A method and apparatus converts an original query into a sequenced query that takes into account a range of values of a variable defined by a start and end point in performing the query. The start or end points are calculated if necessary and a query to collect all of the start and end points may be...http://www.google.es/patents/US6324535?utm_source=gb-gplus-sharePatente US6324535 - Method and apparatus for producing sequenced queries
Method and apparatus for producing sequenced queries