[fpc-pascal] How to clear the value of a field in a table using parameters?

[Michael Van Canneyt]

On Thu, 29 Aug 2013, silvioprog wrote:

> 
> Other interesting feature is the property EmptyAsNull:
> 
> http://docwiki.embarcadero.com/VCL/XE/en/IBCustomDataSet.TIBStringField.EmptyAsNull
> 
> It tests if field (ftString) is empty (f = ''), if yes, it set the field value to null (f.Clear).

Apparently a IBX specific extension.

I don't see the value of this. empty and null are different things.

Michael.