topic Problem with synthetic keys in QlikView

Problem with synthetic keys

MH_Newbie — Sat, 16 Nov 2024 02:32:56 GMT

Hey!

I'm quite new to QlikView and trying to improve my data modeling skills.
My current problem is that synthetic keys are created where I don't want to have them and I don't have any solution at the moment.

Following pic will show you my structure:

My former key %Position_Artikel turned into a synthetic key by adding the new table 'Nebenlager'. I tried to associate it to 'Artikel' which didn't work. Both tables have similar fields called 'ArtikelNr' (Nebenlager) or 'ArtikelPart_Nr' (Artikel).

Is there any solution how I can associate those two tables without touching 'Positionen'?

Thanks!

Re: Problem with synthetic keys

marcus_sommer — Fri, 06 Sep 2019 11:19:53 GMT

Just renaming one Artikel field like: ArtikelNr as ArtikelNr_XYZ would remove the synthetic key. It depends on the content of your article-fields and their context if this will work or if you need to rename one or more of them into ...position or reversed or maybe combining both fields within a single field.

- Marcus

Re: Problem with synthetic keys

wade12 — Fri, 06 Sep 2019 12:06:20 GMT

generally there are 3 options to fix/solve a synthetic key issue:
1. do not load fields causing synthetic key (except for one ... in order to preserve the association)
2. rename fields causing synthetic key (except for one ... in order to preserve the association)
3. create a link table.

Re: Problem with synthetic keys

MH_Newbie — Tue, 10 Sep 2019 08:32:37 GMT

Thank you, it worked out well!

No more synthetic keys 🙂

Re: Problem with synthetic keys

Brett_Bleess — Thu, 19 Sep 2019 14:07:59 GMT

Magdalena, here is a Design Blog link that should potentially help in addition to Marcus' post, there are a bunch of other topics in this area of Community as well, so you may want to use it in the future when you are trying to figure out how to do some things. Glad Marcus was able to get you fixed up this time.

https://community.qlik.com/t5/Qlik-Design-Blog/Synthetic-Keys/ba-p/1472634

Regards,
Brett