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What is Oracle INTERSECT ?

• The Oracle INTERSECT operator is used to return the results of 2 or more SELECT statements.
• However, it only returns the rows selected by all queries or data sets.
• If a record exists in one query and not in the other, it will be omitted from the INTERSECT results.

Syntax:

SELECT column_name
FROM Table1
INTERSECT
Select column_name
 FROM Table_2;

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Example:

SELECT name
FROM wikitechy_employee4
INTERSECT
Select name 
FROM wikitechy_employee5;

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Screenshot:

• For better understanding we are using the sample table called wikitechy_employee4

1. Similarly, we are selecting another table with 3 columns in it.

1. Using INTERSECT Statement, we are selecting the common field from the above table,

Oracle Union Vs UnionAll Vs Except Vs Intersect

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