settings文件如下：

DATABASES = { 'default': { 'ENGINE': 'django.db.backends.sqlite3', 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'), }, 'db1': { # 配置第二个数据库节点名称 'ENGINE': 'django.db.backends.oracle', 'NAME': 'devdb', 'USER': 'hysh', 'PASSWORD': 'hysh', 'HOST': '192.168.191.3', 'PORT': '1521', },}

查找Django的文档：

from django.db import connection def my_custom_sql(self): with connection.cursor() as cursor: cursor.execute("UPDATE bar SET foo = 1 WHERE baz = %s", [self.baz]) cursor.execute("SELECT foo FROM bar WHERE baz = %s", [self.baz]) row = cursor.fetchone() return row

上述方法是设置中如果有多个数据库，会默认使用 default，当你想使用指定的数据库连接时，引入的对象就变成了connections ！

from django.db import connection def my_custom_sql(self): with connection.cursor() as cursor: cursor.execute("UPDATE bar SET foo = 1 WHERE baz = %s", [self.baz]) cursor.execute("SELECT foo FROM bar WHERE baz = %s", [self.baz]) row = cursor.fetchone() return row

之后再进行操作。

补充知识：Django多数据源接入类

from rest_framework.generics import GenericAPIViewfrom rest_framework.response import Responsefrom rest_framework import statusfrom django.db import transactionfrom .contants import db_dictcontants.py的内容（import cx_Oracleimport pymysql# 定义一个数据库类型&引擎的字典,db_dict = {'mysql':pymysql,'Oracle':cx_Oracle}）from .models import DataSystem,Ruleclass DBconnectView(GenericAPIView): __DBtype = db_dict def get(self,request,pk,rule_id): # 通过传入的id进行对应的数据库链接 self.datas = DataSystem.objects.get(pk=pk) self.url = self.datas.url self.username = self.datas.username self.password = self.datas.password_enc self.DBname = self.datas.name self.DBtype = self.__DBtype[self.datas.type] # 获取check_code规则 self.ruledatas = Rule.objects.get(id=rule_id) self.check_code = self.ruledatas.check_code # db = __import__(self.DBtype) try: conn = self.DBtype.connect(host=self.url,user=self.username,password=self.password,database=self.DBname) # 链接成功后创建一个游标 cs_ms = conn.cursor() except Exception as e: raise e else: # 明显的开启事务 with transaction.atomic(): # 在安全的地方，创建保存点，将来操作数据库失败回滚到此 save_id = transaction.savepoint() try: # 获取一个元组 db_ret = cs_ms.execute(self.check_code) except Exception as e: transaction.savepoint_rollback(save_id) raise e else: db_set = db_ret.fetchone() # transaction.savepoint_commit(save_id) finally: cs_ms.close() conn.close() return Response({'pk':pk,'rule_id':rule_id})

以上这篇django 链接多个数据库 并使用原生sql实现就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。