Categories:: Differential privacy functions

DP_ESTIMATE_HIGH¶

Returns the upper bound of the noise interval, which is used by differential privacy to help analysts determine how much noise has been introduced into query results.

By default, there is a 95% confidence level that the actual value is equal to or smaller than the upper bound.

See also:: DP_ESTIMATE_LOW

Syntax¶

DP_ESTIMATE_HIGH( <aggregated_column> )

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Arguments¶

aggregated_column: Alias of a column that has been aggregated by the query.

Returns¶

Returns an integer that is the upper bound of the noise interval.

If the table is not protected by differential privacy, returns NULL.

Examples¶

To return the upper bound of the noise interval for the aggregation of the column num_claims:

SELECT SUM(num_claims) AS sum_claims,
  DP_INTERVAL_HIGH(sum_claims)
  FROM t1;

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