Question

我有这个存储过程，它应该检查字段是否为空并执行一个查询，否则执行另一个但我收到错误。这是代码：

DELIMITER $$
 CREATE PROCEDURE mw_info(
    m_date_begin INTEGER,
    m_date_end INTEGER,
    m_from INTEGER,
    m_numberOfrecords INTEGER,
    m_callsource VARCHAR(15))
 BEGIN

    IF (m_callsource = '') THEN

       SELECT * 
         FROM mw_iaa 
        WHERE calllegcode IN ('CB_A','CB_B')
          AND calltime BETWEEN m_date_begin AND m_date_end
        ORDER BY calltime DESC 
        LIMIT m_from, m_numberOfrecords;

    ELSE     

       SELECT * 
         FROM mw_iaa 
        WHERE calllegcode IN ( 'CB_A', 'CB_B')
          AND callsource = m_callsource
          AND calltime BETWEEN m_date_begin AND m_date_end
        ORDER BY calltime DESC 
        LIMIT m_from, m_numberOfrecords;    

    END IF; 

 END;  
 END$$
DELIMITER ;

这就是错误：

错误代码：1064   您的SQL语法有错误;检查手册   对应于您的MySQL服务器版本，以便使用正确的语法   靠近'其他
    SELECT * FROM mw_iaa WHERE calllegcode'在第1行

问题是什么？

Answer 1

你只能在一个查询中执行此操作，并像这样删除IF语句：

SELECT * 
FROM mw_iaa
WHERE ((m_callsource = '') OR (callsource = m_callsource))
  AND calllegcode IN ('CB_A', 'CB_B')
  AND callsource = m_callsource
  AND calltime BETWEEN m_date_begin AND m_date_end
ORDER BY calltime DESC 
LIMIT m_from, m_numberOfrecords;

然后，每当您使用m_callsource传递''参数时，条件((m_callsource = '') OR (callsource = m_callsource))将被忽略，因为它未显示。

Answer 2

我看到过这样的错误，然后我在程序源中有了制表符。

尝试用空格替换所有标签字符。

使用if语句存储过程

2 个答案: