当前位置： 首页 > news >正文

ORACLE-递归查询、树操作

news 2025/7/9 12:49:05

1. 数据准备

-- 测试数据准备
DROP TABLE untifa_test;CREATE TABLE untifa_test(child_id NUMBER(10) NOT NULL, --子idtitle VARCHAR2(50), --标题relation_type VARCHAR(10) --关系,parent_id NUMBER(10) --父id
);insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (1, '父菜单1', 'A', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (1, '父菜单1', 'B', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (1, '父菜单1', 'C', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (2, '父菜单2', 'A', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (2, '父菜单2', 'B', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (2, '父菜单2', 'C', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (3, '父菜单3', 'A', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (3, '父菜单3', 'B', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (3, '父菜单3', 'C', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (4, '父菜单4', 'A', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (4, '父菜单4', 'B', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (4, '父菜单4', 'C', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (5, '父菜单5', 'A', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (5, '父菜单5', 'B', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (5, '父菜单5', 'C', 0);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (6, '一级菜单6', 'A', 1);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (7, '一级菜单7', 'B', 1);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (8, '一级菜单8', 'C', 1);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (9, '一级菜单9', 'A', 2);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (10, '一级菜单10', 'B', 2);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (11, '一级菜单11', 'C', 2);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (12, '一级菜单12', 'A', 3);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (13, '一级菜单13', 'B', 3);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (14, '一级菜单14', 'C', 3);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (15, '一级菜单15', 'A', 4);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (16, '一级菜单16', 'B', 4);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (17, '一级菜单17', 'C', 4);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (18, '一级菜单18', 'A', 5);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (19, '一级菜单19', 'B', 5);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (20, '一级菜单20', 'C', 5);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (21, '二级菜单21', 'A', 6);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (22, '二级菜单22', 'B', 6);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (23, '二级菜单23', 'C', 6);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (24, '二级菜单24', 'A', 7);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (25, '二级菜单25', 'B', 7);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (26, '二级菜单26', 'C', 7);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (27, '二级菜单27', 'A', 8);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (28, '二级菜单28', 'B', 8);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (29, '二级菜单29', 'C', 8);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (30, '二级菜单30', 'A', 9);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (31, '二级菜单31', 'B', 9);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (32, '二级菜单32', 'C', 9);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (33, '二级菜单33', 'A', 10);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (34, '二级菜单34', 'B', 10);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (35, '二级菜单35', 'C', 10);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (36, '二级菜单36', 'A', 11);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (37, '二级菜单37', 'B', 11);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (38, '二级菜单38', 'C', 11);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (39, '二级菜单39', 'A', 12);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (40, '二级菜单40', 'B', 12);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (41, '二级菜单41', 'C', 12);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (42, '二级菜单42', 'A', 13);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (43, '二级菜单43', 'B', 13);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (44, '二级菜单44', 'C', 13);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (45, '二级菜单45', 'A', 14);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (46, '二级菜单46', 'B', 14);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (47, '二级菜单47', 'C', 14);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (48, '二级菜单48', 'A', 15);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (49, '二级菜单49', 'B', 15);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (50, '二级菜单50', 'C', 15);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (51, '二级菜单51', 'A', 16);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (52, '二级菜单52', 'B', 16);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (53, '二级菜单53', 'C', 16);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (54, '二级菜单54', 'A', 17);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (55, '二级菜单55', 'B', 17);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (56, '二级菜单56', 'C', 17);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (57, '二级菜单57', 'A', 18);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (58, '二级菜单58', 'B', 18);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (59, '二级菜单59', 'C', 18);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (60, '二级菜单60', 'A', 19);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (61, '二级菜单61', 'B', 19);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (62, '二级菜单62', 'C', 19);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (63, '二级菜单63', 'A', 20);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (64, '二级菜单64', 'B', 20);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (65, '二级菜单65', 'C', 20);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (66, '三级菜单66', 'A', 21);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (67, '三级菜单67', 'B', 21);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (68, '三级菜单68', 'C', 21);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (69, '三级菜单69', 'A', 22);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (70, '三级菜单70', 'B', 22);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (71, '三级菜单71', 'C', 22);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (72, '三级菜单72', 'A', 23);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (73, '三级菜单73', 'B', 23);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (74, '三级菜单74', 'C', 23);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (75, '三级菜单75', 'A', 24);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (76, '三级菜单76', 'B', 24);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (77, '三级菜单77', 'C', 24);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (78, '三级菜单78', 'A', 25);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (79, '三级菜单79', 'B', 25);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (80, '三级菜单80', 'C', 25);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (81, '三级菜单81', 'A', 26);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (82, '三级菜单82', 'B', 26);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (83, '三级菜单83', 'C', 26);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (84, '三级菜单84', 'A', 27);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (85, '三级菜单85', 'B', 27);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (86, '三级菜单86', 'C', 27);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (87, '三级菜单87', 'A', 28);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (88, '三级菜单88', 'B', 28);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (89, '三级菜单89', 'C', 28);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (90, '三级菜单90', 'A', 29);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (91, '三级菜单91', 'B', 29);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (92, '三级菜单92', 'C', 29);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (93, '三级菜单93', 'A', 30);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (94, '三级菜单94', 'B', 30);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (95, '三级菜单95', 'C', 30);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (96, '三级菜单96', 