Importing and Exporting Data with SQL Server BCP (Bulk Copy Program)


The SQL Server Bulk Copy Program (BCP) is a powerful command-line tool that allows you to efficiently import data into and export data from SQL Server databases. In this guide, we'll explore the basics of using BCP for data import and export, along with sample code examples.


What is SQL Server BCP?

SQL Server BCP, or Bulk Copy Program, is a command-line utility that provides fast and efficient data transfer between SQL Server databases and external data files. It is particularly useful for handling large volumes of data.


Using BCP for Data Export

To export data from a SQL Server table to an external file, you can use BCP with a command like this:


bcp YourDatabase.dbo.YourTable out C:\ExportedData.csv -c -t, -T
    

  • YourDatabase.dbo.YourTable
    : The source table to export data from.
  • C:\ExportedData.csv
    : The target file for data export.
  • -c
    : Specifies character data type for export.
  • -t,
    : Specifies the field terminator (in this case, a comma).
  • -T
    : Uses trusted connection (Windows Authentication).

Using BCP for Data Import

To import data from an external file into a SQL Server table, you can use BCP with a command like this:


bcp YourDatabase.dbo.YourTable in C:\ImportData.csv -c -t, -T
    

  • YourDatabase.dbo.YourTable
    : The target table to import data into.
  • C:\ImportData.csv
    : The source file for data import.
  • -c
    : Specifies character data type for import.
  • -t,
    : Specifies the field terminator (in this case, a comma).
  • -T
    : Uses trusted connection (Windows Authentication).

Other BCP Options

BCP provides numerous options for controlling data format, batch size, error handling, and more. You can refer to the official SQL Server documentation for a comprehensive list of BCP options.


What's Next?

You've learned the basics of using SQL Server BCP for data import and export. To become proficient, you can explore advanced BCP options, automation using scripts, and best practices for handling various data formats.


BCP is a valuable tool for efficiently moving data in and out of SQL Server databases.