Categories:: Data metric functions

INVALID_CUSIP_PERCENT (system data metric function)¶

Returns the percentage of column values that are not a CUSIP: eight uppercase letters or digits followed by a digit. 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_CUSIP_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 VARCHAR data type.

Returns¶

The function returns a FLOAT value.

Usage notes¶

The function checks the format only; it does not validate the check digit.
Lowercase letters do not match.

Example¶

Measure the percentage of invalid CUSIPs in the cusip column:

SELECT SNOWFLAKE.CORE.INVALID_CUSIP_PERCENT(
  SELECT
    cusip
  FROM finance.tables.securities
);