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

    admin November 20, 2024 No Comments

    Oracle Error Message

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

    Reason for the Error

    Incremental refresh of summaries with VARIANCE(X) requires COUNT(X) and SUM(X) columns to be included in the summary definition

    Solution

    Make sure that the required columns are part of the summary definition if incremental refresh capability is desired.

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