the following query on the Movielens dataset , is sorting by the count of
ratings for a movie. It looks like the results are ordered by partition
?
scala> val results =sqlContext.sql("select movies.title, movierates.maxr,
movierates.minr, movierates.cntu from(SELECT ratings.product,
max(ratings.rating) as maxr, min(ratings.rating) as minr,count(distinct
user) as cntu FROM ratings group by ratings.product order by cntu desc)
movierates join movies on movierates.product=movies.movieId ")
scala> results.take(30).foreach(println)
[Right Stuff, The (1983),5.0,1.0,750]
[Lost in Space (1998),5.0,1.0,667]
[Dumb & Dumber (1994),5.0,1.0,660]
[Patch Adams (1998),5.0,1.0,474]
[Carlito's Way (1993),5.0,1.0,369]
[Rounders (1998),5.0,1.0,345]
[Bedknobs and Broomsticks (1971),5.0,1.0,319]
[Beverly Hills Ninja (1997),5.0,1.0,232]
[Saving Grace (2000),5.0,1.0,186]
[Dangerous Minds (1995),5.0,1.0,141]
[Death Wish II (1982),5.0,1.0,85]
[All Dogs Go to Heaven 2 (1996),5.0,1.0,75]
[Repossessed (1990),4.0,1.0,53]
[Assignment, The (1997),5.0,1.0,49]
[$1,000,000 Duck (1971),5.0,1.0,37]
[Stonewall (1995),5.0,1.0,20]
[Dog of Flanders, A (1999),5.0,1.0,8]
[Frogs for Snakes (1998),3.0,1.0,5]
[It's in the Water (1998),3.0,2.0,3]
[Twelve Monkeys (1995),5.0,1.0,1511]
[Ransom (1996),5.0,1.0,564]
[Alice in Wonderland (1951),5.0,1.0,525]
[City Slickers II: The Legend of Curly's Gold (1994),5.0,1.0,392]
[Eat Drink Man Woman (1994),5.0,1.0,346]
[Cube (1997),5.0,1.0,233]
[Omega Man, The (1971),5.0,1.0,224]
[Stepmom (1998),5.0,1.0,146]
[Metro (1997),5.0,1.0,100]
[Death Wish 3 (1985),5.0,1.0,72]
[Stalker (1979),5.0,1.0,52]
