Abstract: Embodiments of the invention provide techniques for generating summaries for query results based on field definitions. The summaries are generated automatically according to specifications in the field definitions of the fields included in the query results. Each result field may include one or more summaries that are designed to summarize the type of data of the particular field.

Abstract: System and computer program product for processing a text search query in a collection of documents. A full posting index is generated that has first index terms and a full posting list for each first index term, enumerating occurrences of the first index terms in the documents of the collection. A text search query includes search conditions search terms. The search conditions are translated into conditions on the first index terms to provide translated conditions. At least one short posting index is generated, which includes second index terms and a short posting list for each second index term, enumerating documents in which the second index terms occur. Filter conditions and complementary conditions are generated to represent the translated conditions. The filter conditions approximate the translated conditions, and are processed using the short posting index. The complementary conditions are processed using the full posting index to provide a query result.