'A', 31);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (97, '三级菜单97', 'B', 31);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (98, '三级菜单98', 'C', 31);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (99, '三级菜单99', 'A', 32);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (100, '三级菜单100', 'B', 32);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (101, '三级菜单101', 'C', 32);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (102, '三级菜单102', 'A', 33);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (103, '三级菜单103', 'B', 33);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (104, '三级菜单104', 'C', 33);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (105, '三级菜单105', 'A', 34);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (106, '三级菜单106', 'B', 34);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (107, '三级菜单107', 'C', 34);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (108, '三级菜单108', 'A', 35);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (109, '三级菜单109', 'B', 35);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (110, '三级菜单110', 'C', 35);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (111, '三级菜单111', 'A', 36);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (112, '三级菜单112', 'B', 36);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (113, '三级菜单113', 'C', 36);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (114, '三级菜单114', 'A', 37);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (115, '三级菜单115', 'B', 37);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (116, '三级菜单116', 'C', 37);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (117, '三级菜单117', 'A', 38);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (118, '三级菜单118', 'B', 38);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (119, '三级菜单119', 'C', 38);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (120, '三级菜单120', 'A', 39);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (121, '三级菜单121', 'B', 39);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (122, '三级菜单122', 'C', 39);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (123, '三级菜单123', 'A', 40);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (124, '三级菜单124', 'B', 40);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (125, '三级菜单125', 'C', 40);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (126, '三级菜单126', 'A', 41);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (127, '三级菜单127', 'B', 41);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (128, '三级菜单128', 'C', 41);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (129, '三级菜单129', 'A', 42);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (130, '三级菜单130', 'B', 42);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (131, '三级菜单131', 'C', 42);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (132, '三级菜单132', 'A', 43);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (133, '三级菜单133', 'B', 43);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (134, '三级菜单134', 'C', 43);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (135, '三级菜单135', 'A', 44);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (136, '三级菜单136', 'B', 44);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (137, '三级菜单137', 'C', 44);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (138, '三级菜单138', 'A', 45);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (139, '三级菜单139', 'B', 45);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (140, '三级菜单140', 'C', 45);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (141, '三级菜单141', 'A', 46);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (142, '三级菜单142', 'B', 46);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (143, '三级菜单143', 'C', 46);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (144, '三级菜单144', 'A', 47);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (145, '三级菜单145', 'B', 47);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (146, '三级菜单146', 'C', 47);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (147, '三级菜单147', 'A', 48);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (148, '三级菜单148', 'B', 48);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (149, '三级菜单149', 'C', 48);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (150, '三级菜单150', 'A', 49);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (151, '三级菜单151', 'B', 49);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (152, '三级菜单152', 'C', 49);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (153, '三级菜单153', 'A', 50);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (154, '三级菜单154', 'B', 50);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (155, '三级菜单155', 'C', 50);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (156, '三级菜单156', 'A', 51);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (157, '三级菜单157', 'B', 51);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (158, '三级菜单158', 'C', 51);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (159, '三级菜单159', 'A', 52);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (160, '三级菜单160', 'B', 52);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (161, '三级菜单161', 'C', 52);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (162, '三级菜单162', 'A', 53);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (163, '三级菜单163', 'B', 53);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (164, '三级菜单164', 'C', 53);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (165, '三级菜单165', 'A', 54);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (166, '三级菜单166', 'B', 54);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (167, '三级菜单167', 'C', 54);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (168, '三级菜单168', 'A', 55);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (169, '三级菜单169', 'B', 55);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (170, '三级菜单170', 'C', 55);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (171, '三级菜单171', 'A', 56);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (172, '三级菜单172', 'B', 56);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (173, '三级菜单173', 'C', 56);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (174, '三级菜单174', 'A', 57);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (175, '三级菜单175', 'B', 57);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (176, '三级菜单176', 'C', 57);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (177, '三级菜单177', 'A', 58);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (178, '三级菜单178', 'B', 58);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (179, '三级菜单179', 'C', 58);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (180, '三级菜单180', 'A', 59);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (181, '三级菜单181', 'B', 59);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (182, '三级菜单182', 'C', 59);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (183, '三级菜单183', 'A', 60);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (184, '三级菜单184', 'B', 60);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (185, '三级菜单185', 'C', 60);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (186, '三级菜单186', 'A', 61);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (187, '三级菜单187', 'B', 61);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (188, '三级菜单188', 'C', 61);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (189, '三级菜单189', 'A', 62);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (190, '三级菜单190', 'B', 62);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (191, '三级菜单191', 'C', 62);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (192, '三级菜单192', 'A', 63);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (193, '三级菜单193', 'B', 63);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (194, '三级菜单194', 'C', 63);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (195, '三级菜单195', 'A', 64);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (196, '三级菜单196', 'B', 64);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (197, '三级菜单197', 'C', 64);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (198, '三级菜单198', 'A', 65);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (199, '三级菜单199', 'B', 65);
insert into untifa_test (CHILD_ID, TITLE, RELATION_TYPE, PARENT_ID)values (200, '三级菜单200', 'C', 65);

