查询野外生存的CloudSearch [英] Query for field existence in CloudSearch
问题描述
假设我有一个可选字段名为XYZ在我在CloudSearch索引的文件清单。
Suppose I have an optional field called 'xyz' in the list of documents I've indexed in CloudSearch.
如何查询CloudSearch,使其只返回那些包含XYZ?
How do I query CloudSearch so that it returns only those documents that contain 'xyz'?
如果我预先知道,这是一个正整数,我也许可以做这样的事情,以获得所需的列表:
Q = XYZ:[0,}&安培; q.parser =结构化
If I know up front, that it's a positive integer, I can probably do something like this to get the required list:
q=xyz:[0,}&q.parser=structured
但我怎么做,如果XYZ存储一些其他类型的如字符串或整数/字符串列表等,?
But how do I do it if 'xyz' stores some other type like a string or a list of ints/strings etc.,?
顺便说一句,我使用Solr的面前,在那里,我可以简单地做 Q = XYZ:*
来实现这一目标。请问CloudSearch支持这种定期EX pressions?
BTW, I've used Solr before, and there, I could simply do q=xyz:*
to achieve this. Does CloudSearch support such regular expressions?
推荐答案
您可以使用*运算符,在你的情况下,其将是XYZ查询字段中的非空值解析器为您查询CloudSearch。
You can query for non empty values in a field using * operator, in your case its going to be xyz:* This will only work if you are using Lucene parser for your query to CloudSearch.
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