SQL中的自动增量列如何在数据表中分配

本文关键字：数据表分配 SQL | 更新日期: 2024-09-08 11:01:50

SqlBulkCopy sqlBulk = new SqlBulkCopy(conn, SqlBulkCopyOptions.KeepIdentity, t);
sqlBulk.DestinationTableName = DestTableName;
sqlBulk.BatchSize = 1000;
sqlBulk.WriteToServer(dt);                   
t.Commit();

如果我分配了标识列值，并且如果我不分配，则会发生错误，它会显示"主键中不允许空"列 - 该怎么办？

SQL中的自动增量列如何在数据表中分配

请阅读以下内容：

https://web.archive.org/web/20210927181836/http://www.4guysfromrolla.com/articles/102109-1.aspx

或

using (var bulkCopy = new SqlBulkCopy(ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString, SqlBulkCopyOptions.KeepNulls & SqlBulkCopyOptions.KeepIdentity))
                {
                    bulkCopy.BatchSize = (int)DetailLines;
                    bulkCopy.DestinationTableName = "dbo.myTable";
                    bulkCopy.ColumnMappings.Clear();
                    bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");
                    bulkCopy.ColumnMappings.Add("SourceColumnName", "DestinationColumnName");

                    bulkCopy.WriteToServer(datatable);
                }