标题: ORA-30455: summary contains VARIANCE without [打印本页] 作者: admin 时间: 2016-9-4 21:13 标题: ORA-30455: summary contains VARIANCE without ORA-30455: summary contains VARIANCE without corresponding SUM &COUNT Cause: Incremental refreshof summaries with VARIANCE(X) requires
COUNT(X) and SUM(X) columns to be included in the summary definition Action: Make sure that therequired columns are part of the summary definition if
incremental refresh capability is desired.