如何在SQL查询更新中传递变量

import MySQLdb

# 连接数据库
conn = MySQLdb.connect(host='localhost', user='username', password='password', db='database')

# 创建游标对象
cursor = conn.cursor()

# 定义SQL语句
sql = "UPDATE table SET column = %s WHERE condition = %s"

# 执行查询
cursor.execute(sql, (value1, value2))

# 提交事务
conn.commit()

# 关闭连接
cursor.close()
conn.close()

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class Main {
    public static void main(String[] args) {
        Connection conn = null;
        PreparedStatement stmt = null;

        try {
            // 连接数据库
            conn = DriverManager.getConnection("jdbc:mysql://localhost/database", "username", "password");

            // 定义SQL语句
            String sql = "UPDATE table SET column = ? WHERE condition = ?";

            // 创建PreparedStatement对象
            stmt = conn.prepareStatement(sql);

            // 设置变量值
            stmt.setString(1, value1);
            stmt.setString(2, value2);

            // 执行查询
            stmt.executeUpdate();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            // 关闭连接和语句对象
            try {
                if (stmt != null) {
                    stmt.close();
                }
                if (conn != null) {
                    conn.close();
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}