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General Training Discussion General chat and comment on KnowledgeKube training
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andrew.matthews - (20/10/2016 09:27:59)
RE:Comparing NULL value and empty value in filter
Hi Arun, You will need to use the Filter Operator Is Blank, this will return all the rows where the selected field is NULL. If you're using this with a search box setup you may want to use a Filter Expression Attribute to switch between the Is Blank filter and your Search Filter depending on whether the search box has been filled in. A Filter Expression Attribute works in a similar way to a Visibility Expression Attribute, but the result of the expression should be the Filter Name for the filter you wish to use. If you have any other questions about this, don't hesitate to ask :) Andy
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