1. 树状关系图

在这里插入图片描述

2. 语法

SELECT colnum FROM tablename WHERE 条件1
  START WITH 条件2
  CONNECT BY [NOCYCLE] 条件3（PRIOR 列名1 = 列名2 | 列名1 = PRIOR 列名2 …）


WHERE 条件1 过滤条件语句，对树状结构遍历后得到的记录进行过滤。
START WITH 条件2 限定条件语句，限定根节点，可以将跟节点限制为1个或多个。
CONNECT BY 条件3（PRIOR 列名1 = 列名2 | 列名1 = PRIOR 列名2） 连接条件语句，其中PRIOR表示的是上一条记录。
NOCYCLE 参数避免进入死循环


比如 CONNECT BY PRIOR child_id = parent_id 表示上一条记录的child_id是本条记录的parent_id，即本条记录的父节点是上一条记录的子节点。
CONNCET BY 说明每行数据是按层次检索，并规定将表中的数据链入树形结构的关系中。
PRIOR在=的左侧，代表左侧的为父节点，否则右侧为父节点，这决定了遍历树的方向。


执行顺序

  1. 根据START WITH 条件2 确定要访问的根节点有哪些
  2. 访问此节点
  3. 判断此节点有无未访问的子节点，若有，则转向最左侧的未被访问的子节点，并执行步骤2、步骤3，否则执行步骤4
  4. 若该节点为根节点，则访问完毕，否则执行步骤5
  5. 返回到此节点的父节点，并执行步骤3
  6. 根据where 条件1 过滤最终遍历树后的查询结果

3. 适用函数

  • LPAD
    LPAD(STR1 =>
    , LEN =>
    , PAD => )
    STR1 准备被填充的字符串，长度不能为空–为空时无效果；
    LEN 填充之后的字符串长度，也就是该函数返回的字符串长度，如果这个数量比原字符串的长度要短，lpad函数将会把字符串截取成从左到右的n个字符
    PAD 填充字符串，是个可选参数，这个字符串是要粘贴到string的左边，如果这个参数未写，lpad函数将会在string的左边粘贴空格

  • LEVEL
    LEVEL 树状关系的层级，根节点的层级始终为1

  • connect_by_isleaf
    此函数用来判断当前节点是否包含下级节点，如果包含的话，说明不是叶子节点，返回0；反之，如果不包含下级节点，这里返回1

