(PHP 4 <= 4.1.0, PECL dbplus >= 0.9)
dbplus_unselect — Remove a constraint from relation
Calling dbplus_unselect() will remove a constraint previously set by dbplus_find() on relation.
A relation opened by dbplus_open().
This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk.