我正在尝试理解SQLite v2.8.17上团体的一种奇怪的行为
以下是代码:
<?php
$selectMaxQuery = $this->_db->prepare('SELECT COUNT(*) AS c FROM (SELECT MAX(groupCode) FROM docs GROUP BY groupCode)');
$selectQuery = $this->_db->prepare(' SELECT COUNT(*) AS c FROM (SELECT groupCode FROM docs GROUP BY
请描述您的问题
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