  • sys_connect_by_path(colnum,‘str’)
    此函数将遍历到的路径根据函数中的分隔符，组成一个新的字符串

  • WITH tablename AS () SELECT … FROM tablename WHERE …;
    ()中写查询的逻辑，将查询到的结果放入临时表tablename中，再根据条件按需查询

4. 查询案例

4.1 案例1

-- 想要得到从父节点1开始，关系级别是A的所有子节点
SELECT LPAD('#', 2 * (LEVEL - 1) + 1, '-') || t.title,LEVEL,connect_by_isleaf,sys_connect_by_path(t.title || t.relation_type, '/'),t.*FROM untifa_test tSTART WITH t.child_id = 1AND t.relation_type = 'A' -- 限定跟结果集
CONNECT BY NOCYCLE PRIOR t.child_id = t.parent_idAND t.relation_type = 'A' -- 限定子节点结果集ORDER BY LEVEL;

查询结果：
在这里插入图片描述

4.2 案例2

-- 想要得到从子节点66开始，关系级别是A的所有父节点
SELECT LPAD('#', 2 * (LEVEL - 1) + 1, '-') || t.title,LEVEL,connect_by_isleaf,sys_connect_by_path(t.title || t.relation_type, '/'),t.*FROM untifa_test tSTART WITH t.child_id = 66AND t.relation_type = 'A' -- 限定跟结果集
CONNECT BY NOCYCLE t.child_id = PRIOR t.parent_idAND t.relation_type = 'A' -- 限定子节点结果集ORDER BY LEVEL;

查询结果：
在这里插入图片描述

4.3 案例3

-- 将父节点1A的parent_id改为1
UPDATE untifa_test t SET t.parent_id = '1' WHERE t.child_id = '1' AND t.relation_type = 'A';
-- 再查询从父节点1开始，关系级别是A的所有子节点
SELECT LPAD('#', 2 * (LEVEL - 1) + 1, '-') || t.title,LEVEL,connect_by_isleaf,sys_connect_by_path(t.title || t.relation_type, '/'),t.*FROM untifa_test tSTART WITH t.child_id = 1AND t.relation_type = 'A'
CONNECT BY PRIOR t.child_id = t.parent_idAND t.relation_type = 'A'ORDER BY LEVEL;

查询结果：
在这里插入图片描述
这是因为父节点的child_id与parent_id都为1，形成了死循环，所有我们要加入NOCYCLE来规避死循环

SELECT LPAD('#', 2 * (LEVEL - 1) + 1, '-') || t.title,LEVEL,connect_by_isleaf,sys_connect_by_path(t.title || t.relation_type, '/'),t.*FROM untifa_test tSTART WITH t.child_id = 1AND t.relation_type = 'A'
CONNECT BY NOCYCLE PRIOR t.child_id = t.parent_idAND t.relation_type = 'A'ORDER BY LEVEL;

查询结果：
在这里插入图片描述

4.4 案例4

-- 想要得到从子节点66开始，关系级别是A的所有父节点
-- 同案例3一样 CONNECT BY 后面不加 NOCYCLE 则会陷入死循环报错
SELECT LPAD('#', 2 * (LEVEL - 1) + 1, '-') || t.title,LEVEL,connect_by_isleaf,sys_connect_by_path(t.title || t.relation_type, '/'),t.*FROM untifa_test tSTART WITH t.child_id = 66AND t.relation_type = 'A'
CONNECT BY NOCYCLE t.child_id = PRIOR t.parent_idAND t.relation_type = 'A'ORDER BY LEVEL;

查询结果：
在这里插入图片描述

对比案例4与案例2的结果不难发现，在将child_id为1的parent_id从0改为1后，查询结果少了一条，还没弄清楚原因，猜测是因为死循环，过滤掉了parend_id=1和child_id=1的记录，但是不清楚为什么案例3没有过滤掉parend_id=1和child_id=1的记录。

相关文章：

ORACLE-递归查询、树操作

1. 数据准备 -- 测试数据准备 DROP TABLE untifa_test;CREATE TABLE untifa_test(child_id NUMBER(10) NOT NULL, --子idtitle VARCHAR2(50), --标题relation_type VARCHAR(10) --关系,parent_id NUMBER(10) --父id );insert into untifa_test (CHILD_ID, TITLE, RELATION_TYP…...

