ROW_NUMBER() Window Function — find duplicate values.

Many times, we do not want duplicate rows or values in our SQL tables. On the other hand, in some situations, it does not matter if there are duplicates present. For whatever reason, suppose duplicates have found their way into one of your tables. How can you find them quickly and easily? The ROW_NUMBER() Window function is a fantastic tool to use. Continue reading and see example queries you can apply to your own tables and find those duplicates…




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Joshua Otwell

Joshua Otwell

SQL and PHP/CodeIgniter Developer. Growing through Technical Writing and Blogging. Sign-up for my free newsletter here:

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