Django 之 查看执行的sql语句

# coding:utf-8
from django.db import models

# Create your models here.   
class Province(models.Model):
    name = models.CharField(u‘省份名称‘,max_length=32)
    code = models.IntegerField(verbose_name=u‘区号‘, unique=True)
    
    def __unicode__(self):
        return self.name
    
    class Meta:
        verbose_name = u‘省份列表‘
        verbose_name_plural = u‘省份列表‘

>>> from core.models import Province
>>> print Province.objects.all().query
SELECT `core_province`.`id`, `core_province`.`name`, `core_province`.`code` FROM `core_province`

>>> from core.models import Province
>>> p = Province(name=u‘广州‘, code=‘020‘)
>>> p.save().query
Traceback (most recent call last):
  File "<console>", line 1, in <module>
AttributeError: ‘NoneType‘ object has no attribute ‘query‘
>>> p.save()

>>> from core.models import Province
>>> from django.db import connection
>>> p = Province(name=u‘河南‘, code=‘0371‘)
>>> p.save()
>>> print connection.queries
[{u‘time‘: u‘0.439‘, u‘sql‘: u"INSERT INTO `core_province` (`name`, `code`) VALUES (‘\u5e7f\u5dde‘, 20)"}, 
 {u‘time‘: u‘0.056‘, u‘sql‘: u"UPDATE `core_province` SET `name` = ‘\u5e7f\u5dde‘, `code` = 20 WHERE `core_province`.`id` = 3 "}, 
 {u‘time‘: u‘0.102‘, u‘sql‘: u"INSERT INTO `core_province` (`name`, `code`) VALUES (‘\u6cb3\u5357‘, 371)"}]