Function DecimalVal VarSum

be/src/testutil/test-udfs.cc:132–148

Decimal4Value... => Decimal8Value

// Decimal4Value... => Decimal8Value
IMPALA_UDF_EXPORT
DecimalVal VarSum(FunctionContext* context, int n, const DecimalVal* args) {
  int64_t result = 0;
  bool is_null = true;
  for (int i = 0; i < n; ++i) {
    const FunctionContext::TypeDesc* desc = context->GetArgType(i);
    if (desc->type != FunctionContext::TYPE_DECIMAL || desc->precision > 9) {
      context->SetError("VarSum() only accepts Decimal4Value (precison <= 9)");
      return DecimalVal::null();
    }
    if (args[i].is_null) continue;
    result += args[i].val4;
    is_null = false;
  }
  if (is_null) return DecimalVal::null();
  return DecimalVal(result);
}

IMPALA_UDF_EXPORT
DoubleVal NO_INLINE VarSumMultiply(FunctionContext* context,