Is there no issue when you try to convert a NOt null column in nullable and vi

Is there no issue when you try to convert a NOt null column
in nullable and vice versa in aggregator styage and
transformer stage? When I tried i got the warnings but in a
running code I can see such type of scenarios. Please
explain

Question Posted / neha garg

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Is there no issue when you try to convert a NOt null column in nullable and vice versa in aggregat..

Answer / subhash

1) there is no issue when you are converting NOT NULL column to NULLABLE column even if get null data from source.

2) But when you are converting nullable column to NOT nullable column also you will not get any issue if you get the NOT NULL data from source,
if you get nullable data from source then job will ABORT.

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Is there no issue when you try to convert a NOt null column in nullable and vice versa in aggregat..

Answer / shar

When
col is converted from not null to null and data coming has
null or not null values then NO Problem.

But col is NULL constraint and converted to Not NULL then
two cases
i) when data coming from source has no NULL values then no
problem.
ii)when data coming from source has NULL values then the job
simply ABORTS.

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