6/12/2023 0 Comments Mysql union![]() ![]() The SQL syntax below shows a UNION ALL occurring between two different tables. Remember, UNION ALL combines the results of two or more SELECT statements, showing all values, including duplicates if they exist. The WHERE clause shown is an optional inclusion: The SQL syntax below shows a UNION occurring between two different tables the columns in both SELECT statements are of the same or matching data types. Remember, UNION combines the result set of two or more SELECT statements, showing only distinct values. Let’s look at them individually, starting with UNION. The syntax of both UNION variants is very similar. If you feel like you would benefit from a well-structured, comprehensive course that covers foundational SQL, consider this SQL Basics course from LearnSQL. ![]()
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