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  • 存储过程-删除、新建索引

    DROP PROCEDURE
    IF EXISTS drop_demo_index1;
    delimiter //


    CREATE PROCEDURE drop_demo_index1 (
    IN p_tablename VARCHAR (100),
    IN p_idxname VARCHAR (100)
    )
    BEGIN
    DECLARE
    str VARCHAR (250) ;
    SET @str = concat(
    'drop index ',
    p_idxname,
    ' on ',
    p_tablename
    ) ; SELECT
    count(*) INTO @cnt
    FROM
    information_schema.statistics
    WHERE
    table_name = p_tablename
    AND index_name = p_idxname ;
    IF @cnt > 0 THEN
    PREPARE stmt
    FROM
    @str ; EXECUTE stmt ;
    END
    IF ;
    END ;//
    delimiter;
    CALL drop_demo_index1('表名','索引名');

    create index 索引 ON 表名(列名);

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  • 原文地址:https://www.cnblogs.com/csk-1/p/10532870.html
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