source table have 3 records? and it is sucessfully loaded
into target. and 4more records is added in to source .that
means 7 records now in source. we have to load the
remaining 4 records into the same trgt table with maintian
top 3 records. how ?can any one give me the data flow of
this logic plz?
Answer Posted / vinod
Use Update Strategy Transformation. Identity an unique
field or an unique combination which is the primary key.
Check the primary key field or combination field in Update
stratergy based on which the target is updated. If the key
from the source matches with the target key field, then
these rows not inserted into the target, else it gets
inserted
Correct me if I am wrong
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