InformationWeek. com News, analysis and research for business technology professionals, plus peertopeer knowledge sharing. Engage with our community. Have you looked at PQ83262 Rich Gugel State of Wisconsin Department of Administration DB2 Systems Programmer. Gives a comparison of various database management systems, including features, query syntax, functions and operators. En la mayora de aplicaciones existirn, para cada tabla, una serie de rutinas con los diferentes tipos de accesos consulta, lista, alta, modificacin y baja. Querying Historical Data in IBM DB2 CIS DBMS Using Recursive SQL T. Y. Cliff Leung IBM Santa Teresa Lab. San Jose, CA 95141, USA Hamid Pirahesh. IC-OPC-04.png' alt='Db2 Update Set Case When Then Else End' title='Db2 Update Set Case When Then Else End' />Querying Historical Data in IBM DB2 CS DBMS Using Recursive SQLMany applications handle time varying data. In this paper, we discuss how existing features of IBM DB2 for IX Version 2 can be used to support this type of applications efficiently, in terms of both storage and query evaluation. We discuss several temporal data models, the tradeoffs among these models, and how one can formulate so called as of or time slice queries in these models. We also show how time coalesce operation can be expressed directly in SQL. In all these features, the recursive SQL capability supported by DB2 plays a crucial role. While DB2 lacks many temporal features proposed in the literature, we show to what extent existing features of a commercial DBMS, such as DB2, can be used to provide some advanced supports for time varying data. Db2 Update Set Case When Then Else End' title='Db2 Update Set Case When Then Else End' />I am geting some crazy results on my stored procedure I created, cannot seem to get the sytax correct for if a record exists on 2 columns then do an update else insert. Report Viewer Export Pdf Margin there. Hi, SQL Server has the MERGE statement and some people advise to use it instead of IF EXISTS with INSERT UPDATE. Is it worth upgrading from IF EXISTS. MERGE SparxSystems presents the newes version of his UML software modeling tool Enterprise Architect.