The SQL UNION Operator The UNION operator is used to combine the result-set of two or more SELECT statements. • Each SELECT statement within UNION must have the same number of columns • The columns must also have similar data types • The columns in each SELECT statement must also be in the same order UNION Syntax SELECT column_name(s) FROM table1 UNION SELECT column_name(s) FROM table2;

The SQL UNION Operator +2 more

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