v.25.12Bug Fix (user-visible misbehavior in an official stable release)
Add subcolumn X
Fix Cannot add subcolumn X.Y: column with this name already exists. Resolves #89599. #89602 (Azat Khuzhin).Fix Cannot add subcolumn X.Y: column with this name already exists. Resolves #89599. #89602 (Azat Khuzhin).