Categories:: Data metric functions

TRUE_PERCENT (system data metric function)¶

Returns the percentage of column values that are TRUE. 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.TRUE_PERCENT(<query>)

Arguments¶

query: Specifies a SQL query that projects a single column.

Allowed data types¶

The column projected by the query must have the BOOLEAN data type.

Returns¶

The function returns a FLOAT value. The function returns NULL if the table or view has no rows.

Usage notes¶

FALSE and NULL values are not counted.

Example¶

Measure the percentage of TRUE values in the is_active column:

SELECT SNOWFLAKE.CORE.TRUE_PERCENT(
  SELECT
    is_active
  FROM crm.tables.accounts
);