A subquery is a query that is nested inside a SELECT , INSERT , UPDATE , or DELETE statement, or inside another subquery. ... A subquery can be used anywhere an expression is allowed. In this example ...

I need to write a SQL select query that joins a couple of tables. No problem. However, I also need to join that query with the results of another query. This is possible in SQL with a subquery. I am ...

The repository includes a single document, Join-Subquery Questions.pdf, which outlines 50 SQL problems. The SQL queries that solve these problems are also included ...