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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
72 3.2 Star Queries and Star Query Transformations
CREATE BITMAP INDEX xbj_sale_2
ON sale(time.time_id)
FROM sale, time
WHERE sale.time_id = time.time_id
NOLOGGING COMPUTE STATISTICS TABLESPACE indx;
DROP INDEX xbj_sale_3;
CREATE BITMAP INDEX xbj_sale_3
ON sale(product.product_id)
FROM sale, product
WHERE sale.product_id = product.product_id
NOLOGGING COMPUTE STATISTICS TABLESPACE indx;
DROP INDEX xbj_sale_4;
CREATE BITMAP INDEX xbj_sale_4
ON sale(industry.industry_id)
FROM sale, industry
WHERE sale.industry_id = industry.industry_id
NOLOGGING COMPUTE STATISTICS TABLESPACE indx;
Using four single column bitmap indexes for the bitmap join produces
the same result ...
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Publisher Resources

ISBN: 9781555583354