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SQL Union Tutorial with Example (UNION ALL)

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SQL Union Tutorial with Example (UNION ALL)

In this video, we take a look at the UNION Operator in SQL by providing a tutorial and example. The UNION operator is used to vertically stack two or more SQL statement result sets together. Prerequisites for the Union to work is that each SQL Statement being "unioned" MUST: -have the same number of columns -must have the similar datatypes ...

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