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Oracle INTERSECT Operator

In Oracle, INTERSECT Operator is used to return the results of 2 or more SELECT statement. It picks the common or intersecting records from compound SELECT queries.

Syntax

Parameters

1) expression1, expression2, ... expression_n: It specifies the columns that you want to retrieve.

2) table1, table2: It specifies the tables that you want to retrieve records from.

3) conditions: it specifies the conditions that must be fulfilled for the records to be selected.

Oracle INTERSECT Example: (with single expression)

Suppliers Table

Oracle Intersect 1

Suppliers Data

Oracle Intersect 2

Order_details Table

Oracle Intersect 3

Order_details Data

Oracle Intersect 4

In the above example, the supplier_id appears in both the suppliers and order_details table. Now the common entries will be returned in the result set.

Output

Oracle Intersect

Oracle INTERSECT Example: (with multiple expressions)

Supplier Table

Oracle Intersect 5

Supplier Data

Oracle Intersect 6

Customer Table

Oracle Intersect 7

Customer Data

Oracle Intersect 8

Output

Oracle Intersect 9

The above example returns the records from the supplier table where the supplier_id, last_name and first_name values match the customer_id, last_name, and first_name value of customer table.





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