over: over

In SparkR: R Front End for 'Apache Spark'

Description

Define a windowing column.

Usage

over(x, window)

## S4 method for signature 'Column,WindowSpec'
over(x, window)

Arguments

x	a Column, usually one returned by window function(s).
window	a WindowSpec object. Can be created by windowPartitionBy or windowOrderBy and configured by other WindowSpec methods.

Note

over since 2.0.0

See Also

Other column_func: alias(), between(), cast(), endsWith(), otherwise(), startsWith(), substr()

Examples

## Not run: 
  df <- createDataFrame(mtcars)

  # Partition by am (transmission) and order by hp (horsepower)
  ws <- orderBy(windowPartitionBy("am"), "hp")

  # Rank on hp within each partition
  out <- select(df, over(rank(), ws), df$hp, df$am)

  # Lag mpg values by 1 row on the partition-and-ordered table
  out <- select(df, over(lead(df$mpg), ws), df$mpg, df$hp, df$am)

## End(Not run)

SparkR documentation built on June 3, 2021, 5:05 p.m.