sum
ReQL command: sum
Command syntax
sequence.sum([field | function]) → number r.sum(sequence, [field | function]) → number
Description
Sums all the elements of a sequence. If called with a field name, sums all the values of that field in the sequence, skipping elements of the sequence that lack that field. If called with a function, calls that function on every element of the sequence and sums the results, skipping elements of the sequence where that function returns nil or a non-existence error.
Returns 0 when called on an empty sequence.
Example: What’s 3 + 5 + 7?
r([3, 5, 7]).sum().run(conn)
Example: How many points have been scored across all games?
r.ta
