dense_rank

Description

Window function: returns the rank of rows within a window partition, without any gaps. The difference between rank and dense_rank is that dense_rank leaves no gaps in ranking sequence when there are ties. That is, if you were ranking a competition using dense_rank and had three people tie for second place, you would say that all three were in second place and that the next person came in third.

Usage

## S4 method for signature 'missing'
dense_rank()

dense_rank(x = "missing")

Arguments

Details

This is equivalent to the DENSE_RANK function in SQL.

Note

dense_rank since 1.6.0

See Also

Other window_funcs: cume_dist, cume_dist, cume_dist,missing-method; lag, lag, lag,characterOrColumn-method; lead, lead, lead,characterOrColumn,numeric-method; ntile, ntile, ntile,numeric-method; percent_rank, percent_rank, percent_rank,missing-method; rank, rank, rank, rank,ANY-method, rank,missing-method; row_number, row_number, row_number,missing-method

Examples

## Not run: 
##D   df <- createDataFrame(mtcars)
##D   ws <- orderBy(windowPartitionBy("am"), "hp")
##D   out <- select(df, over(dense_rank(), ws), df$hp, df$am)
## End(Not run)