ORM模型类也可以使用原生sql

tsql = "select count(c.id) as tcount from course as c  where 1=1"
tsql = db.session.execute(tsql)
print(tsql)

此时tsql对象是<sqlalchemy.engine.cursor.CursorResult object at 0x00000000060F0C50>这样一串可循环对象，只要对它进行for循环就可以获取到我们想要的json格式数据了

total = 0
for i in tsql:
    total = i[0]
return jsonify({ "total": total})

如果要获取多个对象时只需要把 total = 0 改为 total = [] 再将for循环里的赋值改一下就可以了

total = []
d = {
            "id":i[0],
            "create_time":i[1],
            "update_time":i[2],
            "name":i[3],
            "url":i[4],
            "descrip":i[5],
            "tcount":i[6],
            "views":i[7],
            "is_publish":i[8],
            "ctype":i[9]
        }
        total.append(d)