CREATE TABLE "T_FUNCTION"
(
"ID" VARCHAR2(32 CHAR) PRIMARY KEY NOT NULL ENABLE,
"NAME" VARCHAR2(50 CHAR) NOT NULL ENABLE,
"PARENT_ID" VARCHAR2(32 CHAR),
CONSTRAINT "FK_C5438E4C3CE14B18944E16AB6F0" FOREIGN KEY ("PARENT_ID") REFERENCES "T_FUNCTION" ("ID") ENABLE
)
插入测试数据:
Insert into T_FUNCTION (ID,PARENT_ID) values ('1',null);
Insert into T_FUNCTION (ID,PARENT_ID) values ('2',null);
Insert into T_FUNCTION (ID,PARENT_ID) values ('3','2');
Insert into T_FUNCTION (ID,PARENT_ID) values ('4','2');
Insert into T_FUNCTION (ID,PARENT_ID) values ('5','1');
Insert into T_FUNCTION (ID,PARENT_ID) values ('6','5');
Insert into T_FUNCTION (ID,PARENT_ID) values ('7','1');
Insert into T_FUNCTION (ID,PARENT_ID) values ('8','3');
Insert into T_FUNCTION (ID,PARENT_ID) values ('9','7');
树形查询关键词:connect by prior ... start with ...
select * from t_function f where 1=1 connect by prior f.id=f.parent_id start with f.id='1'
查询结果:
id parent_id
1 null
5 1
7 1
6 5
9 7
oracle树形查询
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转载自javahuhui.iteye.com/blog/2232364
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