Top "Window-functions" questions

A window function is a type of SQL operation that aggregates over a partition of the result set.

Pandas equivalent to SQL window functions

Is there an idiomatic equivalent to SQL's window functions in Pandas? For example, what's the most compact way to write …

python sql pandas window-functions
SQL Server Performance Comparison Between Over Partition By And Group By

Although a couple of questions were already posted in SO about the difference between Over Partition By and Group By, …

sql-server group-by window-functions sql-server-performance