Web Reference: Jul 23, 2025 · There are many methods to check the data if it exists like IF EXISTS, IF NOT EXISTS, or using the WHERE clause. In this article, we will discuss the 'IF NOT EXISTS' alternative to check and insert a row of data into a table or to bulk insert data into a table. A single insert statement is always a single transaction. It's not as if the SQL Server evaluates the subquery first and then at some later point, and without holding a lock, goes on to do the insert. May 17, 2025 · In SQL, we often need to ensure that we insert records into a table only if they don’t already exist. This operation, known as insert if not exists, helps to maintain database integrity by preventing duplicate entries.
YouTube Excerpt: In this tutorial, Dr. Wolfe breaks down the
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