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Editorial Team
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Asked: 2026-06-08T15:37:19+00:00

I am new to Access reports and forms. Yes I hate admitting it. I

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I am new to Access reports and forms. Yes I hate admitting it. I am familiar with the database part but not with reports and forms.

I have come across this peculiar expression in Access expression builder which i cant deconstruct

=IIf(([value1] & “”=””) Or ([value2] & “”=””),””,[value3])

Please understand that I have sufficient experience with Crystal Reports and i understand what an iif statement is .

But I have not come across anything like this

  1. What exactly does & “”=”” do?
  2. Is this some sort of regular expression in Access?
  3. Can you help me by providing links so that I can read up on this in depth?

Thanks a ton in advance
Cheers!

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1 Answer

  1. Editorial Team

    It is appending an empty string to the value to avoid Null.

    You could say it this way:

    Value Is Null Or Value = ""

    Further explanation re comment

    Let us say Value1 is Null

    Value1 is not equal to ""

    However

    Value1 & "" is equal to ""

    Let us say Value1 = “”

    Value1 is not equal to Null

    However

    Value1 & "" is equal to ""

    Let us say Value1 = “abc”

    Value1 & "" is equal to "abc"
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