4. More interesting searches
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## 4. More interesting searches

The OAI indexing example defines many different index names, a study of the `conf/oai2index.xsl` stylesheet reveals the following word type indexes (i.e. those with suffix `:w`):

         any:w
         title:w
         author:w
         subject-heading:w
         description:w
         contributor:w
         publisher:w
         language:w
         rights:w

By default, searches do access the `any:w` index, but we can direct searches to any access point by constructing the correct PQF query. For example, to search in titles only, we use http://localhost:9999/?version=1.1&operation=searchRetrieve&x-pquery=@attr 1=title the&startRecord=1&maximumRecords=1&recordSchema=dc

Similar we can direct searches to the other indexes defined. Or we can create boolean combinations of searches on different indexes. In this case we search for `the` in `title` and for `fish` in `description` using the query `@and @attr 1=title the @attr 1=description fish`. http://localhost:9999/?version=1.1&operation=searchRetrieve&x-pquery=@and @attr 1=title the @attr 1=description fish&startRecord=1&maximumRecords=1&recordSchema=dc

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