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Zero Length
By Richard Rost   Richard Rost on Twitter Richard Rost on LinkedIn Email Richard Rost   4 months ago

The Difference Between Null & Zero Length String

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In this Microsoft Access video, we're going to learn about Zero Length Strings, the Allow Zero Length property, how a ZLS is different from a Null value, how to set all of this up in our database, and most importantly how to use them each properly.

Simon from Cleveland, Ohio (a Platinum Member) asks: I'm confused. What's the difference between a Null value and a Zero Length String?


Members will learn how to use the format property to display "NULL" or (None) and in color. We'll learn about a problem with DLookup and how it doesn't work properly with zero length strings. I'll share my DLookupZLS function which does work with ZLS. We'll see how short & long text fields handle ZLS differently. We'll learn about different combinations of the Allow Zero Length and Required properties. And we'll learn about two more possible values: Empty and Nothing. This Extended Cut is jam packed with goodies, folks.

Silver Members and up get access to view Extended Cut videos, when available. Gold Members can download the database template from class plus get access to the Code Vault. If you signed up on YouTube you have to register on my YouTube Find User page so I can set up your account here on my web site. If you're not a member, Join Today!



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Keywords: TechHelp Access difference between null and empty string, allow zero length, DLookupZLS, DLookup with Zero Length String, ZLS, null string, format, does null = null, what does null equal, empty, nothing, required, variant  PermaLink  Zero Length Strings in Microsoft Access