> 原文:[https://www . geesforgeks . org/SQL-eqi-join-and-non-eqi-join/](https://www.geeksforgeeks.org/sql-equi-join-and-non-equi-join/) 在[左、右、全连接 ...
SUM(monthly_cases) over (Order by record_month rows between unbounded preceding and 1 preceding), monthly_cases*100.0/SUM(monthly_cases) over (Order by record_month ...