fix(query): fix n-1 function if select column after function position

result row is incorrect.

fix/TD-18040

include/libs/function/functionMgt.h

@@ -202,6 +202,7 @@ bool fmIsForbidStreamFunc(int32_t funcId);
 bool fmIsIntervalInterpoFunc(int32_t funcId);
 bool fmIsInterpFunc(int32_t funcId);
 bool fmIsLastRowFunc(int32_t funcId);
+bool fmIsSelectValueFunc(int32_t funcId);
 bool fmIsSystemInfoFunc(int32_t funcId);
 bool fmIsImplicitTsFunc(int32_t funcId);
 bool fmIsClientPseudoColumnFunc(int32_t funcId);

source/libs/executor/src/executorimpl.c

@@ -672,6 +672,10 @@ int32_t projectApplyFunctions(SExprInfo* pExpr, SSDataBlock* pResult, SSDataBloc
 
         numOfRows = pfCtx->fpSet.process(pfCtx);
       } else if (fmIsAggFunc(pfCtx->functionId)) {
+        // diff/derivative selective value should be set during function execution
+        if (fmIsSelectValueFunc(pfCtx->functionId)) {
+          continue;
+        }
         // _group_key function for "partition by tbname" + csum(col_name) query
         SColumnInfoData* pOutput = taosArrayGet(pResult->pDataBlock, outputSlotId);
         int32_t          slotId = pfCtx->param[0].pCol->slotId;

source/libs/function/src/functionMgt.c

@@ -221,6 +221,13 @@ bool fmIsLastRowFunc(int32_t funcId) {
   return FUNCTION_TYPE_LAST_ROW == funcMgtBuiltins[funcId].type;
 }
 
+bool fmIsSelectValueFunc(int32_t funcId) {
+  if (funcId < 0 || funcId >= funcMgtBuiltinsNum) {
+    return false;
+  }
+  return FUNCTION_TYPE_SELECT_VALUE == funcMgtBuiltins[funcId].type;
+}
+
 void fmFuncMgtDestroy() {
   void* m = gFunMgtService.pFuncNameHashTable;
   if (m != NULL && atomic_val_compare_exchange_ptr((void**)&gFunMgtService.pFuncNameHashTable, m, 0) == m) {