How to Union two tables and display them in the same List

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Posted on by Taiwan

Hi,

I want to be Union two tables together in AL code for Business Central for the cloud.

Similar to the way you would in SQL with a "UNION ALL" statement.

As the cloud version of business central does not let you get directly to the tables and create views, I need to do this in AL code.

I know I can create a new table and load the data from the 2 table into that table and then use that table on the page extension, but as the table grow, this would get slower and slower.

The 2 table I want to join together first is the following.

"Sales Invoice line"; //table 113

"Sales Cr.Memo line"; //table 115

-----------------------------------------------------------------------------

I know Query can join two tables show the some row,
But, I want two table data can show different row and the some List.

The schematic is as follows :

copy by : community.dynamics.com/.../1169640

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Taiwan 20 on at

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RE: How to Union two tables and display them in the same List

Thank Your Answer

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YUN ZHU 90,632 Super User 2025 Season 2 on at

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RE: How to Union two tables and display them in the same List

1. Create a new table (Set the SourceTableTemporary true and set a new key, such as Entry No.)

2. Create a new list page to display the fields in the new table

3. Insert data in the trigger OnOpenpage()

Here is a similar example, hope it will help.

https://yzhums.com/4869/

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JAngle 115 on at

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RE: How to Union two tables and display them in the same List

My proposed idea which I’ve used for a different circumstance uses a custom table. I use the source as temporary as I only want to show the data per time the page is open. Of course that’s ok if you have a small amount of data. You will most likely want a routine that populates the new table each time and invoice or credit memo is created so you have the table filled and then a regular page could work.

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Suresh Kulla 49,414 Super User 2025 Season 2 on at

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RE: How to Union two tables and display them in the same List

The only other way is to create a brand new table, populate that table with existing values, and add the code in the Insert Trigger of those tables to insert data into your new table. That way you don't need to use SourceTableTemporary

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Taiwan 20 on at

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RE: How to Union two tables and display them in the same List

Hi~Josh,

Thank you so much for the solution,

I have successfully tried this solution to display two Tables Data in the same List, and the data can be sorted or filtered.

But I have a big trouble,

Because this solution is to use SourceTableTemporary,

Therefore, it does not actually add data to the Table,

So I cannot use "GetRecord Method" to get data.

Do you have any ideas or methods to get the Datas on the List?

Thank you again for your assistance

Best regards,

Wilkai

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JAngle 115 on at

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RE: How to Union two tables and display them in the same List

Not as elegant as a query but you could devise a table which can house both sets of data and use it as a temporary table. Then have a routine which fills the table with the values from the two tables and displays that in a list page. To the user it is a one page experience.

Not done this exact scenario but some of the things to use if you went for this approach can be seen below with some crude code snippets

Page action to open the page - the highlighted part calls a function in the page to populate it

trigger OnAction()

                var

                    QueryPage: Page "Query Page";

                begin



                    QueryPage.SetPageData();

                    QueryPage.Run();

                end;

The function on the page is like this for my scenario but you could get it to run multiple queries or just copy data from the tables. I'll add the page properties as well so you can see what I did there

procedure SetPageData()

    var

        NextRowNo: Integer;

        JrnlQuery: Query "A Query";

    begin

        if (GenJnlTemplate = '') or (GenJnlBatch = '') then

            error(Error001);

        JrnlQuery.Open();

        while JrnlQuery.Read() do begin

            NextRowNo := NextRowNo + 1;

            "Entry No." := NextRowNo;

            "Field A" := JrnlQuery.SomeField;

            Insert();

        end;

    end;

PageType = List;

    ApplicationArea = All;

    UsageCategory = Administration;

    SourceTable = "Custom Table";

    SourceTableTemporary = true;

    Editable = false;

    DeleteAllowed = false;

    InsertAllowed = false;

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