<script type="text/javascript">
<!--
document.write('<div id="oa_widget"></div>');
document.write('<script type="text/javascript" src="https://www.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=undefined&type=result"></script>');
-->
</script>

COPY SCRIPT

For further information contact us at helpdesk@openaire.eu

Gruppierungen in SQL

Name: Gruppierungen in SQL
Creator: Stephan Kleuker

descriptionPublicationkeyboard_double_arrow_right Part of book or chapter of book , Other literature type 01 Jan 2011Publisher:Springer Fachmedien Wiesbaden

Authors: Stephan Kleuker;

doi: 10.1007/978-3-658-01588-6_8 , 10.1007/978-3-658-12338-3_8 , 10.1007/978-3-8348-9925-5_8 , 10.1007/978-3-658-43023-8_8

Gruppierungen in SQL

- Summary
- Metrics

Abstract

Im vorherigen Kapitel wurden alle wichtigen Sprachkonstrukte von SQL zur einfachen Verknupfung von Tabellen vorgestellt. SQL-Anfragen bieten neben der reinen Tabellenverknupfung auch die Moglichkeit, Auswertungen fur einzelne Attribute oder fur mehrere Attribute durchzufuhren. Damit kann man z. B. in einer Anfrage herausfinden, wie oft verschiedene Attributswerte in einer Spalte vorkommen. Fur diesen Ansatz wird das SQL-Sprachkonstrukt GROUP BY genutzt, das Ihnen in diesem Kapitel genauer vorgestellt werden soll.

Related Organizations

Hochschule Osnabrück
Germany

Impact byBIP!

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	0
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Average
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Average
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average

Found an issue? Give us feedback

Average

Upload OA version

Are you the author? Do you have the OA version of this publication?

uploadUpload now!