如何查找从psql中的另一个表继承的子表

“来自SQL查询”是什么意思?这是不是意味着 SELECT 来自 pg_inherits 对你来说不够好吗?

SELECT pg_inherits.*, c.relname AS child, p.relname AS parent
FROM
    pg_inherits JOIN pg_class AS c ON (inhrelid=c.oid)
    JOIN pg_class as p ON (inhparent=p.oid);

如果还需要架构名称:

SELECT cn.nspname AS schema_child, c.relname AS child, pn.nspname AS schema_parent, p.relname AS parent
FROM pg_inherits 
JOIN pg_class AS c ON (inhrelid=c.oid)
JOIN pg_class as p ON (inhparent=p.oid)
JOIN pg_namespace pn ON pn.oid = p.relnamespace
JOIN pg_namespace cn ON cn.oid = c.relnamespace
WHERE p.relname = 'your table name' and pn.nspname = 'your schema name'

如果要从主分区中查找所有子分区,只需执行如下操作:

SELECT relname
FROM pg_class,pg_inherits
WHERE pg_class.oid=pg_inherits.inhrelid
AND inhparent
IN (SELECT oid FROM pg_class WHERE relname='your_master_partition')
ORDER BY relname;