We have a table with a CHARACTER data type field. We apply a “>” row comparison between this field and another CHARACTER field in another table. What will be the results for records with field value of NULL

This is something  so many asked me because I also faced the same situation before, so having a NULL in a row when compared will give an UNKNOWN result.

The result will not be correct hence creates an ambiguity.

Reference : Dilip Kumar Jena ( https://sqlexplore.wordpress.com)

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2 thoughts on “We have a table with a CHARACTER data type field. We apply a “>” row comparison between this field and another CHARACTER field in another table. What will be the results for records with field value of NULL

  1. I’d have to check with you one this subject. Which is not something I typically do! I really like reading a post that will make people think. Also, thanks for allowing me to comment!

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