Question

Django模型

class Imones(models.Model): # Clients
    id = models.AutoField(primary_key=True)
    pavadinimas = models.CharField(unique=True, max_length=45) # name

class Priekabos(models.Model): # Products
    id = models.AutoField(primary_key=True)
    sutarties_nr = models.CharField(unique=True, max_length=45) # contract_number
    vin = models.CharField(unique=True, max_length=45, verbose_name='VIN') # vehicle_identification_number
    imones = models.ForeignKey(Imones, models.DO_NOTHING, verbose_name='Įmonė') # client_id


class Saskaitos(models.Model): # Invoices
    id = models.AutoField(primary_key=True)
    apmoketa = models.BooleanField(default=0) # Paid in full
    imones = models.ForeignKey(Imones, models.DO_NOTHING) # client_id

MySQL查询：

SELECT distinct sutarties_nr, vin, apmoketa 
FROM priekabos pr
LEFT OUTER JOIN saskaitos sa
ON pr.imones_id = sa.imones_id
WHERE apmoketa=0 or apmoketa is null

有人可以解释如何将MySQL查询翻译成Django查询吗？我试过了：

obj = Saskaitos.objects.filter(apmoketa=0)
queryset = Priekabos.objects.filter(imones__in=obj.values('imones')).values()

但它没有按预期返回所有值。还有一个问题 - 如何使Imones.pavadinimas出现在queryset结果而不是普通id？现在看起来like that

如何将SQL查询转换为Django查询

0 个答案: