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    Oracle Error QSM-02170: tables must be identical across the UNION operator

    admin November 16, 2022 No Comments

    Oracle Error Message

    QSM-02170: tables must be identical across the UNION operator

    Reason for the Error

    You have specified a materialized view using the UNION operator and the tables on each side of the UNION operator do not match. Fast refresh is not supported in this context.

    Solution

    Restructure the materialized view query such that the respective sides of the UNION operator have the same table.

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