Sample stage is yet another development stage. It can have a single input link and any number of output links when operating in percent mode and have one o/p link when operating in period mode.
Showing posts with label sample. Show all posts
Showing posts with label sample. Show all posts
Thursday, January 02, 2014
Sample Stage in DataStage
Sample stage is yet another development stage. It can have a single input link and any number of output links when operating in percent mode and have one o/p link when operating in period mode.
Monday, July 02, 2012
Development/Debug Stage in DataStage
Head
stage
The Head Stage is a
Development/Debug stage. It can have a single input link and a single output
link.
It is one of a number
of stages that InfoSphere DataStage provides to help you sample data
The Head Stage selects
the first N rows from each partition of an input data set and copies the
selected
rows to an output data
set. You determine which rows are copied by setting properties which allow you
to specify:
·
The number of rows to copy
·
The partition from which the rows are copied
·
The location of the rows to copy
·
The number of rows to skip before the copying
operation begins
This stage is helpful
in testing and debugging applications with large data sets. For example, the
Partition
property lets you see
data from a single partition to determine if the data is being partitioned as
you
want it to be. The Skip
property lets you access a certain portion of a data set.
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