查询PostgreSQL占多大内存的操作

我就废话不多说了，大家还是直接看代码吧~

select pg_size_pretty(pg_relation_size(‘cuiyonghua.top_iqiyi_info’));
select pg_size_pretty(pg_relation_size(‘cuiyonghua.top_mgtv_info’));
select pg_size_pretty(pg_relation_size(‘cuiyonghua.top_tencent_info’));
select pg_size_pretty(pg_relation_size(‘cuiyonghua.top_zhihu_info’));