fetching data: how to filter?

[Alexander Gabriel]

Hi
I want to fetch documents from a CouchDb named evab. The documents include a
field "Typ" and I want to fetch those with Typ = Beobachtung.

So far I've tried:

   - curl -d "{\"Typ\":\"Beobachtung\"}" -X POST
   
http://username:secretpassword@127.0.0.1:5984/evab/_bulk_docs?include_docs=true>
Beobachtungen.json
   - curl -d "{\"docs\": [{\"Typ\":\"Beobachtung\"}]}" -X POST
   
http://username:secretpassword@127.0.0.1:5984/evab/_all_docs?include_docs=true>
Beobachtungen.json
   - replacing {\"Typ\":\"Beobachtung\"} or {\"docs\":
   [{\"Typ\":\"Beobachtung\"}]} with "@TypBeob_Kriterien.json" to circumvent
   problems with the windows-command-tool and " or '.

I consistently get all the data of all the docs in the CouchDb.

>From the documentation I have not understood:

   - _all_docs or _bulk_docs? It seems that both work the same.
   - Is ist maybe only possible to filter with keys = _id's?
   - Is it possible to fetch the data from a view?


Or simply: What is the best way to do it?

Thanks for help!

Alexander Gabriel