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Calculates a percentile over a partition, assuming a continuous distribution of values defined. Results are interpolated, rather than matching any of the specific column values. PERCENTILE_CONT is available as an Window function. See also PERCENTILE_DISC, which returns a percentile over a partition equal to a specific column value. For more information on usage, please refer to Window Functions.

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Syntax

PERCENTILE_CONT( <value> ) WITHIN GROUP ( ORDER BY <order_by> [ { ASC | DESC } ] ) [ OVER ( PARTITION BY <partition_by> ) ]

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Parameters

ParameterDescriptionSupported input types
<value>A value between 0.0 and 1.0.DOUBLE PRECISION, REAL
<order_by>An expression used for the order by clause.Any numeric type
<partition_by>An expression used for the partition by clause.Any

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Return Types

DOUBLE PRECISION

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Example

The example below calculates the max percentile value based on continuous distribution of players, partitioned by game level. 
SELECT
	nickname,
	PERCENTILE_CONT(1.0) WITHIN GROUP (ORDER BY current_score) OVER (PARTITION BY level;) AS percentile
FROM
	players;
Returns:
nicknamepercentile
kennethpark90
sabrina2185
ymatthews80
rileyjon75