In SQL, a query that searches for data in a table might not find any matching rows. This is a perfectly valid result, and it doesn't indicate an error in the query's syntax or structure. Imagine searching for customers who placed orders in a specific month. If no customers fit that criteria, the query will return an empty result set. This is not an error; it simply means no matching records exist. Understanding this is essential for writing robust queries that handle the possibility of no results. A query that returns no results is often a sign that the data you're looking for doesn't exist in the database, or that your search criteria are too restrictive. This is different from a query that produces an error, which usually indicates a problem with the query's structure or the database itself.
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