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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / check if at least one ...
Microsoft Dynamics AX (Archived)

check if at least one record exists

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Posted on by Community Member

Hi I a problem and try to create a statement as simple and quick as possible to solve it.

There are 4 Tables (A, B, C, D). C and D are header-line related tables, means C has the headers for D in it.

A has a relation to B and C, B has relation D (and for sure to A)

Now I want to check if there is at least one record in B where relations in tables A and C do not match

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  • Community Member Profile Picture
    Community Member on at

    Basically you are right but currently I do have a knot in my brain

  • Community Member Profile Picture
    Community Member on at

    maybe you can give a short advice? currently a have no clue how to mix those 4 table

  • Community Member Profile Picture
    Community Member on at

    ok. there is big data in the tables so doing the "while select" is not a good idea in that case.

    And I am not sure if your Idea realy works (cannot follow it anyway).

    But thanks a lot

  • Suggested answer
    Community Member Profile Picture
    Community Member on at

    Hi,

    Create two methods in tables:  A and C.

    static boolean exist(SalesId  salesId)

    {

       if (!salesId)

       {

           return false;

       }

       return (select firstonly RecId from salesTable

                   index hint SalesIdx

                   where salesTable.SalesId == salesId).RecId != 0;

    }

    Use your Field ID (Relation between the tables)

    In the method ValidateWrite

    Create a new condition:

    If(Table.Exist(FieldID))

    return Ret =  CheckFailed("The record is in the table A");

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