获取PostgreSQL中视图/表所依赖的表的列表

Question

在PostgreSQL中,有没有办法根据外键的使用和对给定表的访问来获取视图/表所依赖的所有表？

基本上,我希望能够使用脚本复制视图/表的结构,并希望能够自动获取我还需要复制的表列表,以便一切仍然正常工作.

这种反应似乎朝着正确的方向发展,但并没有给出我期望/需要的结果.有什么建议？

Answer 1

使用Andy Lester的信息,我能够提出以下查询来检索我需要的信息.

获取外键引用的表:

SELECT cl2.relname AS ref_table
FROM pg_constraint as co
JOIN pg_class AS cl1 ON co.conrelid=cl1.oid
JOIN pg_class AS cl2 ON co.confrelid=cl2.oid
WHERE co.contype='f' AND cl1.relname='TABLENAME'
ORDER BY cl2.relname;

获取表中的视图或规则引用的表:

SELECT cl_d.relname AS ref_table
FROM pg_rewrite AS r
JOIN pg_class AS cl_r ON r.ev_class=cl_r.oid
JOIN pg_depend AS d ON r.oid=d.objid
JOIN pg_class AS cl_d ON d.refobjid=cl_d.oid
WHERE cl_d.relkind IN ('r','v') AND cl_r.relname='TABLENAME'
GROUP BY cl_d.relname
ORDER BY cl_d.relname;