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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
8.3 GROUP BY Clause Extensions and Materialized Views 235
Chapter 8
GROUP_ID()
Figure 8.21 shows a 1 for the GROUP_ID function for each of the city
totals for both New York and Los Angeles.
8.3 GROUP BY Clause Extensions and
Materialized Views
ROLLUP and CUBE SQL clauses can benefit materialized views, such that
multiple nested layers of materialized views do not have to be created for
Figure 8.19
Bit vector
concatenations and
GROUPING_ID
function results.
Figure 8.20
GROUPING and
GROUPING_ID
function results.
236 8.3 GROUP BY Clause Extensions and Materialized ...
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Publisher Resources

ISBN: 9781555583354