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SQL UNION vs UNION ALL Explained by Ahsan Rehman is a document available to read on EtoBox.

What is SQL UNION vs UNION ALL Explained about?

The document explains the SQL commands UNION and UNION ALL for combining results from two SELECT statements. UNION removes duplicate rows while UNION ALL includes all records, including duplicates. It also compares the performance and use cases for both commands.

Author

Ahsan Rehman

Language

EN