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why cant we put a sequence generator or upd strategy
transformation before joiner transformation?
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Answer / bhupal
if you use the update strategy transformation before joiner in mapping, the mapping will be invalid because of data flow validation errors in mapping irrespective of operations you implemented in update strategy.
joiner transformation input should be from source qualifier transformation.
source---->sq--->seq--->
joiner---->trg
source---->sq---->
we cant create mapping like this because seq does't allows port to create and accept from other tr.
src--->sq--->
joiner--->trg
seq--->
we cant create like this. joiner inputs should be from source qualifier.
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