Re: Is there any way to check for a field with nothing in it?

From: The Natural Philosopher <tnp_at_invalid.invalid>
Date: Fri, 29 Jul 2016 16:41:45 +0100
Message-ID: <nnftfq$r18$>

On 29/07/16 15:25, wrote:
> If I insert a new line, and put nothing into a particular field, what is its value?
Depends if you have set a default value.

Is that what NULL is?

It may well end up NULL if that is the default.

  (like, there's simply 0 bytes allocated for its space?)


> How does one check for a NULL field,


[Quoted] [Quoted]   or ALL NULL fields in a particular line in a table?

I'll leave that for you to work out.

> Thanks.

Gun Control: The law that ensures that only criminals have guns.
Received on Fri Jul 29 2016 - 17:41:45 CEST

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