MemSQL以CSV形式从数组对象中获取密钥

import csv
import memsql

# 连接到MemSQL数据库
conn = memsql.connect(host='your_host', port=your_port, user='your_user', password='your_password')
cursor = conn.cursor()

# 查询数据
query = "SELECT * FROM your_table"
cursor.execute(query)

# 获取查询结果
rows = cursor.fetchall()

# 将结果转换为CSV格式
csv_output = csv.writer(open("output.csv", "w", newline='', encoding='utf-8'))
csv_output.writerow([i[0] for i in cursor.description])  # 写入列名
csv_output.writerows(rows)  # 写入数据

# 关闭连接
cursor.close()
conn.close()

query = "SELECT key_column FROM your_table"