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>>What are some of the drawbacks of using NULL's? When using 3rd party files & programs and 4GL's it seems that this is when you don't have much choice when comparing values between files for fields that may be empty/initialized for a process and can be a development nightmare assuming not all files follow the same standard of field definition of "Allows the null value" Simple query to compare results or CMPPFM is useless. So I guess the moral of the story to me is know your data, know what your acquiring and know how to compare them, anticipating desired result set.
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