Categories:: Data metric functions

ZERO_PERCENT (system data metric function)¶

Returns the percentage of column values that are equal to zero for the specified column in a table. The percentage is computed over the total row count, including NULL values in the denominator. NULL values are not counted as zero.

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.ZERO_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.

Example¶

Measure the percentage of zero values in the amount column:

SELECT SNOWFLAKE.CORE.ZERO_PERCENT(
  SELECT
    amount
  FROM sales.tables.orders
);