Solr - Getting facet counts without returning search results

问题

I need to return only the facet counts from solr. So I basically want to search over all documents and return the facet counts, but I don't want to return any search results. Is this possible?

Thanks

回答1:

Setting facet=true will enable faceting and setting rows=0 will prevent any results being returned. Conveniently the numFound will show you how many results were found.

回答2:

I guess the obvious solution would be to search using a wildcard and specify that you want zero results returned.

That's my solution so far.

回答3:

So, from what I have understood if I need to get facets count for all documents in a paginated system, I need to make two requests (selects):
- The first to get the facets count for all documents.
- And the second to get the documents from current page.

来源：https://stackoverflow.com/questions/212446/solr-getting-facet-counts-without-returning-search-results