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oracle 树结构查询
SELECT RPAD(' ', 4 * (LEVEL-1), '--') || name as name,
CONNECT_BY_ROOT name "ROOT",
CONNECT_BY_ISLEAF "ISLEAF",
LEVEL,
t.*,
SYS_CONNECT_BY_PATH(t. ...
oracle_sql递归查询积累
一、start with.....connect by递归查询
建表语句:
CREATE TABLE D_ZONECODE
(
ID VARCHAR2(36) NOT NULL UNIQUE,
ZONECODE VARCHAR2(6) NOT NULL,
SUPERCODE VARCHAR2(6) NOT NULL,
ZONELLEVEL VARCHAR2(2) NOT ...