以下是为您整理出来关于【sqltransaction】合集内容，如果觉得还不错，请帮忙转发推荐。
事务：///<summary>/// 删除考勤///</summary>///<param name="dto">Id</param>///<returns></returns>public ResultEntity<bool> DeleteAttend(DelAttendEditorDTO dto){//SqlConnection con = new SqlConnection(@"Data Source=.SQLEXPRESS;database=aaaa;uid=sa;pwd=jcx");//con.Open();using (var context = new HRModelsContainer()){var trans = context.Database.BeginTransaction();try{foreach (var Id in dto.Ids){//先删...
privatestaticvoid Execute(string connectionString){using (SqlConnection connection = new SqlConnection(connectionString)){connection.Open();SqlTransaction transaction;using (SqlCommand cmd = connection.CreateCommand()){//启动事务transaction = connection.BeginTransaction();cmd.Connection = connection;cmd.Transaction = transaction;try{cmd.CommandText = "sql语句！";cmd.ExecuteNonQuery();//完成提交 ...
有很多人在网上谈论它,但这似乎不起作用.这是我得到的例外：This SqlTransaction has completed; it is no longer usable.这是代码using (SqlConnection locationConnection = new SqlConnection(connectionString)){locationConnection.Open();SqlTransaction transaction = locationConnection.BeginTransaction();SqlCommand cmd = new SqlCommand("Select stuff from table AInsert stuff into table BDelete stuff from table...
1.生产环境出现以下报错 该错误发生在update操作中，该表并未建立索引，也就是只有InnoDB默认的主键索引，发生错误的程序是for循环中update。 什么情况下会出现Deadlock found when trying to get lock？ https://dev.mysql.com/doc/refman/5.6/en/innodb-deadlocks.html 出现死锁需要两个条件： 1）至少2个客户端（a,b）同时在执行事务 2)客户端a锁定了某一行，未提交事务，此时客户端b也需要update/delete这一行，此时客户端b就...
Recently, an application that my team was working on encountered problems with a MySQL deadlock situation and it took us some time to figure out the reasons behind it. This application that we deployed was running on a 2-node cluster and they both are connected to an AWS MySQL database. The MySQL db tables are mostly based on InnoDB which supports transaction (meaning all the usual commit and roll...
有时候程序处理的数据量比较小时，四平八稳，一切安然无恙，但数据量一大，原先潜伏的问题就暴露无遗了。原访问数据库的代码为： 1SqlConnection conn = new SqlConnection(strConn); 2conn.Open(); 3SqlTransaction trans = conn.BeginTransaction(); 4try 5{ 6 CEngine.ExecuteNonQuery(trans,CommandType.Text,sql); 7 trans.Commit(); 8} 9catch(SqlException ex)10{11 trans.Rollback();12 ErrorCode = ex.Number...
1.生产环境出现以下报错 该错误发生在update操作中，该表并未建立索引，也就是只有InnoDB默认的主键索引，发生错误的程序是for循环中update。 什么情况下会出现Deadlock found when trying to get lock？ https://dev.mysql.com/doc/refman/5.6/en/innodb-deadlocks.html 出现死锁需要两个条件： 1）至少2个客户端（a,b）同时在执行事务 2)客户端a锁定了某一行，未提交事务，此时客户端b也需要update/delete这一行，此时客户端b就...
static void Execute(string connectionString){using (SqlConnection connection = new SqlConnection(connectionString)){connection.Open();SqlTransaction transaction;using (SqlCommand cmd = connection.CreateCommand()){//启动事务transaction = connection.BeginTransaction();cmd.Connection = connection;cmd.Transaction = transaction;try{cmd.CommandText = "sql语句！";cmd.ExecuteNonQuery();//完成提交transacti...
在PHP中，mysqli 已经很好的封装了mysql事务的相关操作。如下示例： view plain copy to clipboard print ? $sql1 = "update User set ScoreCount = ScoreCount +10 where ID= '123456'"; $sql2 = "update ScoreDetail set FScore = 300 where ID= '123456'"; $sql3 = "insert into ScoreDetail ID,Score) values ('123456',60)"; $mysqli = new mysqli('localhost','root','','DB_Lib2Test'); $...
有时候程序处理的数据量比较小时，四平八稳，一切安然无恙，但数据量一大，原先潜伏的问题就暴露无遗了。原访问数据库的代码为： 1SqlConnection conn = new SqlConnection(strConn); 2conn.Open(); 3SqlTransaction trans = conn.BeginTransaction(); 4try 5{ 6 CEngine.ExecuteNonQuery(trans,CommandType.Text,sql); 7 trans.Commit(); 8} 9catch(SqlException ex)10{11 trans.Rollback();12 ErrorCode = ex.Number...