2 search results - page 1 / 1 » Automated Statistics Collection in DB2 UDB |
VLDB
2004
ACM
13 years 9 months ago
2004
ACM
The use of inaccurate or outdated database statistics by the query optimizer in a relational DBMS often results in a poor choice of query execution plans and hence unacceptably lo...
SIGMOD
2005
ACM
13 years 10 months ago
2005
ACM
If presented with inaccurate statistics, even the most sophisticated query optimizers make mistakes. They may wrongly estimate the output cardinality of a certain operation and th...