编程日记 2023/10/28 15:13:21

MySQL篇---第四篇

系列文章目录 文章目录 系列文章目录一、并发事务带来哪些问题?二、事务隔离级别有哪些?MySQL的默认隔离级别是?三、大表如何优化？一、并发事务带来哪些问题? 在典型的应用程序中，多个事务并发运行，经常会操作相同的数据来完成各自的任务（多个用户对 同一数据进行操作…...

编程日记 2023/10/28 15:11:16

em/px/rem/vh/vw单位的区别

一、绝对长度单位 1.px 表示像素，显示器上每个像素点大小都是相同的 二、相对长度单位 2.em 相对于当前对象内文本的字体尺寸，如未设置对行内文本字体的尺寸，则相对于浏览器的默认字体（1em16px） em值不是固定的&…...

编程日记 2023/10/28 15:10:15

【C++】多态 ③ ( “ 多态 “ 实现需要满足的三个条件 | “ 多态 “ 的应用场景 | “ 多态 “ 的思想 | “ 多态 “ 代码示例 )

文章目录 一、" 多态 " 实现条件1、" 多态 " 实现需要满足的三个条件2、" 多态 " 的应用场景3、" 多态 " 的思想 二、" 多态 " 代码示例 一、" 多态 " 实现条件 1、" 多态 " 实现需要满足的三个条件 &q…...

编程日记 2023/10/28 15:09:15

创建一个Keil项目

1、创建项目 2、选择存放的文件夹，还有设置项目名 3、选择型号（因为没有STC,用下面这个替代，功能差不多） 4、选择不用启动文件 5、就会得到下面这个，可以在Source Group 1下面编写代码了 6、右键source Group 1,添加c语…...

编程日记 2023/10/28 15:07:13

Xray的简单使用

xray 简介 xray 是一款功能强大的安全评估工具，由多名经验丰富的一线安全从业者呕心打造而成，主要特性有: 检测速度快。发包速度快; 漏洞检测算法效率高。支持范围广。大至 OWASP Top 10 通用漏洞检测，小至各种 CMS 框架 POC，均…...

编程日记 2023/10/28 15:06:12

Linux Ubunto Nginx安装

一 安装前 环境准备 gcc $ sudo apt-get install gcc zlib $ sudo apt-get install zlib1g-dev pcre $ sudo apt-get install libpcre3 libpcre3-dev openssl $ sudo apt-get install openssl libssl-dev‘ ubuntu 安装 libssl-dev失败的解决方案 1.安装aptitude sudo apt-g…...

编程日记 2023/10/28 15:04:09

深度学习中的epoch, batch 和 iteration

名词定义epoch使用训练集的全部数据进行一次完整的训练，称为“一代训练”batch使用训练集中的一小部分样本对模型权重进行一次反向传播的参数更新，这样的一部分样本称为：“一批数据”iteration使用一个batch的数据对模型进行一次参数更新的过…...

编程日记 2023/10/28 15:03:08

unity开发安卓视频文件适配手机和平板

using UnityEngine; using UnityEngine.UI;public class VideoResize : MonoBehaviour {private RawImage rawImage;private VideoPlayer videoPlayer;private void Start(){rawImage GetComponent<RawImage();videoPlayer GetComponent<VideoPlayer>();// 播放视频…...

编程日记 2023/10/28 15:02:07

NLP之RNN的原理讲解（python示例）

目录 代码示例代码解读知识点介绍 代码示例 import numpy as np import tensorflow as tf from tensorflow.keras.layers import SimpleRNNCell# 第t时刻要训练的数据 xt tf.Variable(np.random.randint(2, 3, size[1, 1]), dtypetf.float32) print(xt) # https://www.cnblog…...

编程日记 2023/10/28 15:01:06

yo！这里是进程间通信

目录 前言 进程间通信简介 目的 分类 匿名通道 介绍 举例&#xff08;进程池&#xff09; 命名管道 介绍 举例 共享内存 介绍 共享内存函数 1.shmget 2.shmat 3.shmdt 4.shmctl 举例 1.框架 2.通信逻辑 消息队列 信号量 同步与互斥 理解信号量 后记…...

