如何限制mysql存储过程中传递的日期的数据

时间:2017-07-14 16:02:47

标签: mysql stored-procedures parameter-passing limit pentaho-report-designer

设置存储过程,以便用户可以使用任何日期调用它。我希望能够将日期限制为两个月。

现在,当用户在没有选择任何日期的情况下调用报表时,报表服务器崩溃,因为数据太多。如果过去的日期超过2个月,我希望能够限制行数。

    DELIMITER ;;
    DROP PROCEDURE IF EXISTS rpt_missing_payroll_files_report_test;;
    CREATE PROCEDURE `rpt_missing_payroll_files_report_test`(
      IN BEGIN_DATE VARCHAR(255),
      IN END_DATE VARCHAR(255)
    )
    BEGIN

    SELECT c.id,
           c.name,
           ip.name AS icp_name,
           s.name AS country_name,
           sc.name AS pm_name,
           pc.frequency,
           pc.check_date AS check_date,
           pc.transmit_date,
           IFNULL(ps.updated_at, ph.updated_at) AS submit_date,
           cpp.created_at AS date_received,
           ifnull(cpp.import_filename,'N/A') AS import_filename,
           CASE WHEN cpp.created_at IS NOT NULL THEN 1 END AS date_received_sum,
           CASE WHEN cpp.success = 1 THEN 1 END AS file_successsum,
           DATEDIFF(pc.check_date,cpp.created_at) AS date_diff,
           DATE_FORMAT(BEGIN_DATE,'%m/%d/%Y') AS BeginDate,
           DATE_FORMAT(END_DATE,'%m/%d/%Y') AS EndDate
    FROM co_payroll_calendars pc
    inner join co_infos c on pc.co_info_id = c.id                                                                                                                               
    inner join icp_countries icp on c.icp_country_id = icp.id
    INNER JOIN sys_countries s ON icp.sys_country_id = s.id
    INNER JOIN icp_infos ip ON ip.id = icp.icp_info_id
    LEFT OUTER JOIN co_payroll_entry_setups ps ON pc.id = ps.co_payroll_calendar_id                                                   
    LEFT OUTER JOIN co_payroll_entry_setup_histories ph ON pc.id = ph.co_payroll_calendar_id                                
    LEFT OUTER JOIN co_payroll_processes cpp ON cpp.check_date >= (pc.check_date - INTERVAL 10 DAY ) AND cpp.co_info_id = c.id
    LEFT OUTER JOIN sys_csrs sc ON c.sys_csr_id = sc.id
    -- below is the part i probably need to change
    WHERE  (ifnull(BEGIN_DATE,'') = ''
           OR pc.check_date >= BEGIN_DATE)
      AND (ifnull(END_DATE,'') = ''
           OR pc.check_date <= END_DATE)
    GROUP BY id,
             check_date
    ORDER BY country_name, check_date DESC, c.id;

    END;;
    DELIMITER ;

应该允许以下

CALL rpt_missing_payroll_files_report_test(&#39; 2017-06-01&#39;,&#39; 2017-07-01&#39;)

以下内容不应被允许或限于一定数量的行

CALL rpt_missing_payroll_files_report_test(&#39; 2016-01-01&#39;,&#39; 2017-07-01&#39;)

1 个答案:

答案 0 :(得分:0)

将参数设置为正确的类型(即使用DATE,而不是VARCHAR)。

您还应该检查一下:

LEFT OUTER JOIN co_payroll_processes cpp 
ON cpp.check_date >= (pc.check_date - INTERVAL 10 DAY ) 
AND cpp.co_info_id = c.id

请注意,不等式将选择具有匹配id的所有行,其日期在(pc.check_date - INTERVAL 10 DAY)之后。这可能很多,也可能不是,具体取决于您的架构。您应该在没有GROUP BY和ORDER BY的情况下测试查询,并检查它返回的内容。如果你发现很多重复项,那么你可以通过使用更好的JOIN条件使查询更快。

现在,关于你的主要问题,答案很简单:将此添加到你的proc

IF END_DATE > (BEGIN_DATE + INTERVAL 2 MONTH) THEN
    raise an error
ELSE
    your huge SELECT
END IF

这很简单。以下是如何在mysql存储过程中raise an error(这样做取决于你的版本)。

你也可以简单地在这里“选择你的消息”,然后消息字符串将返回给客户端(然后可能会崩溃,因为它需要一组特定的列,所以提出错误会更好)。