dapatkan daftar induk rekursif

Di sini, saya membuat sedikit fungsi untuk Anda, saya memeriksanya di database saya (MAMP) dan berfungsi dengan baik

use mySchema;
drop procedure if exists getParents;

DELIMITER $$
CREATE PROCEDURE getParents (in_ID int)
BEGIN
DROP TEMPORARY TABLE IF EXISTS results;
DROP TEMPORARY TABLE IF EXISTS temp2;
DROP TEMPORARY TABLE IF EXISTS temp1;

CREATE TEMPORARY TABLE temp1 AS
  select distinct ID, parentID
    from tasks
    where parentID = in_ID;

create TEMPORARY table results AS
  Select ID, parentID from temp1;

WHILE (select count(*) from temp1) DO
  create TEMPORARY table temp2 as
    select distinct ID, parentID 
      from tasks 
      where parentID in (select ID from temp1);

  insert into results select ID, parentID from temp2;
  drop TEMPORARY table if exists temp1;
  create TEMPORARY table temp1 AS
    select ID, parentID from temp2;
  drop TEMPORARY table if exists temp2;

END WHILE;


select * from results;

DROP TEMPORARY TABLE IF EXISTS results;
DROP TEMPORARY TABLE IF EXISTS temp1;

END $$
DELIMITER ;

kode ini akan mengembalikan semua orang tua ke kedalaman apa pun. Anda jelas dapat menambahkan bidang tambahan apa pun ke hasil

gunakan seperti ini

call getParents(9148)

misalnya