编程日记 2023/10/28 15:00:05

使用docker安装MySQL，Redis，Nacos，Consul教程

文章目录 安装MySQL安装Redis安装Nacos安装Consul 如未安装docker&#xff0c;参考教程&#xff1a; https://blog.csdn.net/m0_63230155/article/details/134090090 安装MySQL #拉取镜像 sudo docker pull mysql:latestsudo docker run --name mysql \-p 3306:3306 \-e MYSQ…...

编程日记 2023/10/28 14:59:04

python和Springboot如何交互？

Python和Spring Boot可以通过RESTful API进行交互。Spring Boot通常用于后端开发&#xff0c;提供了快速构建RESTful API的工具&#xff0c;而Python则可以用于编写前端或与后端交互的代码。 要实现Python和Spring Boot的交互&#xff0c;可以按照以下步骤进行&#xff1a; 在…...

编程日记 2023/10/28 14:58:03

Qt实现json解析

前提要点 json文件&#xff0c;可通过键值的方式存储你所需要的数据&#xff0c;斌且支持多种类型存储&#xff0c;类似于一种结构化的数据库&#xff0c;在读取json文件时可通过相对应的关键字精准获取。他是一种树状结构&#xff0c;我们可以自己设定叶子的数量以及他所代表…...

编程日记 2023/10/28 14:57:02

Ajax、Json深入浅出，及原生Ajax及简化版Ajax

Ajax 1.路径介绍 1.1 JavaWeb中的路径 在JavaWeb中&#xff0c;路径分为相对路径和绝对路径两种&#xff1a; 相对路径&#xff1a; ./ 表示当前目录(可省略) ../ 表示当前文件所在目录的上一级目录 绝对路径&#xff1a; http://ip:port/工程名/资源路径 2.2 在JavaWeb中…...

编程日记 2023/10/28 14:56:01

前端第一阶段测试

前端第一阶段测试 选择问答 如果觉得有用请给我点个赞⑧~ 选择 1、【单选】下列哪个是子代选择器 A A、p>b B、p b C、pb D、p.b 2、【单选】下述有关css属性position的属性值的描述&#xff0c;说法错误的是&#xff1f;B A、static&#xff1a;没有定位&#xff0c;元素出…...

编程日记 2023/10/28 14:54:59

openlayers+vue的bug

使用addInteraction添加交互draw绘制&#xff0c;预期removeInteraction删除交互draw绘制时不再绘制&#xff0c;但是删除绘制不起作用&#xff0c;各种找原因&#xff0c;结果把data中的map变量注释掉即可&#xff0c;原因未知。 <template><div><div id"…...

编程日记 2023/10/28 14:53:58

实时数仓-Hologres介绍与架构

本文是向大家介绍Hologres是一款实时HSAP产品&#xff0c;隶属阿里自研大数据品牌MaxCompute&#xff0c;兼容 PostgreSQL 生态、支持MaxCompute数据直接查询&#xff0c;支持实时写入实时查询&#xff0c;实时离线联邦分析&#xff0c;低成本、高时效、快速构筑企业实时数据仓…...

编程日记 2023/10/28 14:52:57

asp.net教务管理信息系统VS开发sqlserver数据库web结构c#编程Microsoft Visual Studio计算机毕业设计

一、源码特点 asp.net 教务管理信息系统是一套完善的web设计管理系统&#xff0c;系统具有完整的源代码和数据库&#xff0c;系统主要采用B/S模式开发。开发环境为vs2010&#xff0c;数据库为sqlserver2008&#xff0c;使用c#语言 开发 asp.net教务管理系统 应用技术&a…...

编程日记 2023/10/28 14:51:55

爬虫、数据清洗和分析

爬虫、数据清洗和分析是在数据科学、数据挖掘和网络爬虫开发领域中常见的概念。 爬虫&#xff08;Web Scraping&#xff09;&#xff1a;爬虫是一种自动化程序或脚本&#xff0c;用于从互联网上的网站上提取信息。这些信息可以是文本、图像、视频或其他类型的数据。爬虫通常会…...

