Categories:

Data metric functions

INVALID_PROBABILITY_RANGE_COUNT (system data metric function)

Returns the count of non-NULL column values that are outside the range for a probability, 0 to 1 inclusive.

This topic provides the syntax for calling the function directly. To learn how to associate the function with a table or view so it runs at regular intervals, see Associate a DMF.

Syntax

SNOWFLAKE.CORE.INVALID_PROBABILITY_RANGE_COUNT(<query>)

Arguments

query

Specifies a SQL query that projects a single column.

Allowed data types

The column projected by the query must have one of the following data types:

  • FLOAT
  • NUMBER

Returns

The function returns a NUMBER value. NULL values are not counted.

Usage notes

  • The values 0 and 1 are in range.
  • NaN values are counted as out of range.

Example

Measure the number of out-of-range probabilities in the churn_score column:

SELECT SNOWFLAKE.CORE.INVALID_PROBABILITY_RANGE_COUNT(
  SELECT
    churn_score
  FROM ml.tables.predictions
);