| ERROR | ON COMMIT with this MV requires 9.0 compatibility or higher |
| CAUSE | You have specified a materialized view that uses some combination of the following: joins aggregation filter conditions in the WHERE clause a remote relation in the FROM list a SUM(x) function without a corresponding COUNT(x) function an omitted COUNT(*) aggregate function a MIN() or MAX() aggregate function in combination with the REFRESH ON COMMIT option while running in less than 9.0 compatibility mode. |
| ACTION | Set your compatibility mode to 9.0 or higher or restructure the materialized view query. |