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我在使用 Zend_Db_Table_Select 从 SQL 查询中获取 COUNT() 时遇到问题,我认为这可能是一个错误,因为它应该生成的 SQL 确实有效。这是 Zend Select Query:($this 是 Zend_Db_Table,table1在本例中重命名为)

    $select = $this->select();
    $select->setIntegrityCheck(false);

    // Select Count
    $select->from($this, array("COUNT(*) as 'COUNT'"))
           ->joinLeft('users', 'table1.userID = users.userID')
           ->joinLeft('table2', 'users.anotherKey = table2.anotherKey');

    // Add Where clause after join
    $select->where('users.anotherKey = ?', $anotherKeyValue);

这给出了错误:

SQLSTATE[42000]: Syntax error or access violation: 1140 
Mixing of GROUP columns (MIN(),MAX(),COUNT(),...) with no GROUP columns is 
illegal if there is no GROUP BY clause`

但是,这个查询...

SELECT COUNT(*) AS 'count' FROM table1
    LEFT JOIN users ON table1.userID = users.userID
    LEFT JOIN table2 ON users.anotherKey = table2.anotherKey
    WHERE users.anotherKey = [anotherKeyValue]

...在对数据库运行时返回没有错误的预期结果。任何想法发生了什么,为什么会出现错误,以及如何解决它?

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1 回答 1

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您是否尝试过查看 zend_db 产生的实际查询?

于 2010-02-06T06:33:49.553 回答