Lucene OR查询不起作用 [英] Lucene OR query not working

问题描述

我正在尝试通过以下要求查询Solr: _我想获取所有没有特定字段的文件

I am trying to query Solr with following requirement: _ I would like to get all documents which not have a particular field

-排他性:[* TO *]

-exclusivity:[* TO *]

• 我想获取所有具有此字段并获得特定值的文档

排他性:(无)

exclusivity:(None)

因此，当我尝试使用以下命令查询Solr 4时:

so when I am trying to query Solr 4 with:

fq =(-排他性:[* TO *])或排他性:(无)

fq=(-exclusivity:[* TO *]) OR exclusivity:(None)

仅当文档中存在该字段且值为None时，我才得到结果，但结果不包含第一个查询的结果！

I have only got results if the field exists in document and the value is None but results not contain results from first query !!

我不明白为什么它不起作用

I cannot understand why it is not working

推荐答案

我已经找到了解决此问题的方法.我错误地假设了-"在solr.I中的工作原理

I have founded answer to this problem. I have made bad assumption how "-" works in solr.I though that

-排他性:[* TO *]

-exclusivity:[* TO *]

将没有排他性字段的所有内容添加到数据集中，但事实并非如此. -"只能从数据集中排除内容.顺便说一句femtoRgon你是对的，但我将它用作fq(过滤器查询)，而不是用作主查询，我忘了提到这一点.

add everything without exclusivity field to the data set but it is not the case. The '-' could only exclude things from data set. BTW femtoRgon you are right but I am using it as fq (filter query) not as a master query I have forgotten to mention that.

所以解决方案就像

-排他性:([* * *和-(无))

-exclusivity:([* TO *] AND -(None))

完整查询看起来像

/?q = *:*& fq =-排他性:([* TO *] AND-(None))

/?q=*:*&fq=-exclusivity:([* TO *] AND -(None))

所以这意味着我将获得所有不具有字段专有性或具有此字段的字段，并使用值None填充该字段.

so that means I will get everything does not have field exclusivity or has this field and it is populated with value None.

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