valid_min_length is not working

[JoeriMeurisse]

Describe the bug When running a scan on a SQL server dataset, using a valid_min_length definition on a column, the scan fails with an error message (see screenshot)

Context relevant yaml piece under "columns:"

maiden_name: valid_min_length: 3 tests: - missing_percentage < 15 - invalid_percentage < 15

[albinkjellin]

This seems to be the case for Postgres as well.