v.19.14Bug FixFix Rare Crash in ALTER MODIFY COLUMN and Vertical Merge When One of Merged/altered Parts Is Empty (0 Rows) #6746 #6780 (alesapin)Published: November 25, 2025Official CH changelog textFix rare crash in ALTER MODIFY COLUMN and vertical merge when one of merged/altered parts is empty (0 rows) #6746 #6780 (alesapin)PreviousNext