Percentile

Function Name	Description
APPROX_PERCENTILE	Computes the approximate percentile of the given column and quantile.
MEDIAN	Computes the median of the specified column's values based on a continuous distribution.
PERCENTILE_CONT	Computes a percentile value based on a continuous distribution of the column input.
PERCENTILE_DISC	Computes a specific percentile for sorted values in a column.