On Monday, May 2, 2011 3:53:47 PM UTC+2, Andreas Henningsson wrote:
> On Mon, May 2, 2011 at 3:43 PM, Noel Grandin <[email protected]> wrote:
> > Its not a schema change, it will only apply to result sets i.e. if a
> > computation in a select would result in an overflow, the result column
> > gets automatically promoted to the next larger numeric type.
> 
> that sounds more ok to me.

To me it does NOT. Nearly any computation may overflow, so the result of 
int+int should be long and long+long should be BigInteger? In general surely 
not. But then you have a result type depending not only on the type of 
included variables, but also an their actual values. Would you do this 
globally or on a per-row bases? The former is impractical, since you'd need 
to compute the whole ResultSet before returning anything. The latter is 
weird, weird, weird....

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