Nullable Columns Recognized and Null-values Handled Correctly by Odbc-bridge #7402 (vasily Nemkov)

Why it matters

This feature addresses issues with the ODBC interface where Nullable columns were not properly recognized and NULL values were mishandled. It improves data interoperability and correctness when using ODBC connections to query ClickHouse.

How to use it

Users can utilize this improvement transparently by connecting to ClickHouse via the ODBC bridge as usual. No additional configuration is required to benefit from correct handling of Nullable columns and NULL values.