我想对一些使用自定义 pyodbc 数据库连接的 django 视图进行单元测试

视图.py

from django.http import JsonResponse, HttpResponseNotFound, HttpResponseBadRequest, HttpResponseServerError, HttpResponseForbidden
from django.core.exceptions import SuspiciousOperation
from django.utils.datastructures import MultiValueDictKeyError
import os
import pyodbc

# Create your views here.

db_credentials = os.environ.get('DATABASE_CREDENTIALS')
dbh = pyodbc.connect(db_credentials)

def get_domains(request):
    if request.method == 'GET':
        args = request.GET
    elif request.method == 'POST':
        args = request.POST

    try:
        cursor = dbh.cursor()
        if 'owner' in args:
            owner = args['owner']
            cursor.execute('{call GET_DOMAINS_FOR_OWNER(?)}', owner)
        else:
            cursor.execute('{call GET_DOMAINS()}')
        result = cursor.fetchall()
        if(result):
            return JsonResponse([row[0] for row in result], …

我有一个名为bbc的国家/地区表(名称,地区,地区,人口,gdp)

我想要一张表格,其中列出了按地区划分的最大(人口最多)国家的地区,名称和人口.到目前为止,我已经尝试过这个:

SELECT region, name, MAX(population)
FROM bbc
GROUP BY region

它给了我一条错误消息:ORA-00979:不是GROUP BY Expression

我试图更改为GROUP BY区域,名称,但它没有给我正确的表格