topic Re: Data model issue in QlikView

Data model issue

Wed, 04 Sep 2013 13:17:04 GMT

Hi everyone,

I need some help for the conception of my data model, I'm a bit lost. I just took over a project, and I have to finalize it.

But the conception is not goot enough to make the right things.

So here's the deal :

The important tables are Agent and Calendrier.

I have to calculate the percantage of absenteeism, by choosing between several years, and build an histogram with that.

So I have to count the number of days missed by all the employees at a year Y (or Y and Y+1 to see how it changed) and divide it by the number of employees the same year(s)

The table agent is build this way :

IDF_AGENT	num_mois	num_annee
12	1	2013
12	2	2013
15	5	2012

So the Agent #12 was employed in january and february 2013, and the #15 only on May 2012.

And the Calendrier

IDF_AGENT	NUM_JOUR	NUM_MOIS	NUM_ANNEE
12	2	2	2013
12	3	2	2013
12	4	2	2013
15	12	5	2012

The #12 missed 3 days in february and #15 only one day in may.

But when I want to make an histogram, there is an issue,because I can't link num_annee.agent and NUM_ANNEE.calendrier.

So I don't find a solution to solve it. Can I create a 3rd table which combine all the years ? But I don't know how to make it.

Rebuild a date model ? I don't see how to build it to make it better. Can someone help me ? I attached my qvw.

Thx a lot.

Re: Data model issue

Wed, 04 Sep 2013 13:18:13 GMT

BTW, the histogram is in the Synthèse tab.

Re: Data model issue

Anonymous — Wed, 04 Sep 2013 15:53:36 GMT

Salut,

Je suppose au vu de ton appli que tu parle français 🙂

Alors une solution à ton problème, si je l'ai bien compris, pourrait être de rajouter le nombre de jour d'absence par IDF_AGENT dans ta table agent. Il faut pour cela créer une table temporaire qui va compter le nombre de jour d'absence par IDF_AGENT, par mois et par année et ensuite joindre cette table à la table agent.

En voici le code:

tmp:

LOAD

IDF_AGENT,

NUM_ANNEE as num_annee,

NUM_MOIS as num_mois,

count(NUM_JOUR) as NbJourAbsence

RESIDENT

calendrier

GROUP BY

IDF_AGENT,NUM_ANNEE,NUM_MOIS

;

JOIN

(agent)

LOAD

IDF_AGENT,

num_annee,

num_mois,

NbJourAbsence

RESIDENT

tmp

;

DROP TABLE tmp;

Maintenant que tu as le nombre de jour d'absence de chaque agent par mois et par année, tu peux faire ton graphe avec en dimension num_annee et/ou num_mois.

Re: Data model issue

DavidFoster1 — Wed, 04 Sep 2013 16:01:25 GMT

Hi Antonin.

The link between agent and calendar is confusing. The agent table looks like a set of employment records (this person, on this day). If that is correct, then the link to the calendar should be on a date value not the agent value.

Could you explain the purpose of both the tables?

Re: Data model issue

Thu, 05 Sep 2013 07:40:35 GMT

Thanks for trying to help me David !

Et merci beaucoup sg_bobbyraj, c'était quand même assez simple, j'y avais pensé, mais je pensais qu'il y aurait une difficulté. M'enfin, tu me retires une grosse épine du pied !