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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
13.4 Loading and Transformation 373
Chapter 13
TRUNCATE truncates all rows first and will conflict with con-
straints. Truncation destroys all rows without the option to rollback.
APPEND adds to the end of files without removing existing data.
Loading Multiple Tables
Figure 13.8 clearly shows control file syntax for loading data into more than
one table at once, using a single input datafile.
Field Definitions
Field definitions in the control file can be defined using positioning or spe-
cific datatypes and size. The first example below splits data into separate
columns using positions on each line, assuming fixed-length records of
course:
LOAD DATA
INTO TABLE table1 ...
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Publisher Resources

ISBN: 9781555583354