我是SO和postgres的新手所以请原谅我的无知.尝试使用类似于本文中的解决方案在postgres中获取图表的集群在PostgreSQL中查找集群给定节点
唯一的区别是我的id是一个UUID,我使用varchar(255)来存储这个id
当我尝试运行查询时,我收到以下错误(但不知道如何投射):
ERROR: recursive query "search_graph" column 1 has type character varying(255)[] in non-recursive term but type character varying[] overall
SQL状态:42804提示:将非递归项的输出强制转换为正确的类型.性格:81
我的代码(与上一篇文章基本相同):
WITH RECURSIVE search_graph(path, last_profile1, last_profile2) AS (
SELECT ARRAY[id], id, id
FROM node WHERE id = '408d6b12-d03e-42c2-a2a7-066b3c060a0b'
UNION ALL
SELECT sg.path || m.toid || m.fromid, m.fromid, m.toid
FROM search_graph sg
JOIN rel m
ON (m.fromid = sg.last_profile2 AND NOT sg.path @> ARRAY[m.toid])
OR (m.toid = sg.last_profile1 AND NOT sg.path @> ARRAY[m.fromid])
)
SELECT DISTINCT unnest(path) FROM …