Question

我有一个CustomerTable，在表中列出了CustomerID。我想创建一个名为STATUS的新列，以检查他是否是表中存在前几行的新客户，如果表中已经存在记录，则为新客户TRUE返回FALSE。有没有一种方法可以使用dplyr完成。另外，我不想用CUSTOMER_ID的sort表

## Input would be just the CUSTOMER_ID's from the below table and the Output STATUS is appended to it.

   CUSTOMER_ID STATUS
1:         101  FALSE
2:         102  FALSE
3:         103  FALSE
4:         101   TRUE
5:         104  FALSE
6:         105  FALSE
7:         106  FALSE
8:         103   TRUE
9:         104   TRUE

Answer 1

因为我无法删除问题，所以只是从评论中拿出小费并发布了答案。

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检查表中是否有Customer_Id的先前条目，并返回其Status

1 个答案: