Oracle intersection | intersect - oracle tutorial - sql tutorial




Oracle intersection

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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.
Oracle and Intersect Operator

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


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

Oracle Union Vs UnionAll Vs Except Vs Intersect

Union UnionAll Except Intersect

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