摘要: select [name],[id],[country] into[new_sanguo] from [sanguo]where [sex]='Male'复制[sanguo]中所有[sex]='Male'的数据sql server而create table new_sanguo asselect [... 阅读全文
posted @ 2012-10-16 17:04 july2008hll 阅读(213) 评论(0) 推荐(0)
摘要: What is RDBMS?Relational Data Base Management Systems (RDBMS) are database management systems that maintain data records and indices in tables. Relati... 阅读全文
posted @ 2012-10-16 11:07 july2008hll 阅读(268) 评论(0) 推荐(0)