Symfony1 mysql到symfony 1.4.9中的Criteria（）

我在mySQL中有以下复杂的查询

SELECT courseId,courseName
FROM course WHERE courseId NOT IN (SELECT courseId FROM coursestaken NATURAL JOIN student WHERE grade >= 60 AND studentId =2) 
AND
courseId NOT IN (SELECT courseId FROM stable WHERE studentId = 2 )
AND
courseId NOT IN (SELECT DISTINCT courseId FROM prerequisites 
WHERE
prereqId NOT IN (SELECT courseId FROM coursestaken NATURAL JOIN student WHERE grade >= 60 AND studentId =2  )) ; 

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有人能帮我将其转换为推进中的Criteria（）查询吗？

尝试在推进中使用prepare函数，如下所示

    $con=Propel::getConnection();
            $obj = $con->prepare("SELECT courseId,courseName
FROM course WHERE courseId NOT IN (SELECT courseId FROM coursestaken NATURAL JOIN student WHERE grade >= 60 AND studentId =2) 
AND
courseId NOT IN (SELECT courseId FROM stable WHERE studentId = 2 )
AND
courseId NOT IN (SELECT DISTINCT courseId FROM prerequisites 
WHERE
prereqId NOT IN (SELECT courseId FROM coursestaken NATURAL JOIN student WHERE grade >= 60 AND studentId =2  )) ");
            $obj->execute();
            $resultset = $obj->fetchAll();

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+这是我的荣幸。当SQL很复杂时，不要尝试创建Criteria语句，尤其是当您不返回水合对象时。使用此链接作为正确使用spreep的指南：同时尽量避免过多的子查询，通常会导致性能问题。