[Gvsig_english] join tables::many to one relationship
Francisco José Peñarrubia
fjp at scolab.es
Wed May 13 12:33:01 CEST 2009
Hi Wolfgang.
I was thinking about this e-mail and I realized that when you say a M:1
join, maybe you mean something as a Lookup table. For example, I may
have a field with many records with 0, some others with 1, others with
2... etc.
And another table (lookup table) with the description of this 0, 1 and
2, let's say for example ALL DIRECTIONS (ALL), FROM NodeA to NodeB (FT)
and REVERSE DIRECTION (TF).
I have done the JOIN and it works, but I agree that we must to fix many
things (for example, size of buttons and better field management => in
my case, the link works because both fields are integers).
Hope it helps.
Cheers.
Fran.
Wolfgang Qual escribió:
> Dear list,
> I am a little bit irritated about the join-table function of gvSIG.
> Does the joinfunction of gvSIG only allow to perform 1:1 relationships? Is M:1
> (many to one) not supported? If not: are there plans to realize this feature?
> M:1 would be extremely important for me. Unfortunately, the english handbook
> does not say anything on this detail.
> I would be _most_ grateful, if someone could send me a short answer on this.
>
> Best,
> Wolfgang
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