Alberto Dell'Era's Oracle blog » CBO http://www.adellera.it/blog A blog about Oracle - Un blog riguardo Oracle Sun, 01 May 2011 15:41:38 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 CBO: NewDensity for Frequency Histograms,11g-10.2.0.4 (densities part IV) http://www.adellera.it/blog/2009/10/23/cbo-newdensity-for-frequency-histograms11g-10204-densities-part-iv/ http://www.adellera.it/blog/2009/10/23/cbo-newdensity-for-frequency-histograms11g-10204-densities-part-iv/#comments Fri, 23 Oct 2009 16:07:04 +0000 Alberto Dell'Era http://www.adellera.it/blog/?p=352 http://www.adellera.it/blog/2009/10/23/cbo-newdensity-for-frequency-histograms11g-10204-densities-part-iv/feed/ 5 CBO: “NewDensity” replaces “density” in 11g, 10.2.0.4 (densities part III) http://www.adellera.it/blog/2009/10/16/cbo-newdensity-replaces-density-in-11g-10204-densities-part-iii/ http://www.adellera.it/blog/2009/10/16/cbo-newdensity-replaces-density-in-11g-10204-densities-part-iii/#comments Fri, 16 Oct 2009 20:33:46 +0000 Alberto Dell'Era http://www.adellera.it/blog/?p=345 http://www.adellera.it/blog/2009/10/16/cbo-newdensity-replaces-density-in-11g-10204-densities-part-iii/feed/ 5 CBO: the formula for the “density” column statistic (densities part II) http://www.adellera.it/blog/2009/10/10/cbo-the-formula-for-the-density-column-statistic-densities-part-ii/ http://www.adellera.it/blog/2009/10/10/cbo-the-formula-for-the-density-column-statistic-densities-part-ii/#comments Sat, 10 Oct 2009 13:56:03 +0000 Alberto Dell'Era http://www.adellera.it/blog/?p=339 http://www.adellera.it/blog/2009/10/10/cbo-the-formula-for-the-density-column-statistic-densities-part-ii/feed/ 6 CBO: about the statistical definition of “cardinality” (densities part I) http://www.adellera.it/blog/2009/10/03/cbo-about-the-statistical-definition-of-cardinality-densities-part-i/ http://www.adellera.it/blog/2009/10/03/cbo-about-the-statistical-definition-of-cardinality-densities-part-i/#comments Sat, 03 Oct 2009 10:32:24 +0000 Alberto Dell'Era http://www.adellera.it/blog/?p=334 http://www.adellera.it/blog/2009/10/03/cbo-about-the-statistical-definition-of-cardinality-densities-part-i/feed/ 3 CBO: the “non-empty result set” assumption http://www.adellera.it/blog/2009/09/03/cbo-the-non-empty-result-set-assumption/ http://www.adellera.it/blog/2009/09/03/cbo-the-non-empty-result-set-assumption/#comments Thu, 03 Sep 2009 13:14:58 +0000 Alberto Dell'Era http://www.adellera.it/blog/?p=322 http://www.adellera.it/blog/2009/09/03/cbo-the-non-empty-result-set-assumption/feed/ 6