On Sun, Feb 21, 2010 at 08:41:08AM +0000, Martin Kersten wrote:
> Update of /cvsroot/monetdb/MonetDB5/src/modules/kernel
> In directory sfp-cvsdas-1.v30.ch3.sourceforge.com:/tmp/cvs-serv5630
>
> Modified Files:
> Tag: Feb2010
> calc.mx
> Log Message:
> The semantics assumed overflow to produce nil-values, not an exception.
Is this in line with SQL semantic (requirements)?
AFAIK, SQL standard requires to report under-/overflows during casts as
execption/errors.
Moreover, our SQL compiler/front-end cannot (easily) destinguish between
NULL (NIL) values that have been in the input and NULL (NIL) values that are
added to the result of a cast to indicate under-/overflows.
This might have been the reason why this execption was added by Niels ...
Just my €0.02 (or less)
Stefan
>
> Index: calc.mx
> ===================================================================
> RCS file: /cvsroot/monetdb/MonetDB5/src/modules/kernel/calc.mx,v
> retrieving revision 1.96
> retrieving revision 1.96.2.1
> diff -u -d -r1.96 -r1.96.2.1
> --- calc.mx 10 Jan 2010 15:30:59 -0000 1.96
> +++ calc.mx 21 Feb 2010 08:41:02 -0000 1.96.2.1
> @@ -1273,8 +1273,10 @@
> {
> if (*a == @2_nil @3) {
> *res= @1_nil;
> +/* obey semantics above, don't check for information loss
> if (*a != @2_nil)
> throw(MAL, "ca...@1", ARGUMENT_TOO_LARGE);
> +*/
> } else {
> *res= @4;
> }
>
>
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| Dr. Stefan Manegold | mailto:[email protected] |
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Try the new software tools for yourself. Speed compiling, find bugs
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