Excel图表制作烦？SQL+PowerBI做出高级动态看板

SELECTc.客户ID, c.客户名称, o.订单金额 LEFTJOIN订单表 o ONc.客户ID =o.客户ID ...
Hackaday

Implementing A Kalman Filter In PostgreSQL To Smooth GPS Data

Usually databases are treated primarily as fairly dumb data storage systems, but they can be capable of much more. Case in ...