 17:45
posted @ 2016-04-19 17:45
posted @ 2016-04-17 14:03
posted @ 2016-04-12 17:16