Here are a few question-based titles that fit the provided text snippet: Short & Direct: * How to Retrieve Aggregate Counts from Multiple Tables using MySQL Left Joins? * Can MySQL Left Joins He

Retrieving Aggregate Counts from Multiple Tables Using MySQL Left Joins

In SQL, the challenge of joining tables to retrieve aggregate counts from multiple sources is often encountered. In this scenario, we have three tables: Messages, Topics, and Stars_Given, and we aim to create a new table, Topic_Review, that includes aggregate counts from these tables.

To achieve this, we can leverage the left join operation. Left joins allow us to retrieve all records from the left table, regardless of whether they have matching records in the right table. In our case, we can perform left joins to retrieve counts for each topic, even if the topics have no corresponding records in the other tables.

The following query utilizes left joins to create the desired table:

select
  t.Topic,

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