refactor

source/libs/scalar/src/sclfunc.c

@@ -2381,17 +2381,11 @@ int32_t spreadScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarPara
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t derivativeScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput) {
-  pOutput->numOfRows = 0;
-  return TSDB_CODE_SUCCESS;
-}
-
-int32_t irateScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput) {
+int32_t nonCalcScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput) {
   SColumnInfoData *pInputData  = pInput->columnData;
   SColumnInfoData *pOutputData = pOutput->columnData;
 
   int32_t type = GET_PARAM_TYPE(pInput);
-  //int64_t count = 0, sum = 0, qSum = 0;
   bool hasNull = false;
 
   for (int32_t i = 0; i < pInput->numOfRows; ++i) {
@@ -2411,3 +2405,11 @@ int32_t irateScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam
   pOutput->numOfRows = 1;
   return TSDB_CODE_SUCCESS;
 }
+
+int32_t derivativeScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput) {
+  return nonCalcScalarFunction(pInput, inputNum, pOutput);
+}
+
+int32_t irateScalarFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutput) {
+  return nonCalcScalarFunction(pInput, inputNum, pOutput);
+}