Joined Tables

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The JOIN syntax provides methods of combining information in tables.

INNER JOINs, OUTER JOINs and CROSS JOINs are supported.

The different ways in which the various join options can be combined makes the overall JOIN syntax quite convoluted, so to simplify the explanation, each variant will be described on its own with an accompanying syntax diagram.

In order to understand the JOIN syntax generally, it is important to appreciate the difference between an INNER JOIN and an OUTER JOIN. It is also important to be aware of the difference between JOIN ON, JOIN USING and NATURAL JOIN.

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