INSERT INTO failed_logins_ip_address (ip_address, attempts_count, attempt_datetime) VALUES ('xxx', 1, CURRENT_TIMESTAMP) ON DUPLICATE KEY UPDATE attempts_count = attempts_count + 1, attempt_datetime = CURRENT_TIMESTAMP 'ip_addess' 列是唯一的,MSSQL 和 MySQL 的表结构相同。 是否有可以在两种...
从这链接看,https://stackoverflow.com/questions/45652775/thread-safety-of-insert-on-duplicate-key-update,insert into on duplicate update并不是安全的,这个语句并非一个原子操作 Theinsert ... on duplicate key update...statement may fail only if the delete statement acquires the exclusive lock on the...
INSERT INTO Student(Id, ClassId, NAME) SELECT18,4,'小s'ON DUPLICATE KEY UPDATE ClassId =4, NAME ='小s'; 注1:update 多个字段时,必须要用英文逗号隔开,用and隔开的会更新失败且MySQL不会有语法错误提示 mssql 不需要在建表时指定创建唯一索引,插入或更新时,再根据指定的几个字段判断是否是同一条数据...
INSERT Class (Id, Name) VALUES (3, '1年4班'); INSERT Class (Id, Name) VALUES (4, '1年2班'); INSERT Student (Id, ClassId, Name) VALUES (1, 3, '小a'); INSERT Student (Id, ClassId, Name) VALUES (2, 1, '小b'); INSERT Student (Id, ClassId, Name) VALUES (3, 2, '小...
on('done', result => { // Always emitted as the last one console.log(result.rowsAffected) // Returns number of affected rows in case of INSERT, UPDATE or DELETE statement. ps.unprepare(err => { // ... error checks }) }) }) TIP: To learn more about how number of affected ...
($encodedproductenarray).'", "'.$conn->real_escape_string(subtractbtw($subtotaalcheckoutafr)).'", "'.$conn->real_escape_string($_SESSION['user']['id']).'")');$conn->query('UPDATE orders SET order_id = CONCAT(account_id, ".", id)WHERE id = LAST_INSERT_ID()');$conn->...
Google了一下，发现stackoverflow（ https://stackoverflow.com/questions/26133977/laravel-bulk-update ...
Violation of PRIMARY KEY constraint 'PK_test'. Cannot insert duplicate key in object 'dbo.test'. The duplicate key value is (12610). (Source: MSSQLServer, Error number: 2627) ? Thanks, Ram RAM There can be two reasons 1. The insert script used is having multiple instances of the recor...
下面介绍mysql的replace into语法和mysql数据库on duplicate key update实现方式。 一、mysql的replace into语法 1、语法 Mysql replace与replace into都是经常会用到的功能;replace其实是做了一次update操作,而不是先delete再insert;而replace into其实与insert into很像,但对于replace into,假如表中的一个旧记录与一个...
In merge replication, this error can also occur during an insert into the system table MSmerge_contents; the error raised is similar to: Cannot insert duplicate key row in object 'MSmerge_contents' with unique index 'ucl1SycContents.' User Action The action required depends on the reason the...