fix quoting for PostgreSQL backends (#575) (#629)
fix quoting for PostgreSQL backends (#575) (#629)


tomkralidis/pycsw,geopython/pycsw,kalxas/pycsw,bukun/pycsw,ricardogsilva/pycsw,bukun/pycsw,kalxas/pycsw,tomkralidis/pycsw,geopython/pycsw,ricardogsilva/pycsw,kalxas/pycsw,bukun/pycsw,geopython/pycsw,ricardogsilva/pycsw,tomkralidis/pycsw