Bind Values
A bind value is a value that can be bound to a
placeholder declared within a SQL statement
This is similar to creating an on-the-fly SQL
statement such as:
        $sth = $dbh->prepare( "
                    SELECT name, location
                    FROM megaliths
                    WHERE name = " . $dbh->quote( $siteName ) . "
                " );
DBI: The Neophyte's Guide
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