492 search results - page 21 / 99 » Computing aggregations in database query languages |
ICDE
2006
IEEE
14 years 5 months ago
2006
IEEE
In this paper, we study SQL queries with aggregate subqueries that share common tables and conditions with the outer query. While several approaches can deal with such queries, th...
ISMB
1998
14 years 8 days ago
1998
Existing query interfaces for biological databases are either based on fixed forms or textual query languages. Users of a fixed form-based query interface are limited to performin...
ICDE
2006
IEEE
14 years 5 months ago
2006
IEEE
The growing sophistication and diversity of malicious activity in the Internet presents a serious challenge for network security analysts. In this paper, we describe our efforts t...
PODS
2008
ACM
14 years 11 months ago
2008
ACM
We study complexity and approximation of queries in an expressive query language for probabilistic databases. The language studied supports the compositional use of confidence com...
ICDT
2010
ACM
14 years 28 days ago
2010
ACM
When a query is evaluated under bag semantics, each answer is returned as many times as it has derivations. Bag semantics has long been recognized as important, especially when ag...