On Fri, May 29, 2009 at 9:20 AM, Douglas Fils <[email protected]> wrote:
> Forgive the noob question.. but I've not been able to easily locate an
> approach today to getting a return that gives all the unique field names in
> a couch database.
>
> It's not too hard to generate a map function that emits an array of the
> field names in a particular record....
> (please note this is about as much JS as I have ever written) :)
> function(doc) {
> var i = 0;
> var keyNames = new Array();
> for (var key in doc) {
> keyNames[i] = key
> i++;
> }
> emit(null,keyNames);
> }
>
> However, once I pass that over to the reduce (assuming this is even the way
> to do it) I don't see an easy way to get the unique intersection of the
> various field names.
>
> Any help would be appreciated...
> Thanks
> Doug
>
>
maybe the map should be
function(doc) {
for (var key in doc) {
emit(key,"")
}
}
and the reduce
function(keys,values) {
return null;
}
and just use the returned keys as the field names.
--- Blair
