Categories:: Data metric functions

UNTRIMMED_STRING_COUNT (system data metric function)¶

Returns the count of non-NULL column values that have leading or trailing whitespace. Use this function to catch data that could break joins or lookups.

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.UNTRIMMED_STRING_COUNT(<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 NUMBER value. NULL values are excluded from the count.

Example¶

Measure the number of untrimmed values in the name column:

SELECT SNOWFLAKE.CORE.UNTRIMMED_STRING_COUNT(
  SELECT
    name
  FROM customers.tables.directory
);