Categories:: Data metric functions

INVALID_PROBABILITY_RANGE_PERCENT (system data metric function)¶

Returns the percentage of column values that are outside the range for a probability, 0 to 1 inclusive. The percentage is computed over the total row count, including NULL values in the denominator.

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_PERCENT(<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 FLOAT value. The function returns NULL if the table or view has no rows.

Usage notes¶

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

Example¶

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

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