如何在知道主键值的情况下获取特定行？

SELECT * FROM table_name WHERE primary_key = value;

SELECT * FROM students WHERE id = 1;

import pymysql

# 连接数据库
conn = pymysql.connect(host='localhost', user='root', password='password', db='database_name')

# 创建游标
cursor = conn.cursor()

# 执行查询
cursor.execute('SELECT * FROM students WHERE id = %s', (1,))

# 获取查询结果
result = cursor.fetchone()

# 关闭游标和连接
cursor.close()
conn.close()

# 输出查询结果
print(result)