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One of the great
characteristics of SQL
(Structured Query Language)
is the fact that one can
develop access and modify
data across various tables.
There are several benefits
to this, including greater
ease of manipulation,
increased speed of access,
and reduced data redundancy.
In MySQL (as well as many
other SQL languages),
this is accomplished via the
join command. This tutorial
takes a look at several
types of the join command
including The Cross Join,
The Equi-join, The Left
Join, and Self-joins.
Date: Nov, 09 1999 |