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//·½°¸Ò»£º ͨ¹ýOleDB·½Ê½»ñÈ¡ExcelÎļþµÄÊý¾Ý£¬È»ºóͨ¹ýDataSetÖÐתµ½SQL Server
openFileDialog = new OpenFileDialog();
openFileDialog.Filter = "Excel files(*.xls)|*.xls";
if(openFileDialog.ShowDialog()==DialogResult.OK)
{
    FileInfo fileInfo = new FileInfo(openFileDialog.FileName);
    string filePath = fileInfo.FullName;
    string connExcel = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties=Excel 8.0";
   
    try
    {
        OleDbConnection oleDbConnection = new OleDbConnection(connExcel);
        oleDbConnection.Open();
       
        //»ñÈ¡excel±í
        DataTable dataTable = oleDbConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);
        //»ñÈ¡sheetÃû£¬ÆäÖÐ[0][1]...[N]: °´Ãû³ÆÅÅÁÐµÄ±íµ¥ÔªËØ
        string tableName = dataTable.Rows[0][2].ToString().Trim();
        tableName = "[" + tableName.Replace("'","") + "]";
        //ÀûÓÃSQLÓï¾ä´ÓExcelÎļþÀï»ñÈ¡Êý¾Ý
        //string query = "SELECT classDate,classPlace,classTeacher,classTitle,classID from " + tableName;
        string query = "SELECT ÈÕÆÚ,¿ª¿Î³ÇÊÐ,½²Ê¦,¿Î³ÌÃû³Æ,³ÖÐøʱ¼ä from " + tableName;
        dataSet = new DataSet();
        //OleDbCommand oleCommand = new OleDbCommand(query, oleDbConnection);
        //OleDbDataAdapter oleAdapter = new OleDbDataAdapter(oleCommand);
       


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ABORT --  Í˳öµ±Ç°ÊÂÎñ
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use master
select loginame,count(0) from sysprocesses
group by loginame
order by count(0) desc
select nt_username,count(0) from sysprocesses
group by nt_username
order by count(0) desc
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create or replace function CONVERT_ID_15 (/*ת»»Éí·ÝÖ¤ºÅΪ15λ*/
  p_id2 in varchar2
) return varchar2
is
  p_id varchar2(20);
  id varchar2(15);
begin
  p_id:=ltrim(p_id2);
  p_id ......

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--SQLÓï¾ä¸´Ï° --Ò»,²åÈëinsertÓï¾ä --1,ins ......

SQL ServerÖеÄCTE

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