python django 原生sql 获取数据的例子

node2:/django/mysite/blog#cat views.py1, # -*- coding: utf-8 -*-from __future__ import unicode_literals# from django.shortcuts import render, render_to_responsefrom .models import *# Create your views here.from django.http import HttpResponsefrom django.template import loaderimport MySQLdb def query():  conn= MySQLdb.connect(    host='localhost',    port = 3306,    user='root',    passwd='1234567',    db ='tlcb',    )  cur = conn.cursor()  a=cur.execute("select title,body, DATE_FORMAT(timestamp,'%Y~%m~%d %k.%i.%s') A from blog_blogpost")  info = cur.fetchall()  return info  cur.close()  conn.close() def archive(req): print 'aaaaaaaaaaaaaaaaaaaaaaaaaaa' print req print type(req) print req.GET print '#############################' print req.GET['aa'] print req.GET['cc'] print '#############################' print 'aaaaaaaaaaaaaaaaaaaaaaaaaaa'# get all blogpost objects posts =query()  print posts print type(posts) #print blog_list template = loader.get_template('archive.html') context = { 'posts':posts } print '------------------------------------------' print HttpResponse(template.render(context, req)) print '------------------------------------------' return HttpResponse(template.render(context, req))node2:/django/mysite/blog#  node2:/django/mysite/blog/templates#vi archive.htmlnode2:/django/mysite/blog/templates#node2:/django/mysite/blog/templates#node2:/django/mysite/blog/templates#node2:/django/mysite/blog/templates#cat archive.html{% extends "base.html" %} {% block content %}   {% for post in posts %}   <h2>{{ post.0 }}</h2>   <p>{{ post.1 | date:"1,F jS"}}</p>   <p>{{ post.2 }}</p>   {% endfor %} {% endblock %}   (('dd', 'ddd', '2017~11~24 8.31.42'), ('66666666', '66666', '2017~11~24 8.35.25'), ('777777777', '77777777777', '2017~11~27 1.46.15'))<type 'tuple'>       在自定义 model 方法和模块级方法里,你可以自由的执行自定义SQL语句. 对象 django.db.connection 表示当前的数据库连接. 调用connection.cursor() 得到一个游标对象. 然后调用 cursor.execute(sql, [params])``以执行 SQL 语句, 使用 ``cursor.fetchone() 或cursor.fetchall() 得到结果集. 下面是一个例子:def my_custom_sql(self):   from django.db import connection   cursor = connection.cursor()   cursor.execute("SELECT foo FROM bar WHERE baz = %s", [self.baz])   row = cursor.fetchone()   return row      如果你的SQL语句改变了数据库中的数据 -- 比如你使用了 DELETE 或 UPDATE 语句. 你需要调用 connection.commit() 来使你的修改生效.例子:def my_custom_sql2(self):   from django.db import connection   cursor = connection.cursor()   cursor.execute("DELETE FROM bar WHERE baz = %s", [self.baz])   connection.commit()