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流程:自我介绍;
举例介绍一个用到tableau的project;. 1point3acres
举例介绍一个用R/Python做过的分析;. 1point3acres
写SQL;
对面试官有什么问题 ..
因为我电脑的故障没能上他要求的网站写code,于是面试官大哥让我分享屏幕然后把table和问题发到对话框里让我在notes pad里写。。以下是table和带的4个问题,造福大家求加大米。。
Table:
+------------+-------------+-------------------+------------------+------------------+| companyid | signupdate | subscriptiondate | terminationdate | year | month+------------+-------------+-------------------+------------------+------------------+| 13343128 | 2020-02-13 | 2020-02-14 | NULL || 13343124 | 2020-02-13 | 2020-02-14 | NULL || 13343100 | 2020-02-13 | 2020-02-14 | NULL || 13343090 | 2020-02-13 | NULL | 2020-02-13 || 13343074 | 2018-02-13 | 2018-02-14 | NULL || 13342758 | 2018-03-23 | 2018-03-24 | NULL || 13342732 | 2018-04-05 | 2018-04-05 | NULL || 13342730 | 2018-09-13 | NULL | 2018-09-13 || 11342720 | 2017-01-05 | 2017-01-06 | 2018-02-13 || 11343128 | 2017-02-08 | 2017-02-08 | 2018-08-13 || 11342610 | 2017-03-23 | 2017-04-23 | 2018-11-21 || 11342720 | 2017-03-29 | 2017-03-30
问题:. 1point 3 acres
1. How many new subscribers have we received every month starting Jan 2017?
2. How does that metric compare to the same month prior year?
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