how the BULK INSERT statement work?

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1.00/5 (3 votes)

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SQL-Server-2005

SQL-Server

Hi! how the BULK INSERT statement works explain with code.

Posted 12-Apr-12 20:44pm

santosh_k

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OriginalGriff 13-Apr-12 3:18am

Reason for my vote of one: too lazy to google

santosh_k 16-Apr-12 21:15pm

http://insqlserver.com/comment/4

santosh_k 16-Apr-12 21:36pm

http://wikiprogrammer.wordpress.com/2012/02/24/load-excel-file-dynamically-into-database-using-sqlbulkcopy-and-getoledbschematable-in-c/

santosh_k 16-Apr-12 23:52pm

http://stackoverflow.com/questions/9415560/sql-bulk-copy-from-data-table-will-not-upload

2 solutions

Solution 1

Google is your friend: Be nice and visit him often. He can answer questions a lot more quickly than posting them here...

A very quick search using your subject as the search term gave over 2 1/2 million hits.
The top hit is MSDN: http://msdn.microsoft.com/en-us/library/ms188365.aspx[^]

In future, please try to do at least basic research yourself, and not waste your time or ours.

Posted 12-Apr-12 21:17pm

OriginalGriff

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santosh_k · Accepted Answer · 2012-04-16T15:42:00

From: http://www.eggheadcafe.com/community/sql-server/13/10351461/how-to-import-excel-data-to-a-sql-table.aspx[^]

2. Now design a tStudent table in SQL server

SQL

Create Table 
( 
   StudentName varchar(64), 
   RollNo varchar(16), 
   Course varchar(32), 
)

your ms excel sheet and SQL table is ready, now its time to write c# code to import the excel sheet intotStudent table

3.
Add these two name space in your class file

C#

using System.Data.OleDb;
using System.Data.SqlClient;

Use following code

C#

public void importDataFromExcel(string excelFilePath)
{ 
   //Declare Variables - Edit these based on your particular situation
   string sSQLTable = "tDataMigrationTable";
   
   // make sure your sheet name is correct, here sheet name is Sheet1, so you can change your sheet name if have different
   string myExcelDataQuery = "Select StudentName,RollNo,Course from [Sheet1$]"; 

   try
   {
      //Create our connection strings
      string sExcelConnectionString = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelFilePath + ";Extended Properties=" + "\"Excel 8.0;HDR=YES;\"";
      string sSqlConnectionString = "SERVER=MyDatabaseServerName;USER ID=DBUserId;PASSWORD=DBUserPassword;DATABASE=DatabaseName;CONNECTION RESET=FALSE"; 

      //Execute a query to erase any previous data from our destination table
      string sClearSQL = "DELETE FROM " + sSQLTable;
      SqlConnection SqlConn = new SqlConnection(sSqlConnectionString);
      SqlCommand SqlCmd = new SqlCommand(sClearSQL, SqlConn);
      SqlConn.Open();
      SqlCmd.ExecuteNonQuery();
      SqlConn.Close(); 

      //Series of commands to bulk copy data from the excel file into our SQL table
      OleDbConnection OleDbConn = new OleDbConnection(sExcelConnectionString);
      OleDbCommand OleDbCmd = new OleDbCommand(myExcelDataQuery, OleDbConn); 
      OleDbConn.Open(); 
      OleDbDataReader dr = OleDbCmd.ExecuteReader();
      SqlBulkCopy bulkCopy = new SqlBulkCopy(sSqlConnectionString); 
      bulkCopy.DestinationTableName = sSQLTable; 
      while (dr.Read())
      {
         bulkCopy.WriteToServer(dr);
      } 
      OleDbConn.Close();
   }
   catch (Exception ex)
   {
      //handle exception
   } 
}