Friday, January 3, 2014

Joins in Sql

Joins in Sql can be classified as below:-

1) Inner Join:-Inner join return all the matching record between two table.
For e.g.

2.1) Left Outer Join:-Left outer join returns all the matching record between 2 table plus non matching record from left table.
For e.g.


2.2) Right Outer Join:-Right outer join returns all the matching record between 2 table plus non matching record from right table.
For e.g.


2.3) Full Join:-Full outer join returns all the matching record from both the table plus non matching record from both the tables.
For e.g.

3) Cross Join:-Cross join produces the Cartesian product of the 2 tables that are involved in the join operation.
For e.g.












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