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  • mysql 生成驼峰别名的查询sql

    DROP FUNCTION IF EXISTS underlineToCamel ;
    CREATE FUNCTION underlineToCamel(paramString VARCHAR(200)) RETURNS varchar(200) CHARSET utf8
    DETERMINISTIC
    begin
    set paramString = replace(paramString, '_a', 'A');
    set paramString = replace(paramString, '_b', 'B');
    set paramString = replace(paramString, '_c', 'C');
    set paramString = replace(paramString, '_d', 'D');
    set paramString = replace(paramString, '_e', 'E');
    set paramString = replace(paramString, '_f', 'F');
    set paramString = replace(paramString, '_g', 'G');
    set paramString = replace(paramString, '_h', 'H');
    set paramString = replace(paramString, '_i', 'I');
    set paramString = replace(paramString, '_j', 'J');
    set paramString = replace(paramString, '_k', 'K');
    set paramString = replace(paramString, '_l', 'L');
    set paramString = replace(paramString, '_m', 'M');
    set paramString = replace(paramString, '_n', 'N');
    set paramString = replace(paramString, '_o', 'O');
    set paramString = replace(paramString, '_p', 'P');
    set paramString = replace(paramString, '_q', 'Q');
    set paramString = replace(paramString, '_r', 'R');
    set paramString = replace(paramString, '_s', 'S');
    set paramString = replace(paramString, '_t', 'T');
    set paramString = replace(paramString, '_u', 'U');
    set paramString = replace(paramString, '_v', 'V');
    set paramString = replace(paramString, '_w', 'W');
    set paramString = replace(paramString, '_x', 'X');
    set paramString = replace(paramString, '_y', 'Y');
    set paramString = replace(paramString, '_z', 'Z');
    set paramString = replace(paramString, '_', '');
    RETURN paramString;
    end

    SELECT
    CONCAT(
    "select ",
    GROUP_CONCAT(
    COLUMN_NAME,
    " ",
    underlineToCamel (COLUMN_NAME)
    ),
    " from ",
    TABLE_NAME
    )
    FROM
    INFORMATION_SCHEMA. COLUMNS
    WHERE
    TABLE_NAME = 'yourtablename'
    AND TABLE_SCHEMA = 'yourdbname'
    GROUP BY
    TABLE_NAME;

    古之善为士者,微妙玄通,深不可识
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  • 原文地址:https://www.cnblogs.com/xzhg/p/15067478.html
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