Advantage of using Build-op over tranformer or any stage
Posted: Tue Jul 31, 2007 9:32 pm
Hi
This is a bit open-ended question.
In one of the jobs i am developing I used build-op instead of transformer for column level tranformation. Although I didn't have much data but in future it is more likely that i will get huge amount data for the particular job.
I was just thinking, is there any advantage over using build-op over transformer for 1 or 2 column level transformation. ( in my job it was actually used for a range lookup, i used Join stage [left outer join] and build op (check min max between condtion) to solve the purpose). As far as I know using transformer it creates a separate child process and separate object code. Does it happens with build-op too?
Also i usually prefer using join/merge stage over lookup, and transformer stage? Does build-op gives any advantage w.r.t performance over here apart from the simplicity of the code? Anything else you can think of please let me know w.r.t. advantages please let me know.
Thanks,
M
This is a bit open-ended question.
In one of the jobs i am developing I used build-op instead of transformer for column level tranformation. Although I didn't have much data but in future it is more likely that i will get huge amount data for the particular job.
I was just thinking, is there any advantage over using build-op over transformer for 1 or 2 column level transformation. ( in my job it was actually used for a range lookup, i used Join stage [left outer join] and build op (check min max between condtion) to solve the purpose). As far as I know using transformer it creates a separate child process and separate object code. Does it happens with build-op too?
Also i usually prefer using join/merge stage over lookup, and transformer stage? Does build-op gives any advantage w.r.t performance over here apart from the simplicity of the code? Anything else you can think of please let me know w.r.t. advantages please let me know.
Thanks,
M