Subqueries are queries nested within another query, that return a single value, a row, a column, or a table, such as EXISTS, IN, ANY, or ALL. Using SQL functions and subqueries will help you ...

Learn how to use subquery in TiDB. For example, to query authors in the authors table whose age is greater than the average age, you can use a subquery as a comparison operator operand.

File: ecommerce_sample.sql Tables: customers, products, orders, order_details Each table is populated with sample data to simulate real-world transactions ...