189 search results - page 8 / 38 » Translating and Optimizing SQL Queries Having Aggregates |
VLDB
1998
ACM
13 years 11 months ago
1998
ACM
In a recent paper, we proposed adding a STOP AFTER clause to SQL to permit the cardinality of a query result to be explicitly limited by query writers and query tools. We demonstr...
ICDE
2010
IEEE
14 years 2 months ago
2010
IEEE
— To cope with bursty arrivals of high-volume data, a DSMS has to shed load while minimizing the degradation of Quality of Service (QoS). In this paper, we show that this problem...
SIGMOD
2010
ACM
14 years 11 days ago
2010
ACM
In this paper, we propose an online aggregation system called COSMOS (Continuous Sampling for Multiple queries in an Online aggregation System), to process multiple aggregate quer...
SIGMOD
2008
ACM
14 years 7 months ago
2008
ACM
Today's enterprise databases are large and complex, often relating hundreds of entities. Enabling ordinary users to query such databases and derive value from them has been o...
DBPL
1995
Springer
13 years 11 months ago
1995
Springer
We study the problem of maintaining recursively-de ned views, such as the transitive closure of a relation, in traditional relational languages that do not have recursion mechanis...