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On saying “Enough already!” in SQL
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Source International Conference on Management of Data archive
Proceedings of the 1997 ACM SIGMOD international conference on Management of data table of contents
Tucson, Arizona, United States
Pages: 219 - 230  
Year of Publication: 1997
ISBN:0-89791-911-4
Also published in ...
Authors
Michael J. Carey  IBM Almaden Research Center, San Jose, CA
Donald Kossmann  University of Passau, 94030 Passau, Germany and IBM Almaden Research Center, San Jose, CA
Sponsor
SIGMOD: ACM Special Interest Group on Management of Data
Publisher
ACM  New York, NY, USA
Bibliometrics
Downloads (6 Weeks): 23,   Downloads (12 Months): 75,   Citation Count: 78
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ABSTRACT

In this paper, we study a simple SQL extension that enables query writers to explicitly limit the cardinality of a query result. We examine its impact on the query optimization and run-time execution components of a relational DBMS, presenting two approaches—a Conservative approach and an Aggressive approach—to exploiting cardinality limits in relational query plans. Results obtained from an empirical study conducted using DB2 demonstrate the benefits of the SQL extension and illustrate the tradeoffs between our two approaches to implementing it.


REFERENCES

Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

 
A+92
E. Armstrong, et al. ORACLE7 server- application developer's guide, Oracle Corporation, 1992.
BM96
 
C+95
CG96
 
CS94
Fag96
GD87
G+92
 
IBM95
IBM Corporation. DB2 application programming guide for common servers (version 2), 1995.
 
Knu73
KS95
Loh88
 
MS93
S+79
S+96
 
Sto96
 
WA91

CITED BY  78

Collaborative Colleagues:
Michael J. Carey: colleagues
Donald Kossmann: colleagues