1. ubuntu 下如何查询子集的mysql版本: 方法一: 登录子集的mysql之后就会显示mysql版本: ***:~$ mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id Server version: (Ubuntu) #这就是版本号 Copyright (c) , , Oracle and/or its af…
使用python查询mysql数据库的时候,默认查询结果没有返回表字段名称,不方便使用.为了方便使用一般会选择将查询结果加上字段名称以字典组的方式返回查询结果. 实现如下: def dict_fetchall(cursor): "Return all rows from a cursor as a dict" columns = [col[0] for col in cursor.description] return [ dict(zip(columns, row)) for row…
单表查询: models.py: from django.db import models class Employee(models.Model): name = models.CharField(max_length=16) age = models.IntegerField() salary = models.IntegerField() province = models.CharField(max_length=32) dept = models.CharField(max_lengt…