-- a subquery is a query that is nested inside another query. -- SQL subqueries are also called nested queries or inner queries, while the SQL statement containing the subquery is typically referred ...
Find the latest order date for each customer, and retrieve customer details along with their last order date using a subquery: ...
operand is one of the following: constant is a number or a quoted character string (or other special notation) that indicates a fixed value. Constants are also called literals. Constants are described ...
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