拉狐狸小孩的博客登录后复制 select database_id,name,physical_name AS CurrentLocation,state_desc,size from sys.master_files where database_id=db_id(N'数据库名');1.2.3.作者:꧁执笔小白꧂ ...
2401_84181193的博客举个例子,用Oracle的SQL写top5大致是这样的: select \* from (select x from T order by x desc) where rownum表T有10亿条数据,从SQL语句来看,是将全部数据大排序后取出前5名,剩下的排序结果就没用了!...