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Editorial Team
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Asked: 2026-05-25T20:04:50+00:00

I have a query which I want to have a default value from a

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I have a query which I want to have a default value from a table (you could call it a vlookup in excel). My query looks like this:

select stamdata_sd.id_sd AS id_sd, stamdata_sd.Type_sd
AS Type_sd from stamdata_sd;

I want the Type_sd field in the query to be a default value from a table called type_ty. Something like this:

select stamdata_sd.id_sd AS id_sd, stamdata_sd.Type_sd default(selected
from a table called type_ty, where the pk id_ty is the higest)
AS Type_sd from stamdata_sd;

So, when i make a new record in the query, the field Type_sd is auto filled with the newest instance in the type_ty table.

How am I able to write such a query?

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1 Answer

  1. Editorial Team

    I think this is a really bad design. Your table will always have incorrect data in it. And it will always have some nulls in a column that should probably be NOT NULL.

    If I were you, I’d try writing a BEFORE INSERT and BEFORE UPDATE triggers to make sure the right data always goes into the base table. You can SELECT the current value from your type_ty table.

    The use of a BEFORE INSERT trigger is obvious. But you also want to make sure good data goes into that column should a user try to set it to NULL or to an empty string. So you need a BEFORE UPDATE trigger, too.

    There are also good ways to handle this in client code, after first fixing the data and constraints in the base table. Client code can require a value once a session, which it can use as the current value, or it can remember the last value used and insert it into the user interface (where it might be overtyped with a different value). You could store the current value in a cookie. Lots of ways.

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