fix operation column def for postgresql
fix operation column def for postgresql

benhowell/pycsw,benhowell/pycsw,geopython/pycsw,tomkralidis/pycsw,kalxas/pycsw,ricardogsilva/pycsw,tomkralidis/pycsw,mwengren/pycsw,mwengren/pycsw,rouault/pycsw,bukun/pycsw,ocefpaf/pycsw,ricardogsilva/pycsw,PublicaMundi/pycsw,PublicaMundi/pycsw,kevinpdavies/pycsw,bukun/pycsw,kalxas/pycsw,rouault/pycsw,ingenieroariel/pycsw,geopython/pycsw,ckan-fcd/pycsw-fcd,bukun/pycsw,kevinpdavies/pycsw,ingenieroariel/pycsw,ckan-fcd/pycsw-fcd,tomkralidis/pycsw,geopython/pycsw,ocefpaf/pycsw,kalxas/pycsw,ricardogsilva/pycsw