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SELECT DISTINCT tong.tongdate
FROM tong
WHERE EXISTS (SELECT *
FROM tmaterial
JOIN stmaterial
ON tmaterial.stmguid = stmaterial.stmguid
WHERE tmaterial.tguid = tong.tguid
AND ( (Abs(tmaterial.误差率) > stmaterial.误差率上限)
OR (Abs(tmaterial.误差率) > stmaterial.误差率下限)
)