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SetLoadFields in Business Central

How to Use SetLoadFields in Business Central?


SetLoadFields is an amazing feature of business central wave 2 2020. Conventionally, we are used to load all fields together whenever we are going to retrieve records from table. At that moment, I suppose it uses Select * From Table query in the backend. So, it will take little bit more time to fetch the data. We can reduce this time with the help of SetLoadFields when we use this function. I suppose it will use Select Field From Table query to fetch the data. This will impact a lot as far as performance is concerned. Also, we can use SetLoadFields with Setrange and Setfilter to get our desire records. Here, I have used Setfilter along with SetLoadFields.


pageextension 50100 CustomerListExt extends "Customer List"
{
    trigger OnOpenPage();
    var
        Item: Record Item;
        total: Decimal;
    begin
        Item.Reset();
        Item.SetFilter("No.", '%1|%2''1953-W''1960-S');
        Item.SetLoadFields(Item."Unit Cost");
        if Item.FindSet() then
            repeat
                total += item."Unit Cost";
            until Item.Next() 0;
        Message('%1', total);
    end;
}

SetLoadFields

There are other functions that can be used for Partial records capabilities but I guess SetLoadFields is the most important for developer like us.

Comments

  1. Try running your code with/without the use of SetLoadFields. Then you can see the SQL statements in the database statistics part of the debugger

    ReplyDelete

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