SERVER A:public string connStr =“Data Source = PH-09-5336; Initial Catalog = InventoryDB; Integrated Security = True”;
SERVER B:public string connWIP =“Data Source = PWODU-COGNOSDB3; Initial Catalog = BI_SOURCE;
我有这种方法从excell文件中将记录插入InventoryDB.DBO.FG_FILLIN。
从BI_SOURCE.dbo.ODU_WIP_PI中选择记录,然后更新InventoryDB.DBO.FG_FILLIN上的空记录(项目编号),如果其序列号在BI_SOURCE.dbo.ODU_WIP_PI serialnumber上匹配。
问题:
我尝试更新了13000条记录,需要5分钟才能更新。 我需要更新只有itemnumber具有空记录的新插入记录InventoryDB.DBO.FG_FILLIN。
但在我的代码中,它会循环并再次更新InventoryDB.DBO.FG_FILLIN中的所有记录
我真的堆积在这个问题上。
-------------------------------------INSERT RECORDS----------------------------------------
using (SqlConnection conn = new SqlConnection(connStr))
{
using (SqlCommand cmd = new SqlCommand("Insert into dbo.FG_FILLIN Select * FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0','Excel 8.0;Database=" + filepath1 + ";HDR=YES','SELECT * FROM [" + Sheetname1 + "$]')", conn))
{
try
{
conn.Open();
cmd.ExecuteNonQuery();
txtsheet1.Text = string.Empty;
txtpath1.Text = string.Empty;
txtpath1.Focus();
MessageBox.Show("FILL IN Mass Upload Success!");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
txtsheet1.Text = string.Empty;
txtpath1.Text = string.Empty;
txtpath1.Focus();
}
finally
{
if (conn.State == ConnectionState.Open) cmd.Connection.Close();
conn.Close();
}
}
---------------------------------SELECT UPDATE -----------------------------------
public void Update()
{
using (SqlConnection conn = new SqlConnection(connWIP))
{
try
{
conn.Open();
using (SqlDataAdapter dAd = new SqlDataAdapter("select WIP_serialNumber, WIP_ItemID from BI_SOURCE.dbo.ODU_WIP_PI", conn))
{
DataTable data = new DataTable();
dAd.Fill(data);
using (SqlConnection conn2 = new SqlConnection(connStr))
{
conn2.Open();
try
{
foreach (DataRow recordFromServerA in data.Rows)
{
using (SqlCommand dCmd = new SqlCommand("update [dbo].[FG_FILLIN] SET ItemNumber=@ItemNumber where SerialNumber=@SerialNumber", conn2))
{
dCmd.Parameters.AddWithValue("@ItemNumber", recordFromServerA["WIP_ItemAlias"]);
dCmd.Parameters.AddWithValue("@SerialNumber", recordFromServerA["WIP_serialNumber"]);
dCmd.ExecuteNonQuery();
}
}
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
finally
{
if (conn2.State == ConnectionState.Open) conn2.Close();
}
}
}
MessageBox.Show("All Records Updated Successfully!");
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
finally
{
if (conn.State == ConnectionState.Open) conn.Close();
}
}
}
#endregion
答案 0 :(得分:0)
如果我已正确理解您的问题,您可以通过执行单个SQL语句来大大加快更新过程,而不是单独循环遍历每一行。
这个怎么样?将记录加载到表A(FG_FILLIN)后,创建一个SQL UPDATE语句,该语句使用表A中的连接到表B,其中表A中的ItemNumber字段为空。这样的事情应该这样做:
UPDATE [dbo].[FG_FILLIN]
SET ItemNumber = table2.WIP_ItemID
FROM [dbo].[FG_FILLIN] INNER JOIN BI_SOURCE.dbo.ODU_WIP_PI as table2
ON [dbo].[FG_FILLIN].SerialNumber = table2.WIP_SerialNumber
WHERE [dbo].[FG_FILLIN].ItemNumber IS NULL
答案 1 :(得分:0)
另一件事, 你也可以将你的东西包装成
using(var scope = new TransactionScope())
{
stuff
scope.Complete();
}
使其成为交易