NULL values in the numeric columns in flat files

Some of my sources are flat files that sometimes have NULL values mixed with numbers in numeric columns that are part of the key. Of course causing incompatibilities over the insertion/development integration process to date. Which, if any, is the best way to 'ODI' to change NULL values to zeroes before the integration process?

Thank you!

Its hard to create constraints or checks on the models of flat file.
Thus, the way that we do, load us the flat files to the raw tables that look 100% like flat files and then perform these transformations or checks on them.
After that, they are loaded on the target system.

Tags: Business Intelligence

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