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MCOL-641 Add support for functions (Part 1).

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This commit is contained in:
Gagan Goel
2020-04-19 23:27:43 -04:00
committed by Roman Nozdrin
parent 554c6da8e8
commit cfe35b5c7f
28 changed files with 2102 additions and 462 deletions
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37
utils/funcexp/func_elt.cpp
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@ -73,15 +73,38 @@ string Func_elt::getStrVal(rowgroup::Row& row,
case CalpontSystemCatalog::DECIMAL:
{
IDB_Decimal d = parm[0]->data()->getDecimalVal(row, isNull);
double dscale = d.scale;
number = d.value / pow(10.0, dscale);
int lefto = (d.value - number * pow(10.0, dscale)) / pow(10.0, dscale - 1);
if ( utils::is_nonnegative(number) && lefto > 4 )
number++;
if (parm[0]->data()->resultType().colWidth == datatypes::MAXDECIMALWIDTH)
{
int128_t scaleDivisor, scaleDivisor2;
if ( utils::is_negative(number) && lefto < -4 )
number--;
datatypes::getScaleDivisor(scaleDivisor, d.scale);
scaleDivisor2 = (scaleDivisor <= 10) ? 1 : (scaleDivisor / 10);
int128_t tmpval = d.s128Value / scaleDivisor;
int128_t lefto = (d.s128Value - tmpval * scaleDivisor) / scaleDivisor2;
if (utils::is_nonnegative(tmpval) >= 0 && lefto > 4)
tmpval++;
if (utils::is_negative(tmpval) < 0 && lefto < -4)
tmpval--;
number = datatypes::Decimal::getInt64FromWideDecimal(tmpval);
}
else
{
double dscale = d.scale;
number = d.value / pow(10.0, dscale);
int lefto = (d.value - number * pow(10.0, dscale)) / pow(10.0, dscale - 1);
if ( utils::is_nonnegative(number) && lefto > 4 )
number++;
if ( utils::is_negative(number) && lefto < -4 )
number--;
}
break;
}