我的數據集是由下面的代碼星火數據集相關
+------+---------------+----+
| City| Timestamp|Sale|
+------+---------------+----+
|City 3|6/30/2017 16:04| 28|
|City 4| 7/4/2017 16:04| 12|
|City 2|7/13/2017 16:04| 8|
|City 4|7/16/2017 16:04| 21|
|City 4| 7/3/2017 16:04| 24|
|City 2|7/17/2017 16:04| 34|
|City 3| 7/9/2017 16:04| 13|
|City 3|7/18/2017 16:04| 26|
|City 3| 7/6/2017 16:04| 16|
|City 3|7/15/2017 16:04| 29|
|City 4|7/18/2017 16:04| 39|
|City 2| 7/1/2017 16:04| 19|
|City 2|7/18/2017 16:04| 19|
|City 4| 7/4/2017 16:04| 24|
|City 2| 7/4/2017 16:04| 9|
|City 4|7/15/2017 16:04| 20|
|City 3|7/12/2017 16:04| 19|
|City 1| 7/9/2017 16:04| 13|
|City 1|7/13/2017 16:04| 25|
|City 4|7/10/2017 16:04| 10|
+------+---------------+----+
我們需要計算在本週底部的每一City
的Sale
總和看起來像這樣。
火花斯卡拉提供解決方案 –