Advertisements
Home > SQL > C# – Bulk Update Records – Pass Data Table to SQL Stored Procedure

C# – Bulk Update Records – Pass Data Table to SQL Stored Procedure

I was building a console application to transact with large set of data in a SQL table and got a requirement to bulk update records.

Below are the options I got.

Option 1:

  • Loop through the records in Console and make SQL update call for each record.
  • This is a tedious and non-scalable for huge volumes data, as we need to make one SQL server transaction for each record from client (i.e, Console).

Option 2:

  • Populate the records to update as rows in a ‘Data Table’ and pass it to a Stored Procedure, and have the Update statement in Stored Procedure.
  • This is optimal as the heavy  SQL updates are off loaded from Console to SQL server.

Lets see how to implement options 2.

To make the Stored Procedure accept Data Table, we need to define “Table-Valued Parameter Types” in SQL first.

What is a ‘Table-Valued Parameter Type”:

  • Table-valued parameters are based on strongly-typed table structures that are defined by using SQL CREATE TYPE statements.
  • You need create a “Table-Valued Type” (i.e.,StudentTableType from below scenario) with the structure similar to your Table (i.e., Student table from below scenario).

Steps to implement Option 2:

To simplify the explanation, I am taking a ‘Student’ table with 3 columns.

  • Create ‘Student’ Table

Data Table 1

  • Create a ‘User-Defined Table Type’ (i.e., ‘StudentTableType‘) with ‘Student’ columns.
    • Note: You don’t need to include all columns. Add columns only you need to update.

Data Table 2

  • Create a Stored Procedure with StudentTableType as Parameter

Data Table 3

  • In the Console, populate a ‘Data Table’ with ‘Student’ records as ‘Data Row’

tableStudents = new DataTable(“Student”);
tableStudents.Columns.Add(“StudentID”, typeof(string));
tableStudents.Columns.Add(“StudentName”, typeof(string));
tableStudents.Columns.Add(“City”, typeof(string));

// Add ‘Student’ data as Rows to the Data Table
DataRow rowStudent = tableStudents.NewRow();
rowStudent[“StudentID”] = “RJ001”
rowStudent[“StudentName”] = “Rajeev”;
rowStudent[“City”] = “Hyd”;

//Add the Data Row to Table

tableStudents.Rows.Add(rowStudent);

  • Execute the Stored Procedure from Console by Passing ‘DataTable’ (i.e.,tableStudents) as Parameter

using (SqlConnection connection = ConnectionManager.SQLConnection)
{
SqlCommand cmdUpdateStudents = new SqlCommand(“BulkUpdateStudents”, connection)
{
CommandType = CommandType.StoredProcedure
};

SqlParameter tvpParam = cmdUpdateStudents.Parameters.AddWithValue(“@tvpStudents”, tableStudents);
tvpParam.SqlDbType = SqlDbType.Structured;

cmdUpdateStudents.ExecuteNonQuery();
}

 

 

 

Advertisements
  1. March 30, 2018 at 11:38 AM

    Thats pretty cool Rajeev. Is this stored procedure out of the box or you have some something that sort?

    Another doubt is do you have any book or url where we can get more information about back end of dynamics crm, like the design other objects involved and so on. Thanks in advance.

  1. March 31, 2018 at 9:09 AM

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: