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Error loading temp table data within a sql transaction

See original GitHub issue

Hi again,

Sorry, I wish that I didn’t have to create these issues and that everything worked fine.

What I am trying to do? Within a sql transaction:

  • Get rows to process <- this has to happen within the transaction
  • Process rows and gather data in memory
  • Save data in temp tables
  • Call stored procedure to merge the data from the temp tables into the real tables

The problem that I encountered is when I save the data to the temp tables:

System.InvalidOperationException: ExecuteNonQuery requires the command to have a transaction when the connection assigned to the command is in a pending local transaction.  The Transaction property of the command has not been initialized.
at Microsoft.Data.SqlClient.SqlCommand.ValidateCommand(Boolean isAsync, String method)
 at Microsoft.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, Boolean sendToPipe, Int32 timeout, Boolean& usedCache, Boolean asyncWrite, Boolean inRetry, String methodName)
 at Microsoft.Data.SqlClient.SqlCommand.ExecuteNonQuery()
 at Facil.Runtime.CSharp.GeneratedCodeUtils.LoadTempTables(SqlConnection conn, IEnumerable`1 tempTableData) in C:\projects\facil\src\Facil.Runtime.CSharp\GeneratedCodeUtils.cs:line 48
 at Facil.Runtime.CSharp.GeneratedCodeUtils.ExecuteQueryEager[T](SqlConnection existingConn, String connStr, Action`1 configureNewConn, Action`1 configureCmd, Action`1 initOrdinals, Func`2 getItem, IEnumerable`1 tempTableData) in C:\projects\fac
il\src\Facil.Runtime.CSharp\GeneratedCodeUtils.cs:line 150

Basically this code ends up being called and it blows up when it tries to execute cmd.ExecuteNonQuery()

        private static void LoadTempTables(SqlConnection conn, IEnumerable<TempTableData> tempTableData)
            foreach (var data in tempTableData)
                using var cmd = conn.CreateCommand();
                // Note: If there is ever a need for letting users configure the command,
                // do not use the configureCmd parameter passed to methods on this class,
                // which also sets any parameters.
                cmd.CommandText = data.Definition;

                using var bulkCopy = new SqlBulkCopy(conn) { DestinationTableName = data.DestinationTableName };
                var reader = new TempTableLoader(data.NumFields, data.Data);

Any idea on how to workaround this? I cannot move the processing of the data and the saving of the processed data into the temp tables outside the transaction.


Issue Analytics

  • State:closed
  • Created 2 years ago
  • Comments:13 (6 by maintainers)

github_iconTop GitHub Comments

cmeerencommented, Jan 12, 2022

v2.3.0 should be out shortly with support for temp tables in procedures, just like in scripts.

cmeerencommented, Jan 5, 2022

This should now work. After 2.2.0 is published, use the new WithConnection(conn, tran) overload to pass the transaction instead of using ConfigureCommand. (Yes, this means you also got #27. It’s Christmas all over again! 🎅)

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