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获取一段时间范围内的日期列表
select to_date( ' 2007/02/26 ' , ' yyyy/mm/dd ' ) + rownum - 1 from user_objects where rownum <= (to_date( ' 2007/03/01' , ' yyyy/mm/dd ' ) - to_date( ' 2007/02/26 ' , ' yyyy/mm/dd...
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父子表根据id找到所有的子孙id
有张表,有两个字段: id,patentid，他们分别记录了这条记录的id,以及父id号, 如何根据最顶层的id找到所有的id,包括子id,孙子id,以及重孙id. --用递归查询SELECT ID, PARENTID FROM tablename Start With ID = 'xxx' Connect By Prior ID = ParentId...
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