Categories:: Data metric functions

NOT_NULL_COUNT (system data metric function)¶

Returns the count of column values that are not NULL for the specified column in a table.

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.NOT_NULL_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:

DATE
FLOAT
NUMBER
TIMESTAMP_LTZ
TIMESTAMP_NTZ
TIMESTAMP_TZ
VARCHAR

Returns¶

The function returns a NUMBER value.

Example¶

Measure the number of non-NULL values for the SSN column:

SELECT SNOWFLAKE.CORE.NOT_NULL_COUNT(
  SELECT
    ssn
  FROM hr.tables.empl_info
);