Skip to Main Content
Oracle Data Warehouse Tuning for 10g
book

Oracle Data Warehouse Tuning for 10g

by Gavin JT Powell
April 2011
Intermediate to advanced content levelIntermediate to advanced
504 pages
16h 49m
English
Digital Press
Content preview from Oracle Data Warehouse Tuning for 10g
10.4 Performance and the MODEL Clause 313
Chapter 10
10.4.2 Understanding MODEL Clause Query Plans
An Oracle SQL MODEL clause query is accessed as ORDERED,
CYCLIC, or ACYCLIC. Any of the three aforementioned options can be
accessed as FAST. The different access methods are used by the optimizer in
generating a query plan, depending on the structure of the MODEL clause
RULES clause.
Figure 10.32 shows an example of an ORDERED FAST MODEL
clause query where expressions on both sides of the rules are all simple cell
expressions.
Figure 10.33 shows an example of an ORDERED MODEL clause
query where expressions in the rules have multiple cell references and not ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Oracle 10g Data Warehousing

Oracle 10g Data Warehousing

Lilian Hobbs, Susan Hillson, Shilpa Lawande, Pete Smith
Expert Oracle Enterprise Manager 12c

Expert Oracle Enterprise Manager 12c

Kellyn Pot'vin, Anand Akela, Gokhan Atil, Bobby Curtis, Alex Gorbachev, Niall Litchfield, Leighton Nelson, Pete Sharman

Publisher Resources

ISBN: 9781555583354