需求场景:
我写了条分组语句,
select name from car_machine_command group by name 然后该表有很多条相关的数据,我只想拿各个分组的一条数据看看即可 解决:可以使用窗口函数(Window Function)和 ROW_NU…
GitHub:GitHub - paperless-ngx/paperless-ngx: A community-supported supercharged version of paperless: scan, index and archive all your physical documents 在线演示:https://demo.paperless-ngx.com 官网:https://docs.paperless-n…