摘要: Rownum原理: 1 Oracle executes your query. 执行查询操作 2 Oracle fetches the first row and calls it row number 1. 将第一行的row num置为1 3 Have we gotten past row num 阅读全文
posted @ 2016-09-26 15:13 mipengxing 阅读(247) 评论(1) 推荐(0)