First, I know nothing about PLC's, but I was wondering is there a way
to extract data from a SQL database file, feed that to a PLC is some
manner, and then have the PLC trigger a diverter gate based on the
value in the table exceeding a certain value, to divert parts to
another location.

Am I off base, or is there something out there that will allow or help
me to do this. Any help would be greatly appreciated.