Django Raw SQL 给我 TypeError 没有足够的参数

使用Django时，我们可以使用原始SQL查询来执行数据库操作。然而，有时候在使用原始SQL查询时，可能会遇到TypeError错误，错误信息可能会提示"没有足够的参数"。这种错误通常是由于我们在执行原始SQL查询时没有正确传递参数导致的。

python
from django.db import models
class Product(models.Model):
    name = models.CharField(max_length=100)
# 执行原始SQL查询
def get_product_name(product_id):
    query = 'SELECT name FROM myapp_product WHERE id = %s'
    products = Product.objects.raw(query, [product_id])
    for product in products:
        print(product.name)

python
from django.db import connection
# 执行原始SQL查询
def get_product_name(product_id):
    with connection.cursor() as cursor:
        query = 'SELECT name FROM myapp_product WHERE id = %s'
        cursor.execute(query, [product_id])
        product_name = cursor.fetchone()[0]
        print(product_name)

python
from django.db.models import RawSQL
# 执行原始SQL查询
def get_product_name(product_id):
    raw_sql = RawSQL('SELECT name FROM myapp_product WHERE id = %s', [product_id])
    products = Product.objects.filter(id=product_id).annotate(name=raw_sql)
    for product in products:
        print(product.name)