Table of Contents??? Union, Intersection, Difference Example Example (II) Bag Semantics of SQL Bag Union Bag Intersection Bag Difference Laws for Bags Differ From Laws for Sets Example Forcing Set/Bag Semantics Forcing Set/Bag Semantics (II) Example Aggregations Example Eliminating Duplicates Before Aggregation Grouping Example Example Restriction on SELECT Lists With Aggregation Example Problem HAVING clauses Example Example (II) DB Modifications Example Insertion of the Result of a Query Example Example (II) Example (III) Deletion Example Example Example Semantics is tricky. Semantics is tricky.(II) Updates Example Example |
Author: Gary L. Burt
Email: burt@umbc Home Page: www.cs.umbc.edu/~burt |