原文:oracle中 connect by prior 遞歸算法

Oracle中start with...connect by prior子句使用方法 connect by 是結構化查詢中用到的,其基本的語法是: select ... from tablename start with條件 connect by條件 where 條件 例: select from tablestart with org id HBHqfWGWPy connect by prio ...

2014-11-12 17:44 0 4782 推薦指數:

查看詳情

oracleconnect by prior的使用

作用 connect by主要用於父子,祖孫,上下級等層級關系的查詢 語法 { CONNECT BY [ NOCYCLE ] condition [AND condition]... [ START WITH condition ]| START WITH condition CONNECT ...

Wed Apr 29 17:08:00 CST 2020 0 899
oracleconnect by prior用法

摘自:http://www.cnblogs.com/linjiqin/p/3152690.html 先用scott用戶下的emp表做實驗.emp表有個字段,一個是empno(員工編號),另一個 ...

Mon Aug 14 21:59:00 CST 2017 0 5786
oracleconnect by prior的使用

作用 connect by主要用於父子,祖孫,上下級等層級關系的查詢 語法 { CONNECT BY [ NOCYCLE ] condition [AND condition]... [ START WITH condition ]| START WITH condition CONNECT ...

Fri May 24 18:13:00 CST 2019 0 10583
 
粵ICP備18138465號   © 2018-2025 CODEPRJ.COM