摘要:
Conditional Expressions建立一些逻辑关系 The conditional expression classes from django.db import models class Client(models.Model): REGULAR = 'R' GOLD = 'G' P 阅读全文
摘要:
from django.db.functions import ... Cast() 转换类型 value = Value.objects.annotate(field_as_float=Cast('integer', FloatField())).get() print(value.field_a 阅读全文
摘要:
Custom Lookups 一个简单LookUp例子 Author.objects.filter(name__ne='Jack') Translate SQL "author"."name" 'Jack' 自定义 from django.db.models import Lookup from d 阅读全文