我有一个数据库,拥有几个含有某些信息的领域的记录。
获取表内所有数据,对一些过滤器I d进行匹配:
records = Record.objects.filter(fieldA= a )
记录,I suppose,是QuerySet的标语,载有“记录清单”。 这是否正确?
现在我要说一个领域的价值观清单。
如果我这样做的话:
records = Record.objects.filter(fieldA= a ).only( fieldB )
我仍然抱着疑虑,但现在有一些推迟的领域。 我想的只是一份我想要占领一个卡地的价值观清单。 B. 出席情况 我还希望能够 gr清战地的独特价值,我相信,我只能 over弄每个记录,撤出战地,如果名单上没有的话,就添加到名单上,但情况较好。
感谢!
EDIT:我想我所期待的是什么。
Record.objects.values_list( fieldB )
Yup发现: Values_list 。 这里指的是:https://docs.djangoproject.com/en/dev/ref/models/querysets/# Values-list。
下面请 James。 在这里,它更加突出。 这肯定是我所期待的。
我希望一份价值清单。 使用<代码>QuerySet方法。 为了获得一份价值清单,我需要选择<代码>flat=True。
Record.objects.values_list( fieldB , flat=True)
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