简体繁体 English

按solr中多值字段的特定值排序

[英]sorting by specific value of multivalued field in solr

原文 2011-08-20 04:55:06 9 1 lucene/ solr

I Have a Solr index that stores dates in a multivalued field for each document. 我有一个Solr索引，该索引将日期存储在每个文档的多值字段中。

I need to have the ability to search for a date range (done that), but also sort the result set by date where the date is the first date of the multivalued field that falls within the range. 我需要具有搜索日期范围（完成该操作）的功能，还需要按日期对结果集进行排序，其中日期是该范围内多值字段的第一个日期。

If I try to use a function for sorting it will tell me that it can not use the Field Caceh on multivalued fields. 如果我尝试使用函数进行排序，它将告诉我不能对多值字段使用Field Caceh。

Is it possible to maybe have a function fill a field on the query and then sort by that, or another option, or would the only option be to use a join, order by the join and then field collapse. 是否可以有一个函数填充查询中的一个字段，然后按该字段或另一个选项进行排序，或者唯一的选择是使用联接，按联接排序，然后字段折叠。

I really can't use SQL due to the complexity of the search and the number of joins, so was hoping there was a way I could complete this without falling back to SQL-like paradigms. 由于搜索的复杂性和联接的数量，我真的不能使用SQL，因此希望有一种方法可以完成此过程而又不退回到类似SQL的范式。

1 个解决方案

You can try to add multiple documents to the index, each with a single value for the document. 您可以尝试将多个文档添加到索引，每个文档都有一个单独的值。 Then, sort by the date and group by the docid. 然后，排序的日期和组由docID的。