Data Interview Qs - Data Interview Questions: Problem #65
Breaking down customer transactions in SQL
SQL Database Querying Window Function
Given the following table containing customer transaction data:
Table name: orders
| order_id | channel | date | month | revenue | |
|---|---|---|---|---|---|
| 0 | 1 | Online | 2018-09-01 | 09 | 100 |
| 1 | 2 | Online | 2018-09-03 | 09 | 125 |
| 2 | 3 | In_store | 2018-10-11 | 10 | 200 |
| 3 | 4 | In_store | 2018-08-21 | 08 | 80 |
| 4 | 5 | Online | 2018-08-13 | 08 | 200 |
| 5 | 6 | Online | 2018-10-29 | 10 | 100 |
Write SQL queries to answer the following:
- Return all rows in the data table with transaction values over $101.
- Return all rows in the data table with transaction values over $101 that were purchased through the Online channel.
- Return all rows in the data table with transaction values that were either over $101 OR were purchased In_store.
- Return the minimum transaction amount for both channels as well as the corresponding order id.
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