> Cfqueryparam allows to to specify that NULL values are 
> allowed anyway, so you don't need to do that check.

Can you explain what you mean?  ColdFusion has no concept of null.  The
NULL attribute, if set to 'YES' means that CFQUERYPARAM ignores the
value in the VALUE attribute and passed the database a null.  I've got
loads of situations where I need that functionality that I could not
achieve without the NULL attribute.

The example given is that if a form field has no value, a null requires
to be inserted, not an empty string.  These are not the same thing.

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