"Peter Eisentraut" <peter_e@gmx.net> writes:
> The clarity stems from the fact that this is the variant that doesn't
> lose data whereas the other one does.
I think double has a wider range. So you get a choice between losing precision
or not being able to store all values.
> The expression I originally posted works on Oracle. I wonder how they
> do it.
I think they only have one type which uses different storage formats depending
on the data.
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