On Tue, 24 Feb 2026 at 03:13, Tender Wang <[email protected]> wrote: > > Alexander Korotkov <[email protected]> 于2026年2月15日周日 09:23写道： > > > > I found it strange that ExecMergeMatched() checks for > > IsolationUsesXactSnapshot() in the TM_Deleted case, but not in the > > TM_Updated case. > > I tried "update test set val = val + 100;" but the SQL reported a > "could not serialize access due to concurrent update" error. > It seems that the MERGE command should behave identically to UPDATE > when performing a match action. >
Yes, I agree. I think this is a bug (probably just an oversight in the original MERGE commit). Regards, Dean
