Question

I am doing a SQL Insert to populate my table. I have a unique generated ID in one table that I would like to use in another table for my join. Is this possible?

.NET MVC —

using (SqlConnection connect = new SqlConnection(connections))
{
    SqlCommand command = new SqlCommand("ContactInfo_Add", connect);
    command.Parameters.Add(new SqlParameter("name", name));
    command.Parameters.Add(new SqlParameter("address", address));
    command.Parameters.Add(new SqlParameter("Product", name));
    command.Parameters.Add(new SqlParameter("Quantity", address));
    command.Parameters.Add(new SqlParameter("DueDate", city));
    connect.Open();
    command.ExecuteNonQuery();
}

SQL SERVER —

ALTER PROCEDURE [dbo].[Contact_Add]
@name varchar(40),
@address varchar(60),
@Product varchar(40),
@Quantity varchar(5),
@DueDate datetime
AS 
BEGIN
     SET NOCOUNT ON;

     INSERT INTO DBO.PERSON
     (Name, Address) VALUES (@name, @address)
     INSERT INTO DBO.PRODUCT_DATA
     (PersonID, Product, Quantity, DueDate) VALUES (@Product, @Quantity, @DueDate)
END

The code inserts fine. Just how do I pull the Auto-generated PersonID to use in PRODUCT_DATA?

Answer 1

You can use SCOPE_IDENTITY to get the last inserted identity value:

DECLARE @PersonID INT

INSERT INTO dbo.Person (Name, Address)
VALUES (@Name, @Address)

SET @PersonID = SCOPE_IDENTITY()

INSERT INTO dbo.Product_Data (PersonID, Product, Quantity, DueDate)
VALUES (@PersonID, @Product, @Quantity, @DueDate)