摘要：
select uuid from(select *,row_number() over(partition by productid order by time_stamp desc)rn from "automation".data)t where rn=1 阅读全文
摘要：
连上数据库 执行ALTER USER postgres WITH PASSWORD 'postgres'; 然后重启服务 查询数据库占用空间大小 select pg_size_pretty(pg_database_size('postgres')); 阅读全文