How to pass an array to SQL SERVER 2008 stored procedure and insert all the values of array into a table

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How to pass an array to SQL SERVER 2008 stored procedure and insert all the values of a array into a database table.

For Example: From ASP.NET C#, I would pass a parameter having multiple values separated by comma

as below

string category = "Cat1, Cat2, Cat3, Cat4";

I would like to insert all the values of above string in a table called Categories.

How could I achieve this using SQL SERVER 2008.

Posted 3-Aug-13 5:06am

sam7one

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[no name] 3-Aug-13 11:08am

You start by doing some research http://www.google.com/search?q=How+to+pass+an+array+to+SQL+SERVER+2008+stored+procedure

sam7one 4-Aug-13 2:45am

hmmm... thanks for answer else I would have never known about this option...GREAT HELP!

Zoltán Zörgő 4-Aug-13 6:10am

Anyway, google search is the option to start with. And it would have helped you - if you have had done it right.

2 solutions

Solution 2

You have several possibilities.
Passing the values as a table valued parameter is a good option. There are other though, see my answer here: How to pass collection values to sql server 2008 Stored Procedures ?[^]
Besides what I have mentioned there, you can use a function like this[^] to split the string on t-sql side and have it as table.

But in your case, the simplest approach would be split it in c# and simply issue the insert statement multiple times. Don't complicate things!

Posted 4-Aug-13 0:19am

Zoltán Zörgő

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Kuthuparakkal · Accepted Answer · 2013-08-03T21:43:00

Try this:

1. Create a Type in SQL Server
as:

SQL

CREATE TYPE dbo.MyDataTable -- you can be more speciifc here
AS TABLE
(
  Category NVARCHAR(200)
);
GO

2. Create a Stored Proc(on SQL Server) consume the above TYPE created and insert into Categories(assuming your table name is "Categories"

SQL

CREATE PROCEDURE dbo.InsertCategories
  @dt AS dbo.MyDataTable READONLY
AS
BEGIN
  SET NOCOUNT ON;

  INSERT dbo.Categories(Category) 
  SELECT Category 
  FROM @dt 
  WHERE Category NOT IN (SELECT Category FROM dbo.Categories);
END

Now the c# part:

C#

string category = "Cat1, Cat2, Cat3, Cat4";
string[] categories = category.Split(',');

DataTable dt_Categories = new DataTable();
dt_Categories.Columns.Add("Category", typeof(String));
DataRow workRow;
foreach(string cat in categories)
{
  workRow = dt_Categories.NewRow();
  workRow["Category"] = cat.Trim();
  dt_Categories.Rows.Add(workRow);
}
using (connectionObject)//assuming you have a connection here
{
    SqlCommand cmd = new SqlCommand("dbo.InsertCategories", connectionObject);
    cmd.CommandType = CommandType.StoredProcedure;
    SqlParameter tvparam = cmd.Parameters.AddWithValue("@dt", dt_Categories);
    tvparam.SqlDbType = SqlDbType.Structured;
    cmd.ExecuteNonQuery();
}