Average Revenue per Customer
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Let’s say that we work for a B2B SaaS company that has been around for three years.
The company has two revenue lines (product_type): the first is labeled as "service" and is a consulting type model where clients are serviced on an hourly rate for a one-off project.
The second revenue line is "software", which clients can purchase on an ongoing subscription basis.
Given a table of payments data, write a query to calculate the average revenue per client.
Note: Round the result to two decimals.
Example:
Input:
payments table
| Column | Type |
|---|---|
id |
INTEGER |
user_id |
NTEGER |
created_at |
DATETIME |
amount_per_unit |
FLOAT |
quantity |
INTEGER |
product_type |
VARCHAR |
Output:
| Column | Type |
|---|---|
average_lifetime_revenue |
FLOAT |
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