v.19.9Improvement

Add Setting Forbidden by Default to Create Table with Suspicious Types for Lowcardinality #5448 (olga Khvostikova)

Add setting forbidden by default to create table with suspicious types for LowCardinality #5448 (Olga Khvostikova)
Adds a new setting that forbids creating tables with suspicious types within LowCardinality columns by default.

Why it matters

To prevent accidental or unintended use of problematic data types inside LowCardinality columns, which can lead to performance issues or incorrect behavior, enhancing data integrity and stability.

How to use it

By default, the setting is enabled, forbidding creation of tables with suspicious types in LowCardinality columns. Users can disable this behavior if necessary by adjusting the relevant setting in their configuration.