select * from "Test";
INSERT INTO "Test" ("id", "name", "pid") VALUES ('01', '中国', '00');
INSERT INTO "Test" ("id", "name", "pid") VALUES ('01.01', '福建', '01');
INSERT INTO "Test" ("id", "name", "pid") VALUES ('01.01.01', '福州', '01.01');
INSERT INTO "Test" ("id", "name", "pid") VALUES ('01.01.02', '厦门', '01.01');
INSERT INTO "Test" ("id", "name", "pid") VALUES ('01.02', '中国', '01');
select "id", "name", "pid" from "Test" start with "id" = '01' connect by prior "id" = "pid";