Abstract: The method may include providing a plurality of synopsis techniques for determining a plurality of attribute value information indicative of the at least one attribute. The method may include determining a data characteristic describing the plurality of data rows of the current data block. The method may include selecting, based on the determined data characteristic, at least one synopsis technique of the provided plurality of synopsis techniques suitable for generating the plurality of attribute value information for the at least one attribute of the current data block. The method may include determining the plurality of attribute value information for the at least one attribute of the plurality of data rows of the current data block using the at least one selected synopsis technique. The method may include storing the determined plurality of attribute value information for the current data block to be used for query processing against the data table.
Type:
Grant
Filed:
February 15, 2019
Date of Patent:
February 9, 2021
Assignee:
International Business Machines Corporation
Inventors:
Felix O. Beier, Thomas F. Boehme, Andreas Brodt, Oliver Schiller