This public view returns information on user-defined rules for identifying account or contact duplicates in lists, and what priority reules should be used when removing these duplicates.
SELECT R.LIST_RULE_ID , R.LIST_RULE_NAME , R.LIST_RULE_TYPE , RU.LIST_HEADER_ID FROM AMS_LIST_RULES_ALL R , AMS_LIST_RULE_USAGES RU WHERE R.LIST_RULE_ID = RU.LIST_RULE_ID AND RU.LIST_RULE_ID = (SELECT MAX(LIST_RULE_ID) FROM AMS_LIST_RULE_USAGES WHERE LIST_HEADER_ID = RU.LIST_HEADER_ID)