An error occured in: ERROR: invalid reference to FROM-clause entry for table "ip_powiat" LINE 9: ....cs_id AND cat.speccat_id=744 AND city.powiat_id=ip_powiat.... ^ HINT: Perhaps you meant to reference the table alias "powiat". Query: SELECT count(DISTINCT(card.card_id)) as ilosc FROM ip_cs cat, ip_card_cs cc, ip_powiat powiat, ip_card card, ip_city city WHERE city.city_id=card.city_id AND card.card_status = '0' AND card.card_id=cc.card_id AND cc.cs_id=cat.cs_id AND cat.speccat_id=744 AND city.powiat_id=ip_powiat.powiat_id AND ip_powiat.state_id=1 AND city.powiat_id=38 AND city.city_id=278
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