Feeds with 0 Subscribers
To determine which feeds have zero subscribers, you can use a SQL query that utilizes the LEFT JOIN and GROUP BY clauses. Here's an example query:
SELECT f.feed_id, f.feed_name FROM feeds AS f LEFT JOIN subscriptions AS s ON f.feed_id = s.feed_id GROUP BY f.feed_id, f.feed_name HAVING COUNT(s.user_id) = 0;
In this query, we are selecting the
feed_name from the
feeds table. We perform a left join with the
subscriptions table using the
feed_id as the join condition. The
LEFT JOIN ensures that all rows from the
feeds table are included in the result, regardless of whether there is a matching record in the
We then group the results by the
feed_name to aggregate the subscription records. Finally, the
HAVING clause filters the results and only includes feeds with a count of subscribers equal to zero.
Please note that the table and column names used in the query are placeholders, and you should replace them with the actual names of your tables and columns in your database.
You're welcome! I'm glad to hear that the query worked for you. If you have any more questions or need further assistance, feel free to ask. Happy coding!
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