On Wed, 2003-10-01 at 11:32, Daniel Schuchardt wrote:
> Read the docs...
>
> Hm looking towards the doks thats the right behavoir. Also from the
> logical point thats the right behavoir. But I don't like it. The CAST
> should return an empty string in that case (looking from the practical
> standpoint).
All CAST is doing is changing the type of the datum; it does not change
its value except perhaps as a side effect. A null string is not the
same as an empty string. I don't at all see why you should expect
anything different, especially when the COALESCE() function is already
provided to do exactly what you want.
--
Oliver Elphick Oliver.Elphick@lfix.co.uk
Isle of Wight, UK http://www.lfix.co.uk/oliver
GPG: 1024D/3E1D0C1C: CA12 09E0 E8D5 8870 5839 932A 614D 4C34 3E1D 0C1C
========================================
"Yet if any man suffer as a Christian, let him not be
ashamed; but let him glorify God on this behalf."
I Peter 4:16