What is the CouchDB equivalent of the SQL COUNT(*) aggregate function?

Question

Yep, I\'m a SQL jockey (sorta) coming into the CouchDb Map/Reduce world. I thought I had figured out how the equivalent of the COUNT(*) SQL aggregator function for CouchDB d

Answer 1

In your reduce just put:

_count

You can also get a sum using:

_sum

so basically reduce: "_sum" or reduce: "_count" and make sure the value your map emits is a valid integer (numeric value)

See "Built in reduce functions".