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In This Tutorial You will learn
What is Natural Join? How to use natural join.
Natural Join with ON clause and Natural Join with Using clause
Natural Joins with the USING Clause
• If several columns have the same names but the data
types do not match, natural join can be applied by using
the USING clause to specify the columns that should be
used for an equijoin.
• Use the USING clause to match only one column when
more than one column matches.
• Do not use a table name or alias in the referenced
columns.
• The NATURAL JOIN and USING clauses are mutually
exclusive.
Tool used in this tutorial is SQL Developer.
This tutorial series is part of SQL expert exam certification training. if you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training.
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This is Manish from RebellionRider.com
27 окт 2024