Average Order Value
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Given three tables, representing customer transactions and customer attributes:
Write a query to get the average order value by gender.
Note: We’re looking at the average order value by users that have ever placed an order. Additionally, please round your answer to two decimal places.
Example:
Input:
transactions table
| Column | Type |
|---|---|
id |
INTEGER |
user_id |
INTEGER |
created_at |
DATETIME |
product_id |
INTEGER |
quantity |
INTEGER |
users table
| Column | Type |
|---|---|
id |
INTEGER |
name |
VARCHAR |
sex |
VARCHAR |
products table
| Column | Type |
|---|---|
id |
INTEGER |
name |
VARCHAR |
price |
FLOAT |
Output:
| Column | Type |
|---|---|
sex |
VARCHAR |
aov |
FLOAT |
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