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Basic SELECT support for Decimal38

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This commit is contained in:
Gagan Goel
2020-01-09 12:37:21 -05:00
committed by Roman Nozdrin
parent 63dcaa387f
commit 77e1d6abe3
7 changed files with 98 additions and 16 deletions
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16
dbcon/mysql/ha_mcs_impl.cpp
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@ -247,6 +247,9 @@ void force_close_fep_conn(THD *thd, cal_connection_info* ci, bool check_prev_rc
ci->cal_conn_hndl = 0;
}
// WIP MCOL-641
using uint128_t = unsigned __int128;
void storeNumericField(Field** f, int64_t value, CalpontSystemCatalog::ColType& ct)
{
// unset null bit first
@ -801,15 +804,24 @@ int fetchNextRow(uchar* buf, cal_table_info& ti, cal_connection_info* ci, bool h
case CalpontSystemCatalog::DECIMAL:
case CalpontSystemCatalog::UDECIMAL:
{
// WIP MCOL-641
if (row.getPrecision(s) > 18)
{
sscanf(row.getBinaryField(s).c_str(), "%ld",&intColVal);
// unset null bit first
if ((*f)->null_ptr)
*(*f)->null_ptr &= ~(*f)->null_bit;
const uint128_t val = *reinterpret_cast<const uint128_t*>(row.getBinaryField2(s));
char buf[256];
dataconvert::DataConvert::decimalToString(val, (unsigned)colType.scale, buf, 256, colType.colDataType);
Field_new_decimal* f2 = (Field_new_decimal*)*f;
f2->store(buf, strlen(buf), f2->charset());
}
else
{
intColVal = row.getIntField(s);
storeNumericField(f, intColVal, colType);
}
storeNumericField(f, intColVal, colType);
break;
}