Process Multiple Basic Test Search Queries Simultaneously
If basic text search queries are slow because multiple users are running queries at the same time, you can add more BTS virtual processors so that queries run simultaneously, each in their own virtual processor. Previously, you could only create one BTS virtual processor and queries ran serially.
Control the Results of a Fuzzy Search with the Basic Text Search DataBlade® module
You can now specify the degree of similarity of search results in fuzzy searches when using the Basic Text Search DataBlade module. Specify a number between 0 and 1, where a higher value results in a higher degree of similarity. To limit results, specify a higher number. To maximize results, specify a lower number. The default degree of similarity is 0.5.
Map Characters for Indexing with the Basic Text Search DataBlade module
You can now map characters in your data to other characters during indexing with the Basic Text Search DataBlade module. For example, you can specify that letters with diacritical marks are indexed as the same letters without marks. You can also standardize inconsistent prefixes or delete character strings from indexed text. To use character maps, include the canonical_maps parameter when you create your bts index.
Default Boolean Operator in Basic Text Search Queries
You can now change the default Boolean
operator between search terms in Basic Text Search queries from OR to AND by
using the query_default_operator parameter when you create a bts index. The default
operator is represented by a blank space between terms. Many popular end-user
search engines use AND as the default operator between search terms, where
end-users expect the search results to contain all their search terms.
Storage for Temporary Basic Text Search Files
You can now specify that temporary files used by the Basic Text Search DataBlade module are stored in a separate sbspace from the one used to store the bts index. Separating temporary files from the bts index might improve query performance.
Track Basic Text Search Query Trends
You can now track what queries are run against your bts index by including the query_log parameter when you create a bts index. You can use query trends information to provide hints to end-users on popular queries or work on optimizing the most popular queries.
Fragment bts Indexes by Expressions
You can now fragment bts indexes by expressions into multiple sbspaces instead of a single sbspace.
Basic Text Search DataBlade module Supports High-Availability Clusters
You can now use the Basic Text Search DataBlade module to perform searches on high-availability cluster servers by creating indexes in sbspaces. Previously, the Basic Text Search DataBlade module only supported the creation of indexes in extspaces, and thus could not participate in any queries on high-availability secondary servers and in backup and restore operations.
Querying XML Attributes with the Basic Text DataBlade module
The Basic Text Search DataBlade module now supports searches on XML attributes in a document repository. The new all_xmlattrs parameter enables searches on all attributes that are contained in the XML tags or paths in a column that contains an XML document.
Support added for a user-defined stopword list
You can create a customized stopword list for frequently occurring words in your data or you can use the default stopword list.
Support added for XML-structured documents
You can use Basic Text Search XML index parameters to manipulate searches of XML data in different ways.