Question

Q:

I have the following case and i need the best performance answer:

i will use advanced control like gridview or schedule , and the data that is supposed to be bound to this control is : data from set of tables in my database.not a single table.

what is the best form for this data?

what i thought about at first is:

stored procedure ,contains my logic (and i wanna to ask here about what is the best performance also)use temporary table or joins or … etc.

what are the possible solutions and more performance rather than stored procedure( as this is a web application many users will use it).
i will be grateful if there is an example to clarify the idea.
thanks in advance.

Answer 1

The most common way would be to join the tables in an sql stored procedure, performance is not typically an issue unless you are joining many many tables or using a number of nested select statements.

However, if you really need an alternative, you could load data from each table individually (possibly into representative objects i.e. a user object for each row of data from the user table) and then create a data structure to house a combination of the data (i.e. if you have user objects and schedule objects, you could create a UserSchedule object) then you could bind your control to a list of these secondary objects.

EDIT

Since you seem to really not want to use stored procs. How about a compromise?
You could use LINQ to entities to join multiple sets of data within C# after getting them all from the DB separately.

Here is an example:

ObjectSet<SalesOrderHeader> orders = context.SalesOrderHeaders;
ObjectSet<SalesOrderDetail> details = context.SalesOrderDetails;

var query =
    from order in orders
    join detail in details
    on order.SalesOrderID
    equals detail.SalesOrderID into orderGroup
    select new
    {
        CustomerID = order.SalesOrderID,
        OrderCount = orderGroup.Count()
    };

And here is a link to more info.