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What are the type of joins? When do we use Outer and Self joins?

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What are the type of joins? When do we use Outer and Self joins?..

Answer / chandra rekha

Types of joins:
->Inner join
->Outer join->1.Left Outer join
2.Right Outer join
->Cross join
->Equi join
->Natural join
->Self join

Outer join:-When we need all rows from one table and some
rows from the other table

Self join:-When one row in a table correlated with other
rows in the same table

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What are the type of joins? When do we use Outer and Self joins?..

Answer / shivanibehere

For the joins you can go for this link ----
http://www.databasejournal.com/features/oracle/article.php/3
527921

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What are the type of joins? When do we use Outer and Self joins?..

Answer / shivanibehere

http://www.tomjewett.com/dbdesign/dbdesign.php?
page=jointypes.php&imgsize=medium

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