MySQL-使用NOT EXISTS中已定义的类

我有一个查询来选择所有未投票给ProProposalBundle:Proposal'Vote的提案。v.decision中可能存在"not_voted"值，也可能不存在。这就是我使用NOT EXIST的原因。

SELECT p 
FROM ProProposalBundle:Proposal p 
INNER JOIN ProProposalBundle:Proposal'Vote v 
    WITH v.proposal = p 
        AND (v.decision = 'not_voted' OR NOT EXISTS (SELECT v FROM v WHERE v.user = {$user})) 
WHERE p.community = {$community}

但它给我返回了一个错误：

[Semantical Error] line 0, col 181 near 'v WHERE v.user': Error: Class 'v' is not defined. 

它与NOT EXISTS部分有关，其中v是以前理论上定义的。我也尝试过：

... NOT EXISTS (SELECT v FROM ProProposalBundle:Proposal'Vote v WHERE v.user = {$user}))

但现在我得到了：

[Semantical Error] line 0, col 220 near 'v WHERE v.user': Error: 'v' is already defined. 

你知道我做错了什么吗？