一、語法 大致寫法:select * from some_table [where 條件1] connect by [條件2] start with [條件3]; 其中 connect by 與 start with 語句擺放的先后順序不影響查詢的結果,[where 條件1]可以不需要 ...
內容來自:http: www.cnblogs.com baiyixianzi archive plsql .html 和http: jingyan.baidu.com article d d e bb f c .html 這里留個備份,方便以后查看。 一 語法 大致寫法:select from some table where 條件 connect by 條件 start with 條件 其中 c ...
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一、語法 大致寫法:select * from some_table [where 條件1] connect by [條件2] start with [條件3]; 其中 connect by 與 start with 語句擺放的先后順序不影響查詢的結果,[where 條件1]可以不需要 ...
select * from mdm_organization o start with o.org_code='10000008' connect by prior o.org_code=o.org_parent_code 按照條件org_code='10000008 ...
轉自:https://blog.csdn.net/qq_29274091/article/details/72627350 Oracle中start with和connect by 用法理解 轉自: http://www.blogjava.net/xzclog/archive ...
connect by 是結構化查詢中用到的,其基本語法是: select … from tablename start with 條件1connect by 條件2where 條件3; 例: select * from table start ...
start with,connect by主要目的:從表中取出樹狀數據。可以假想成表中存成的各條數據是分別是樹中的一個結點。 主要用法: select ... start ...
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 ...
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 ...
一、簡介 在oracle中start with connect by (prior) 用來對樹形結構的數據進行查詢。其中start with conditon 給出的是數據搜索范圍, connect by后面給出了遞歸查詢的條件,prior 關鍵字表示父數據,prior 條件表示子數據需要滿足 ...