| C. Red Brick Systems, Los Gatos. RISQL Reference Guide, Red Brick Warehouse VPT Version 3. 1994. |
....represent measurements similar to those described above. 6. Conclusions Many authors have argued in the past that SQL has to be extended in order to handle complex decision support queries adequately [14] Few commercial systems offer SQL extensions to express complex aggregate queries easily[16]. Furthermore, query optimization of ad hoc data analysis has been given very little attention in the database research literature. We try to address all these issues. In this paper we discuss a class of data analysis queries called extended multi feature queries. This class contains many useful, ....
C. Red Brick Systems, Los Gatos. RISQL Reference Guide, Red Brick Warehouse VPT Version 3. 1994.
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