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MCOL-4171 Window functions with decimal(38)

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This commit is contained in:
David Hall
2020-08-10 13:59:49 -05:00
committed by Roman Nozdrin
parent 62c1c1e0e2
commit c4d8516a47
4 changed files with 97 additions and 62 deletions
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59
utils/windowfunction/windowfunctiontype.cpp
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@ -40,7 +40,6 @@ using namespace logging;
using namespace ordering;
#include "calpontsystemcatalog.h"
#include "dataconvert.h" // int64_t IDB_pow[19]
using namespace execplan;
#include "windowfunctionstep.h"
@ -59,6 +58,7 @@ using namespace joblist;
#include "wf_stats.h"
#include "wf_sum_avg.h"
#include "wf_udaf.h"
#include "mcs_decimal.h"
namespace windowfunction
{
@ -480,7 +480,7 @@ template<typename T>
void WindowFunctionType::implicit2T(uint64_t i, T& t, int s)
{
int ct = fRow.getColType(i);
int pw = 0;
int64_t divisor = 1;
switch (ct)
{
@ -491,13 +491,6 @@ void WindowFunctionType::implicit2T(uint64_t i, T& t, int s)
case CalpontSystemCatalog::BIGINT:
{
t = (T) fRow.getIntField(i);
pw = s - fRow.getScale(i); // pw is difference of scales, will be in [-18, 18]
if (pw > 0)
t *= IDB_pow[pw];
else if (pw < 0)
t /= IDB_pow[-pw];
break;
}
@ -508,13 +501,6 @@ void WindowFunctionType::implicit2T(uint64_t i, T& t, int s)
case CalpontSystemCatalog::UBIGINT:
{
t = (T) fRow.getUintField(i);
pw = s - fRow.getScale(i); // pw is difference of scales, will be in [-18, 18]
if (pw > 0)
t *= IDB_pow[pw];
else if (pw < 0)
t /= IDB_pow[-pw];
break;
}
@ -525,13 +511,6 @@ void WindowFunctionType::implicit2T(uint64_t i, T& t, int s)
t = (T) fRow.getIntField(i);
else
t = (T) fRow.getInt128Field(i);
pw = s - fRow.getScale(i); // pw is difference of scales, will be in [-18, 18]
if (pw > 0)
t *= IDB_pow[pw];
else if (pw < 0)
t /= IDB_pow[-pw];
break;
}
@ -542,45 +521,26 @@ void WindowFunctionType::implicit2T(uint64_t i, T& t, int s)
t = (T) fRow.getUintField(i);
else
t = (T) fRow.getUint128Field(i);
pw = s - fRow.getScale(i); // pw is difference of scales, will be in [-18, 18]
if (pw > 0)
t *= IDB_pow[pw];
else if (pw < 0)
t /= IDB_pow[-pw];
break;
}
case CalpontSystemCatalog::DOUBLE:
case CalpontSystemCatalog::UDOUBLE:
{
if (s == 0)
t = (T) fRow.getDoubleField(i);
else
t = (T) (fRow.getDoubleField(i) * IDB_pow[s]); // s is scale, [0, 18]
t = (T) fRow.getDoubleField(i);
break;
}
case CalpontSystemCatalog::FLOAT:
case CalpontSystemCatalog::UFLOAT:
{
if (s == 0)
t = (T) fRow.getFloatField(i);
else
t = (T) (fRow.getFloatField(i) * IDB_pow[s]); // s is scale, [0, 18]
t = (T) fRow.getFloatField(i);
break;
}
case CalpontSystemCatalog::LONGDOUBLE:
{
if (s == 0)
t = (T) fRow.getLongDoubleField(i);
else
t = (T) (fRow.getLongDoubleField(i) * IDB_pow[s]); // s is scale, [0, 18]
t = (T) fRow.getLongDoubleField(i);
break;
}
@ -596,6 +556,15 @@ void WindowFunctionType::implicit2T(uint64_t i, T& t, int s)
break;
}
}
s -= fRow.getScale(i); // we scale only the difference of scales
datatypes::getScaleDivisor(divisor, abs(s));
if (s > 0)
t *= divisor;
else if (s < 0)
t /= divisor;
}
template<>