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Categories: Window

NTILE

Equally splits the rows in each partition into ranked parts specified by the integer value and starting from 1. This function requires the ORDER BY clause.

Syntax​

NTILE(buckets) OVER (PARTITION BY partition_expression ORDER BY order_expression) → int​

  • buckets: A positive integer literal.
  • partition_expression (optional): An expression that groups rows into partitions.
  • order_expression: An expression that specifies the order of the rows within each partition.

Examples

NTILE example 
SELECT "Category", 
  "Descript", 
  "DayOfWeek",
  NTILE(1) 
    OVER (
      PARTITION BY "Category" 
      ORDER BY "DayOfWeek")
FROM Samples."samples.dremio.com"."SF_incidents2016.json"
-- Category, Descript, DayOfWeek, EXPR$3
-- ARSON, ARSON, Friday, 1 
-- EMBEZZLEMENT, EMBEZZLED VEHICLE, Friday, 1