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MCOL-4171

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This commit is contained in:
David Hall
2020-07-30 17:28:11 -05:00
committed by Roman Nozdrin
parent 5287e6860b
commit 638202417f
40 changed files with 807 additions and 250 deletions
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42
utils/windowfunction/wf_stats.cpp
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@ -55,7 +55,7 @@ namespace windowfunction
template<typename T>
boost::shared_ptr<WindowFunctionType> WF_stats<T>::makeFunction(int id, const string& name, int ct)
boost::shared_ptr<WindowFunctionType> WF_stats<T>::makeFunction(int id, const string& name, int ct, WindowFunctionColumn* wc)
{
boost::shared_ptr<WindowFunctionType> func;
@ -66,7 +66,6 @@ boost::shared_ptr<WindowFunctionType> WF_stats<T>::makeFunction(int id, const st
case CalpontSystemCatalog::MEDINT:
case CalpontSystemCatalog::INT:
case CalpontSystemCatalog::BIGINT:
case CalpontSystemCatalog::DECIMAL:
{
func.reset(new WF_stats<int64_t>(id, name));
break;
@ -77,12 +76,37 @@ boost::shared_ptr<WindowFunctionType> WF_stats<T>::makeFunction(int id, const st
case CalpontSystemCatalog::UMEDINT:
case CalpontSystemCatalog::UINT:
case CalpontSystemCatalog::UBIGINT:
case CalpontSystemCatalog::UDECIMAL:
{
func.reset(new WF_stats<uint64_t>(id, name));
break;
}
case CalpontSystemCatalog::DECIMAL:
{
if (wc->functionParms()[0]->resultType().colWidth < 16)
{
func.reset(new WF_stats<int64_t>(id, name));
}
else
{
func.reset(new WF_stats<int128_t>(id, name));
}
break;
}
case CalpontSystemCatalog::UDECIMAL:
{
if (wc->functionParms()[0]->resultType().colWidth < 16)
{
func.reset(new WF_stats<uint64_t>(id, name));
}
else
{
func.reset(new WF_stats<uint128_t>(id, name));
}
break;
}
case CalpontSystemCatalog::DOUBLE:
case CalpontSystemCatalog::UDOUBLE:
{
@ -177,17 +201,19 @@ void WF_stats<T>::operator()(int64_t b, int64_t e, int64_t c)
{
int scale = fRow.getScale(colIn);
long double factor = pow(10.0, scale);
long double ldSum1 = fSum1;
long double ldSum2 = fSum2;
// adjust the scale if necessary
if (scale != 0 &&
cdt != CalpontSystemCatalog::LONGDOUBLE)
{
fSum1 /= factor;
fSum2 /= factor * factor;
ldSum1 /= factor;
ldSum2 /= factor * factor;
}
long double stat = fSum1 * fSum1 / fCount;
stat = fSum2 - stat;
long double stat = ldSum1 * ldSum1 / fCount;
stat = ldSum2 - stat;
if (fFunctionId == WF__STDDEV_POP)
stat = sqrt(stat / fCount);
@ -220,7 +246,7 @@ void WF_stats<T>::operator()(int64_t b, int64_t e, int64_t c)
template
boost::shared_ptr<WindowFunctionType> WF_stats<int64_t>::makeFunction(int, const string&, int);
boost::shared_ptr<WindowFunctionType> WF_stats<int64_t>::makeFunction(int, const string&, int, WindowFunctionColumn*);
} //namespace