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MCOL-4188 Fix regressions in CEIL()/CHAR() for narrow decimals.

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In addition, a regression in a WHERE clause with a WF field
as the LHS and an addition operation on two WF fields on the RHS
is also fixed. The issue was SimpleColumn::getDecimalVal() was
setting precision = 19, with the value of one of the operands of the
addition operation being set in VDecimal::value instead of
VDecimal::s128Value. addSubtractExecute() in mcs_decimal.cpp makes the
assumption that if precision > 18 and precision <= 38, we need to
fetch the wide s128Value, not the narrow value field. So we are
fixing the precision set in SimpleColumn::getDecimalVal().
This commit is contained in:
Gagan Goel
2020-11-09 18:45:22 -05:00
committed by Roman Nozdrin
parent 6fd7916c56
commit 007b8a5082
5 changed files with 44 additions and 36 deletions
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18
utils/funcexp/func_char.cpp
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@ -134,7 +134,7 @@ string Func_char::getStrVal(Row& row,
case execplan::CalpontSystemCatalog::DECIMAL:
case execplan::CalpontSystemCatalog::UDECIMAL:
{
IDB_Decimal d = parm[0]->data()->getDecimalVal(row, isNull);
IDB_Decimal d = rc->getDecimalVal(row, isNull);
if (ct.colWidth == datatypes::MAXDECIMALWIDTH)
{
@ -154,30 +154,16 @@ string Func_char::getStrVal(Row& row,
tmpval++;
value = datatypes::Decimal::getInt32FromWideDecimal(tmpval);
// WIP MCOL-641
/*if ( !getChar((int64_t)tmpval, buf) )
{
isNull = true;
return "";
}*/
}
else
{
double dscale = d.scale;
// get decimal and round up
int value = d.value / pow(10.0, dscale);
value = d.value / pow(10.0, dscale);
int lefto = (d.value - value * pow(10.0, dscale)) / pow(10.0, dscale - 1);
if ( lefto > 4 )
value++;
// WIP MCOL-641
/*if ( !getChar((int64_t)value, buf) )
{
isNull = true;
return "";
}*/
}
}
break;