Test gorethinkdb driver for a sum of values in RethinkDB table.

values.go

package main

import (
	r "github.com/dancannon/gorethink"
	"log"
)

type valT struct {
	V float64
}

func main() {
	dbs, err := r.Connect(map[string]interface{}{
		"address":  "localhost:28015",
		"database": "test",
	})
	if err != nil {
		log.Fatalln(err.Error())
	}

	rows, err := r.Db("test").Table("values").Run(dbs)
	if err != nil {
		log.Fatalln(err.Error())
	}
	var total float64 = 0.0
	for rows.Next() {
		var row valT
		if err := rows.Scan(&row); err != nil {
			log.Fatalln(err)
		}
		total += row.V
	}
	println(total)
}

values.py

import sys
import rethinkdb as r


r.connect( "localhost", 28015).repl()
table = r.db('test').table('values')

if len(sys.argv) > 1:
    print "Inserting records into 'values' table"
    import random
    random.seed()
    tables = r.db('test').table_list().run()
    print(tables)
    if 'values' not in tables:
        print 'creating "values" table'
        r.db('test').table_create('values').run()
    table.delete().run()
    vals = [{"v": random.randint(0, 1000)} for i in xrange(17733)]
    table.insert(vals, durability="soft").run()


total = 0
for r in table.run():
    total += r['v']
print total

# JS Data explorer reduction function:
# r.db('test').table('values').map(r.row('v')).reduce(function(acc, val) { return acc.add(val)}, 0)