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  • 报错:不是 GROUP BY 表达式

    报错如下:

     错误sql

    SELECT
        b.batchno,
        b.subtypeno,
        b.entity_id,
        b.package_spec,
        b.package_ratio,
        b.produce_date,
        b.validate_date,
        a.PACKLAYER,
        a.CURCODE,
        bc.product_name,
        bc.spec,
        bc.pack_unit,
        bc.authorized_no,
        p.product_no 
    FROM
        B_P_CODE_MA4KL1QT221 a,
        b_p_code_rela b
        LEFT JOIN b_cndc_subtypeno c ON b.subtypeno = c.subtypeno
        LEFT JOIN b_cts_product bc ON c.cndc = bc.drug_id_code
        LEFT JOIN b_product p ON p.esc_subtypeno = c.subtypeno 
    WHERE
        a.RELA_ID = b.rela_id 
        AND a.ISVALID = '1' 
        AND b.isvalid = '1' 
        AND c.isvalid = '1' 
        AND p.is_valid = '1' 
        AND bc.isvalid = '1' 
        AND a.CURCODE = 'MA4KL1QT23211026000001'
    GROUP BY
        b.rela_id

    可能的原因如下:

    1、GROUP BY 和 ORDER BY一起使用时,ORDER BY要在GROUP BY的后面。

    2、ORDER BY 的字段在GROUP BY 后面必须有

    3、在select需要查询的语句中选中的字段,必须出现在group by子句中

    根据第3条,我们的sql不满足,故删除group by 语句,因为rela_id是主键,不需要根据rela_id来分组。

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  • 原文地址:https://www.cnblogs.com/zwh0910/p/15472577.html
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