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UNION Operator


It is used to combine the two or more results. The each SELECT statement must have same no. of columns, same datatypes and in the same order.


SELECT column_name FROM table1


SELECT column_name FROM table2;

  • The Union displays unique values by default. To get the duplicate values we use UNION ALL.

SELECT column_name FROM table1


SELECT column_name FROM table2;


SELECT City FROM Student_details


SELECT City FROM College;

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