use of copystage and modify stage
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use of copystage and modify stage
can anyone explain what are the uses of copy stage and modify stage in what situation can we use?
thanks & regards
kk
kk
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Copy stage makes zero or more copies of its input. You may drop or rename columns, but not change the data in any other way.
Modify stage is a very fast stage for performing certain simple, single-argument functions on data. Vincent has posted a blog on how to become a Modify stage Zen master.
Modify stage is a very fast stage for performing certain simple, single-argument functions on data. Vincent has posted a blog on how to become a Modify stage Zen master.
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Any contribution to this forum is my own opinion and does not necessarily reflect any position that IBM may hold.
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And Andy Sorrell has a Modify Stage video tutorial which has some good syntax examples. Both stages are faster than the Transformer stage for specialised tasks but the Transformer is easier to use if you are doing multiple tasks in one step (constraints and transforms and copies).
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Blog: Tooling Around in the InfoSphere
Twitter: @vmcburney
LinkedIn:Vincent McBurney LinkedIn