Suppose we have two tables t1 and t2 with the following structures: CREATE TABLE t1( Note that the difference between UNION and JOIN e.g., INNER JOIN or LEFT JOIN is that the JOIN clause combines columns from multiple related tables, while UNION combines rows from multiple similar tables. The ORDER BY clause is applied to the combined result set, not within the individual result set.The GROUP BY and HAVING clauses are applied to each individual query, not the final result set. ![]()
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