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我有以下find_by_sql並且得到'太少的參數'錯誤。任何想法解決?想只保持它作爲一個的find_by_sqlrails 3,find_by_sql,date_format,參數太少錯誤
dates=find_by_sql(['select DATE(start_datetime) date_only, DATE_FORMAT(start_datetime,\'\%b \%D\') as formatted_date from events where area_id=1 group by date_only'])
THX