SolrQuery::setGroupTruncate

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• SolrQuery::setGroup() - Enable/Disable result grouping (group parameter)
• SolrQuery::addGroupField() - Add a field to be used to group results
• SolrQuery::addGroupFunction() - Allows grouping results based on the unique values of a function query (group.func parameter)
• SolrQuery::addGroupQuery() - Allows grouping of documents that match the given query
• SolrQuery::addGroupSortField() - Add a group sort field (group.sort parameter)
• SolrQuery::setGroupFacet() - Sets group.facet parameter
• SolrQuery::setGroupOffset() - Sets the group.offset parameter
• SolrQuery::setGroupLimit() - Specifies the number of results to return for each group. The server default value is 1
• SolrQuery::setGroupMain() - If true, the result of the first field grouping command is used as the main result list in the response, using group.format=simple
• SolrQuery::setGroupNGroups() - If true, Solr includes the number of groups that have matched the query in the results
• SolrQuery::setGroupFormat() - Sets the group format, result structure (group.format parameter)
• SolrQuery::setGroupCachePercent() - Enables caching for result grouping