在文件framework/db/CDbCommand.php中的第173行：$this->_text=preg_replace('/{{(.*?)}}/',$this->_connection->tablePrefix.'\1',$value);
如果$this->_connection->tablePrefix为空单不为null那么替换后的SQL可能包含保留关键字从而导致了SQL语法的错误，解决方案：
$this->_text=preg_replace('/{{(.*?)}}/','`'.$this->_connection->tablePrefix.'\1'.'`',$value);
这样就可以了

I don't think we have a developer reading Chinese … can you translate (and explain) in english ?

In the file framework/db/CDbCommand.php,line 173:

$this->_text=preg_replace('/{{(.*?)}}/',$this->_connection->tablePrefix.'\1',$value);

if tables without prefix，'$this->_text' may be contains a classic words in the sql,`groups` for example.

so a sql error occured.

you can create a new project without prefix and create a new survey,after click the save button to jump a new page to show the survey list。

OK,

Can you report the issue please ?
www.limesurvey.org/community/bug-tracker