Hi all, In concurrently refreshing materialized view, we check whether that materialized view has suitable index(unique and not having WHERE condition), after filling data to new snapshot (refresh_matview_datafill()). This logic leads to taking a lot of time until postgres returns ERROR log if that table doesn't has suitable index and table is large. it wastes time. I think we should check whether that materialized view can use concurrently refreshing or not in advance. The patch is attached.
Please give me feedbacks. -- Regards, -- Masahiko Sawada
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