WebApr 12, 2024 · Duplicate entry '4' for key 'PRIMARY' 0.016 sec 因为表中的主键 task_id 列已经有一个值为 4 的行了,所以该语句违反了 PRIMARY KEY 约束。 但是,如果在 INSERT 语句中指定ON DUPLICATE KEY UPDATE选项,MySQL将插入新行或使用新值更新原行记录。 例如,以下语句使用新的 task_id 和 subject 来更新 task_id 为 4 的行。 WebFeb 14, 2013 · Jika anda mendapati pesan error mysql seperti ini “Duplicate entry for key ‘PRIMARY’ ” sewaktu melakukan import file .sql atau menambah field baru artinya bahwa data yang akan anda entrikan sudah ada sebelumnya. Solusinya adalah menghapus data yang ada sebelumnya kemudian baru melakukan import ulang data baru. Semoga …
Duplicate entry for key
WebMar 13, 2024 · That seems like a pragmatic solution to me 👍 We've established that it only happens occasionally, it's hard to reproduce, we're not running the query multiple times and since the example queries are returning a simple list of primary keys then ignoring a duplicate insert value won't affect the intended outcome. WebCaused by: java.sql.SQLIntegrityConstraintViolationException: Duplicate entry ‘张三‘ for key ‘ul_name‘ csir net 2022 admit card website
Caused by: java.sql.SQLIntegrityConstraintViolationException: …
WebLeaf Error: Duplicate entry 'VALUE' for key 'PRIMARY' {question} {answer} When trying to insert a record into a table where the auto_increment has become unsynchronized … WebNov 29, 2024 · How to fix: MySQL Duplicate entry for key PRIMARY on…. Create a backup of the database by issuing: mysqldump -uUSER -pPASSWORD DBNAME > … Webmysql中出现duplicate entry 'xxx' for key 'primary'解决方案-爱代码爱编程 2024-06-28 分类: jsp 数据库 mysql eclipse 首先我们用MySQL自带的可视化管理工具MySQL WorkBench打开数据库及表格,出现此问题的主要原因是主键已经有了名为“XXX”的那项,实际上我写的代码并没有重复也会弹出此报错,下面我们看一下我自己 ... csir net 2022 29 january application