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A right outer join is a type of outer join that retrieves all rows from the right table and the corresponding values from the left table. It works exactly opposite to a left outer join. The right outer join keeps all the rows from the right table and brings in any matching rows from the left table. On a matching element not found in the left table, NULL is represented in that case.
A right outer join is used when you want to return all records from the right table and only matching records from the left table. This means that if there is no match between the two tables, then the result will still include all records from the right table.
Here’s an example of how a right outer join works:
“`sql
SELECT *
FROM Table1
RIGHT OUTER JOIN Table2
ON Table1.ID = Table2.ID;
“`
In this example, all records from Table2 will be returned along with any matching records from Table1. If there are no matching records in Table1, then NULL values will be returned for those columns.
Here are some websites that discuss What Is The Function Of A Right Outer Join that you might find useful:
– https://learnsql.com/blog/what-is-outer-join/
– https://www.airportsindia.org.in/questions/what-is-the-function-of-a-right-outer-join/
– https://tutorialdeep.com/sql/sql-right-outer-join/
– https://www.geeksforgeeks.org/sql-outer-join/
– https://www.w3schools.com/Sql/sql_join_right.asp
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