Post Success
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Consider the events table which contains information about the phases of writing a new social media post.
The action column can have values post_enter, post_submit, or post_canceled for when a user starts to write (post_enter), ends up canceling their post (post_cancel), or posts it (post_submit).
Write a query to get the post success rate for each day in the month of January 2020.
You can assume that a single user may only make one post per day.
Example:
Input:
events table
| Column | Type |
|---|---|
id |
INTEGER |
user_id |
INTEGER |
created_at |
DATETIME |
action |
VARCHAR |
url |
VARCHAR |
platform |
VARCHAR |
Sample:
user_id |
created_at |
event_name |
|---|---|---|
| 123 | 2019-01-01 | post_enter |
| 123 | 2019-01-01 | post_submit |
| 456 | 2019-01-02 | post_enter |
| 456 | 2019-01-02 | post_cancel |
Output:
| Column | Type |
|---|---|
dt |
DATETIME |
post_success_rate |
FLOAT |
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