PG如何查看分区表大小

查询分区表

工作中遇到pg分区表增长很快，需要分析分区表大小进行维护，网上搜的和 AI 回答的都不靠谱，这里记录一下。

SELECT
  table_schema || '.' || table_name AS partitioned_table,
  pg_size_pretty(pg_total_relation_size("'" || table_schema || "." || table_name || "'")) AS total_size
FROM
  information_schema.tables
WHERE
  table_name like 'your_schema%' -- 替换为你的schema名称，分区后缀适用%匹配
ORDER BY
  pg_total_relation_size("'" || table_schema || "." || table_name || "'") DESC;