-- 查询子节点 含自己
WITH recursive temp AS(
SELECT id FROM gg_zz WHERE id = ' '
UNION ALL
SELECT zz.id FROM gg_zz zz,temp t WHERE zz.fjd=t.id
)
SELECT id FROM temp
-- 查询父节点 含自己
WITH recursive temp AS(
SELECT fjd FROM gg_zz WHERE id = ' '
UNION ALL
SELECT zz.fjd FROM gg_zz zz,temp t WHERE zz.id=t.fjd
)
SELECT fjd FROM temp