zoukankan      html  css  js  c++  java
  • Oracle递归查询(树型查询)

    prior放的左右位置决定了检索是自底向上还是自顶向下. 左边是自上而下(找子节点),右边是自下而上(找父节点)

    SELECT T.AREA_CODE, T.AREA_NAME, T.AREA_LEVEL
      FROM TBL_SYS_AREA_CODE T
    CONNECT BY PRIOR T.AREA_CODE = T.PARENT_AREA_CODE
     START WITH T.PARENT_AREA_CODE = '父级';
    SELECT T.AREA_CODE, T.AREA_NAME, T.AREA_LEVEL
      FROM TBL_SYS_AREA_CODE T
    CONNECT BY  T.AREA_CODE = PRIOR T.PARENT_AREA_CODE
     START WITH T.Area_Name = '子级'; 

     深入(转):oracle 递归查询 CONNECT BY、START WITH、CONNECT_BY_ROOT、CONNECT_BY_ISLEAF、SYS_CONNECT_BY_PATH:https://blog.csdn.net/feier7501/article/details/21815691

  • 相关阅读:
    1.13 Flask
    1.12 Flask 复习
    1.11 flask
    1.10 flask
    1.9 flask
    1.8 flask 路由
    sql server存储过程
    Ajax学习笔记
    随机密码字典生成器
    jRazor
  • 原文地址:https://www.cnblogs.com/ViokingJava/p/8184858.html
Copyright © 2011-2022 走看看