如何查询 lucene 的空字段? [英] How to query lucene for empty fields?

问题描述

我希望在我的查询的第二部分有一个结果列表，而数据不为空.我发现如何在 solr 中做到这一点，但在 lucene 中却没有.任何人都有一个想法谢谢

I want in 2nd part of my query to have a list of result for while data not null. I find how do it in solr but not in lucene. Anyone have a idea Thanks

字符串:

(field_one:search AND field_two:3000) OR (field_three:search AND field_two:3000 AND NOT NULL field_one)

( field_one:search AND field_two:3000) OR (field_three:search AND field_two:3000 AND NOT NULL field_one )

查询:

+field_one:搜索 +field_two:3000+field_three:search +field_two:3000 -field_one:null

+field_one:search +field_two:3000 +field_three:search +field_two:3000 -field_one:null

推荐答案

*:*  -MY_FIELD_NAME:[* TO *] 

上面应该做，注意 * : * for Lucene.

The above should do it, note the * : * for Lucene.

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