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I'm relatively new to CouchDB (more specifically Cloudant if it matters) and I'm having a hard time wrapping my head around something.

Assume the following (simplified) document examples:

{ "docType": "school", "_id": "school1", "state": "CA" }
{ "docType": "teacher", "_id": "teacher1", "age": "40", "school": "school1" }

I want to find all the teachers aged 40 in California.

Maybe my mind is still stuck on SQL world, but I'm having a hard time understanding how to run a query that uses data from different documents...

PS. let me know if this is more suited to StackOverflow...

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For quick one time queries I would use _find, for permanent ones where performance is important I would create a view for this.

Views are very well explained in the booklet "Writing and Querying MapReduce Views in CouchDB: Tools for Data Analysts".

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