A subquery, also known as a nested query, is a query nested within another SQL statement. It's used to retrieve data that will be used as a condition or result within the outer query.

LATERAL SUBQUERY is a subquery that is preceded by the keyword LATERAL. It provides a way to reference columns in the preceding FROM clause. Without the LATERAL keyword, subqueries can only refer to ...

I'm trying to assign rows in a table to a random variable entirely in Transact SQL (This is MS SQL Server 2000, sp3). I've got it working perfectly except I can't use a variable inside my subquery ...

For example, you can use a subquery to find the average salary of employees in a department, and then compare it with the salaries of individual employees in the same department.