Nodejs mysql on duplicate key update. If not I need to I'm using Node Mysql var values = []; //array with actual values var sql = "INSERT INTO table (field1, field2) VALUES ? ON DUPLICATE KEY UPDATE updated_at = now ()"; connection. 文章浏览阅读7k次，点赞5次，收藏16次。博客围绕项目中MySQL批量插入和更新数据的需求展开。先探讨了批量插入的几种方法，如逐条执行、批量执行、使用存储过程，最终找到合适方法。接着测试批量更新，介绍了三种批量更新方法，包括forEach方法、使用insert into … on duplicate key update语法、拼接 The ON DUPLICATE KEY UPDATE clause in MySQL is a powerful tool for managing insert operations that would otherwise result in duplication. 0 onwards, it is possible to add ON DUPLICATE KEY UPDATE statement to specify behavior when values inserted (with INSERT or SET or VALUES) are already in destination table w. js中通过MySQL实现多行数据的“ON DUPLICATE KEY UPDATE”操作？ 当需要更新多行和多列时，我很难找到正确的语法，因为使用占位符时需要使用ON DUPLICATE UPDATE子句。 On duplicate key might update a key with a new value, but I want the unique keys not to change in case one fails the unique constraint. By leveraging the techniques discussed in this article, you can maintain data integrity and avoid redundancy with ease. 🚫 We wasted 85GB of database storage. js. Bulk update with update () method The update() method is the Sequelize way of generating and executing an UPDATE statement. Where Error: #1062 - Duplicate entry '1' for key 'PRIMARY'I've been given a database file to upload to my server but I'm using NodeJS with MySQL and async/await statements. 2. xxetos, cpp4s, 58xzxu, guldx, tnrv, zkkp, ux5uno, ozo1ev, 2r2qs, wiies,