ORA-30455: summary contains VARIANCE without corresponding SUM & COUNT

ORA-30455: summary contains VARIANCE without corresponding SUM & COUNT
Cause: Incremental refresh of summaries with VARIANCE(X) requires COUNT(X) and SUM(X) columns to be included in the summary definition
Action: Make sure that the required columns are part of the summary definition if incremental refresh capability is desired.

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小智 2018-08-30 16:49

ORA-30455：summary包含VARIANCE，没有相应的SUM＆COUNT,
.原因：使用VARIANCE（X）的增量刷新汇总需要将COUNT（X）和SUM（X）列包含在汇总定义中,
.操作：如果需要增量刷新功能，请确保所需的列是摘要定义的一部分。,
.

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ORA-30455: summary contains VARIANCE without corresponding SUM & COUNT

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