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:

sqlCopy code
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_id and 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 subscriptions table.

We then group the results by the feed_id and 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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