假设我有一个多个字段,并且说我有x个元素。Distinct_Alert.objects.filter(alert_type=alert_type, entities__in=[entity[0] for entity in entities]).all() except self.model.DoesNotExist:
是否有一种使用hook_query_alter()删除重复项的方法?在视图中运行的sql查询如下:
SELECT node.changed AS node_changed, node.nid AS nid, SUM(search_index.score * search_total.count如果我将'GROUP BY search_index.sid,score,node_changed,nid‘替换为GROUP nid,则查询非常有效。我怎样才能做到这一点?