SQL-MapReduce Call - Aster Analytics

SELECT * FROM ApproxPercentileReduce (
  ON ( SELECT * FROM ApproxPercentileMap (
    ON cracker
    TargetColumns ('pricesunshine', 'pricekeebler',
      'pricenabisco', 'priceprivate')
    GroupColumns ('choice')
    ErrorRate (2)
    )
  ) PARTITION BY choice
  GroupColumns ('choice')
  Percentile (0, 25, 50, 75, 100)
  TargetColumns ('pricesunshine', 'pricekeebler',
    'pricenabisco', 'priceprivate')
) ORDER BY choice, percentile;