DataTable批量插入数据库

最近在将excel中的文件导入到数据库中，用程序进行编写，由于数据量较大所以速度很慢，后来采用了SqlBulkCopy类，解决了速度的问题，我就insert语句,sqldataadapter.update(dataset,tablename);sqlbulkcopy.WriteToServer(datatable);三个方法的性能进行比较：

1、生成测试的datatable表，表结构如下：

UniqueID(主键，自动增长) | CompanyName | CompanyCode | Address | Owner | Memo

共6个字段。

SqlConnection sqlconnection = new SqlConnection(connectionString); SqlDataAdapter sqldataadapter = new SqlDataAdapter("select * from Table_1 where 1=2", sqlconnection); DataSet dataset = new DataSet(); sqldataadapter.Fill(dataset, "Table_1"); DataTable datatable = dataset.Tables[0]; //生成20000条记录

for (int i = 0; i < 20000; i++) { DataRow datarow = datatable.NewRow(); datarow["CompanyName"] = "companyname"+string.Format("{0:0000}",i); datarow["CompanyCode"] = "companycode" + string.Format("{0:0000}", i); datarow["Address"] = "address" + string.Format("{0:0000}", i); datarow["Owner"] = "owner" + string.Format("{0:0000}", i); datarow["Memo"] = "memo" + string.Format("{0:0000}", i);

datatable.Rows.Add(datarow); }

2、使用sqlcommand.executenonquery()方法插入

foreach (DataRow datarow in datatable.Rows) { string sql = "INSERT INTO [Table_1]

([CompanyName],[CompanyCode],[Address],[Owner],[Memo])" + "VALUES('" + datarow["CompanyName"].ToString() + "'" + ",'" + datarow["CompanyCode"].ToString() + "'" + ",'" + datarow["Address"].ToString() + "'" + ",'" + datarow["Owner"].ToString() + "'" + ",'" + datarow["Memo"].ToString() + "')"; using (SqlConnection sqlconn = new SqlConnection(connectionString)) { sqlconn.Open();

SqlCommand sqlcommand = new SqlCommand(sql, sqlconn); sqlcommand.ExecuteNonQuery(); sqlconn.Close(); } }

插入20000条记录时间:00:00:29.7336000

3、使用sqldataadapter.update(dataset,tablename);

SqlCommand insertcommand = new SqlCommand("INSERT INTO [Table_1]([CompanyName],[CompanyCode],[Address],[Owner],[Memo])" + "VALUES(@CompanyName, @CompanyCode,@Address,@Owner,@Memo)",new SqlConnection(connectionString)); insertcommand.Parameters.Add("@CompanyName", SqlDbType.NChar, 50, "CompanyName"); insertcommand.Parameters.Add("@CompanyCode", SqlDbType.NChar, 25, "CompanyCode"); insertcommand.Parameters.Add("@Address", SqlDbType.NChar, 255, "Address"); insertcommand.Parameters.Add("@Owner", SqlDbType.NChar, 25, "Owner"); insertcommand.Parameters.Add("@Memo", SqlDbType.NChar, 255, "Memo"); sqldataadapter.InsertCommand = insertcommand;

sqldataadapter.Update(dataset, "Table_1");

插入20000条记录时间:00:00:22.8938000

4、使用sqlbulkcopy.writetoserver(datatable)(日白得很说：这种方法只有SQL-Server和Oracle 11G以后的版本才可以使用...现在我用的是10G...残念...)

SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction); sqlbulkcopy.DestinationTableName = "Table_1";//数据库中的表名

sqlbulkcopy.WriteToServer(dataset.Tables[0]);

插入20000条记录时间:00:00:00.3276000

所以说速度是sqlbulkcopy最快，sqldataadapter.update()次之，sqlcommand.ExecuteNonQuery()最慢。