Recursive queries in product databases - Bekke, Bakker - 2002 () Citation Context ...rsive queries (including parsing, execution andspresentation of the result) is within almost linearsprocessing time. This was already confirmed by extensivestests on small, medium and large databases =-=[4, 5...
ExpandTableColumn(#"Merged Queries", "ASSEMBLYDETAILWORKACTIVITY", {"OPERATIONTIME", "SETUPTIME"}, {"DETAILWORK.OPERATIONTIME", "DETAILWORK.SETUPTIME"}), // get the times // Group the rows back to the original records and sum the time fields from ASSEMBLYDETAILWORKACTIVITY #"Grouped Rows"...
Possibilities of SQL to express recursive queries in relational database systems are analyzed. Standard recursive query classes are considered. Recursive SQL was compared with Datalog-like logic query languages with the help of the parts explosion problem. DOI: http://dx.doi.org/ 被引量: 5 收...
6,7,8,9]. Even though specialised tools will outperform general-purpose solutions, we argue that an integration in database systems will simplify data provenance and its lineage, and allows complex queries as input. So far, machine learning pipelines inside of database...
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...
I have been playing around with some queries to find out the gaps. A couple of things to know in advance. The files are named using a timestamp (‘YYYYMMDDHH24MI’)The files are always 5 minutes apart from each other.Let’s first create a test table: 1 2 3 4 5 rem create the ...
“id” which is non-unique and part of my primary key. Inside each partition, rows with the same id are located close to each other which is done by dbms_redefinition reorg using orderby_cols. The intention is to reduce the amount of physical reads since there are no queries that don...
> Thanks in advance. >[/color] Queries: BOM, with Joe Celko Nested Sets http://www.mvps.org/access/queries/qry0023.htm Modules: Bill Of Materials http://www.mvps.org/access/modules/mdl0027.htm #4 Nov 13 '05, 09:55 AM Re: Recursive code to create indented bill of material ...
1. A method, implemented at least partly by a device, for facilitating execution of a database query of a database, wherein the database query requires multiple sub-queries to be executed as multiple iterations such that a result of a first one of the sub-queries is needed to be determi...
What I'm trying to do is return a recordset with the data in order so I can populate a HTML select object with it and have proper indentation. I've gotten it to work in a fairly ugly way using two queries. One where I get all the parentID=null. Then I print all of them and ...