.NET批量大数据插入性能分析及比较(6.使用表值参数)

表值参数(Table-valued Parameter)是SQL Server 2008增加的新特性，可以将DataTable做为参数传递给存储过程。

数据库执行脚本如下

CREATE TYPE TestType AS TABLE
(
Id int NOT NULL
,Name nvarchar(20) NOT NULL
)

CREATE PROC InsertData
@rows TestType READONLY
as
begin
set nocount on
insert into TestTable(Id, Name)
select Id, Name from @rows
end

代码如下：

#region 使用表值参数 public static bool ExecuteTableTypeInsert(DataTable dt, int batchSize) { int count = dt.Rows.Count; bool flag = false; SqlConnection cn = null; SqlCommand cmd = null; DataTable tempTable = Tools.MakeDataTable(); DataRow row = null; try { cn = new SqlConnection(connectionString); cmd = new SqlCommand(); cmd.Connection = cn; cmd.CommandType = CommandType.StoredProcedure; cmd.CommandText = "InsertData"; cn.Open(); for (int i = 0; i < count; i += batchSize) { for (int j = i; j < i + batchSize && j < count; j++) { row = tempTable.NewRow(); row["Id"] = dt.Rows[j]["Id"]; row["Name"] = dt.Rows[j]["Name"]; tempTable.Rows.Add(row); } SqlParameter param = cmd.Parameters.AddWithValue("@rows", tempTable); param.SqlDbType = SqlDbType.Structured; param.TypeName = "TestType"; cmd.ExecuteNonQuery(); tempTable.Clear(); cmd.Parameters.Clear(); } flag = true; } catch (Exception ex) { LogHelper.Error(ex.Message); return false; } finally { if (cn != null) { if (cn.State == ConnectionState.Open) { cn.Close(); } cn.Dispose(); } if (cmd != null) cmd.Dispose(); } return flag; } #endregion

结果如下：

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:10;Time:15312;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:20;Time:7806;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:50;Time:3767;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:100;Time:2217;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:200;Time:1743;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:400;Time:1575;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:500;Time:1566;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:600;Time:1374;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:700;Time:1286;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:800;Time:1463;

Use SqlServer TableType Insert;RecordCount:40000;BatchSize:1000;Time:1272;