I'm trying to do an update with ELT of one column but it depends of the where clause, otherwise the column should remain the original. however using the following talend returns NULL for all the not matching rows and returns the updated value for the matching rows.
Solved! Go to Solution.
the problem is that the entire column gets new values, the updated value if there is a match and otherwise NULL, it should be updated value if there is a match, otherwise keep original data
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