Merge pull request #15710 from taosdata/feature/3.0_query_optimize_wxy

enh: last_row function scan in reverse order

source/libs/planner/src/planOptimizer.c

@@ -242,7 +242,7 @@ static int32_t scanPathOptGetScanOrder(SScanLogicNode* pScan, EScanOrder* pScanO
     SFunctionNode* pFunc = (SFunctionNode*)pNode;
     if (FUNCTION_TYPE_FIRST == pFunc->funcType) {
       hasFirst = true;
-    } else if (FUNCTION_TYPE_LAST == pFunc->funcType) {
+    } else if (FUNCTION_TYPE_LAST == pFunc->funcType || FUNCTION_TYPE_LAST_ROW == pFunc->funcType) {
       hasLast = true;
     } else if (FUNCTION_TYPE_SELECT_VALUE != pFunc->funcType) {
       otherFunc = true;
@@ -436,8 +436,8 @@ static int32_t pushDownCondOptDealScan(SOptimizeContext* pCxt, SScanLogicNode* p
 
   SNode*  pPrimaryKeyCond = NULL;
   SNode*  pOtherCond = NULL;
-  int32_t code = filterPartitionCond(&pScan->node.pConditions, &pPrimaryKeyCond, &pScan->pTagIndexCond, &pScan->pTagCond,
-                                    &pOtherCond);
+  int32_t code = filterPartitionCond(&pScan->node.pConditions, &pPrimaryKeyCond, &pScan->pTagIndexCond,
+                                     &pScan->pTagCond, &pOtherCond);
   if (TSDB_CODE_SUCCESS == code && NULL != pScan->pTagCond) {
     code = pushDownCondOptRebuildTbanme(&pScan->pTagCond);
   }