编程日记 2023/10/28 14:50:55

FFmpeg 低延迟同屏方案

引言 在实时互动需求激增的当下&#xff0c;无论是在线教育中的师生同屏演示、远程办公的屏幕共享协作&#xff0c;还是游戏直播的画面实时传输&#xff0c;低延迟同屏已成为保障用户体验的核心指标。FFmpeg 作为一款功能强大的多媒体框架&#xff0c;凭借其灵活的编解码、数据…...

编程新知 2025/6/21 15:38:27

理解 MCP 工作流：使用 Ollama 和 LangChain 构建本地 MCP 客户端

&#x1f31f; 什么是 MCP&#xff1f; 模型控制协议 (MCP) 是一种创新的协议&#xff0c;旨在无缝连接 AI 模型与应用程序。 MCP 是一个开源协议&#xff0c;它标准化了我们的 LLM 应用程序连接所需工具和数据源并与之协作的方式。 可以把它想象成你的 AI 模型 和想要使用它…...

编程新知 2025/7/9 11:27:28

渗透实战PortSwigger靶场-XSS Lab 14：大多数标签和属性被阻止

<script>标签被拦截 我们需要把全部可用的 tag 和 event 进行暴力破解 XSS cheat sheet&#xff1a; https://portswigger.net/web-security/cross-site-scripting/cheat-sheet 通过爆破发现body可以用 再把全部 events 放进去爆破 这些 event 全部可用 <body onres…...

编程新知 2025/7/7 12:59:08

跨链模式：多链互操作架构与性能扩展方案

跨链模式&#xff1a;多链互操作架构与性能扩展方案 ——构建下一代区块链互联网的技术基石 一、跨链架构的核心范式演进 1. 分层协议栈&#xff1a;模块化解耦设计 现代跨链系统采用分层协议栈实现灵活扩展&#xff08;H2Cross架构&#xff09;&#xff1a; 适配层&#xf…...

编程新知 2025/7/9 3:41:22

Java 加密常用的各种算法及其选择

在数字化时代&#xff0c;数据安全至关重要&#xff0c;Java 作为广泛应用的编程语言&#xff0c;提供了丰富的加密算法来保障数据的保密性、完整性和真实性。了解这些常用加密算法及其适用场景&#xff0c;有助于开发者在不同的业务需求中做出正确的选择。​ 一、对称加密算法…...

编程新知 2025/7/7 7:20:27

linux 下常用变更-8

1、删除普通用户 查询用户初始UID和GIDls -l /home/ ###家目录中查看UID cat /etc/group ###此文件查看GID删除用户1.编辑文件 /etc/passwd 找到对应的行&#xff0c;YW343:x:0:0::/home/YW343:/bin/bash 2.将标红的位置修改为用户对应初始UID和GID&#xff1a; YW3…...

编程新知 2025/7/5 18:42:22

网络编程（UDP编程）

思维导图 UDP基础编程&#xff08;单播&#xff09; 1.流程图 服务器&#xff1a;短信的接收方 创建套接字 (socket)-----------------------------------------》有手机指定网络信息-----------------------------------------------》有号码绑定套接字 (bind)--------------…...

编程新知 2025/7/8 21:42:11

laravel8+vue3.0+element-plus搭建方法

创建 laravel8 项目 composer create-project --prefer-dist laravel/laravel laravel8 8.* 安装 laravel/ui composer require laravel/ui 修改 package.json 文件 "devDependencies": {"vue/compiler-sfc": "^3.0.7","axios": …...

编程新知 2025/7/7 4:31:28

JS设计模式(4)：观察者模式

JS设计模式(4):观察者模式 一、引入 在开发中&#xff0c;我们经常会遇到这样的场景&#xff1a;一个对象的状态变化需要自动通知其他对象&#xff0c;比如&#xff1a; 电商平台中&#xff0c;商品库存变化时需要通知所有订阅该商品的用户&#xff1b;新闻网站中&#xff0…...

编程新知 2025/7/6 11:26:45

【分享】推荐一些办公小工具

1、PDF 在线转换 https://smallpdf.com/cn/pdf-tools 推荐理由&#xff1a;大部分的转换软件需要收费&#xff0c;要么功能不齐全&#xff0c;而开会员又用不了几次浪费钱&#xff0c;借用别人的又不安全。 这个网站它不需要登录或下载安装。而且提供的免费功能就能满足日常…...

编程新知 2025/6/28 13:23:48