Merge pull request #14806 from taosdata/fix/merge_interval_agg

enh(query): aggregation function adoption for MIA operator 

source/libs/function/src/builtinsimpl.c

@@ -908,10 +908,12 @@ int32_t avgFunctionMerge(SqlFunctionCtx* pCtx) {
   SAvgRes* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
 
   int32_t start = pInput->startRowIndex;
-  char*    data = colDataGetData(pCol, start);
-  SAvgRes* pInputInfo = (SAvgRes*)varDataVal(data);
 
+  for(int32_t i = start; i < start + pInput->numOfRows; ++i) {
+    char* data = colDataGetData(pCol, i);
+    SAvgRes* pInputInfo = (SAvgRes*)varDataVal(data);
     avgTransferInfo(pInputInfo, pInfo);
+  }
 
   SET_VAL(GET_RES_INFO(pCtx), 1, 1);
 
@@ -2513,10 +2515,12 @@ int32_t apercentileFunctionMerge(SqlFunctionCtx* pCtx) {
   SAPercentileInfo* pInfo = GET_ROWCELL_INTERBUF(pResInfo);
 
   int32_t start = pInput->startRowIndex;
-  char*             data = colDataGetData(pCol, start);
-  SAPercentileInfo* pInputInfo = (SAPercentileInfo*)varDataVal(data);
 
+  for(int32_t i = start; i < start + pInput->numOfRows; ++i) {
+    char* data = colDataGetData(pCol, i);
+    SAPercentileInfo* pInputInfo = (SAPercentileInfo*)varDataVal(data);
     apercentileTransferInfo(pInputInfo, pInfo);
+  }
 
   SET_VAL(pResInfo, 1, 1);
   return TSDB_CODE_SUCCESS;
@@ -2878,12 +2882,16 @@ static int32_t firstLastFunctionMergeImpl(SqlFunctionCtx* pCtx, bool isFirstQuer
   SFirstLastRes* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
 
   int32_t start = pInput->startRowIndex;
-  char*          data = colDataGetData(pCol, start);
-  SFirstLastRes* pInputInfo = (SFirstLastRes*)varDataVal(data);
+  int32_t numOfElems = 0;
 
+  for(int32_t i = start; i < start + pInput->numOfRows; ++i) {
+    char* data = colDataGetData(pCol, i);
+    SFirstLastRes* pInputInfo = (SFirstLastRes*)varDataVal(data);
     firstLastTransferInfo(pCtx, pInputInfo, pInfo, isFirstQuery);
-
-  int32_t numOfElems = pInputInfo->hasResult ? 1 : 0;
+    if (!numOfElems) {
+      numOfElems = pInputInfo->hasResult ? 1 : 0;
+    }
+  }
 
   SET_VAL(GET_RES_INFO(pCtx), numOfElems, 1);
 
@@ -3704,10 +3712,12 @@ int32_t spreadFunctionMerge(SqlFunctionCtx* pCtx) {
   SSpreadInfo* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
 
   int32_t start = pInput->startRowIndex;
-  char*        data = colDataGetData(pCol, start);
-  SSpreadInfo* pInputInfo = (SSpreadInfo*)varDataVal(data);
 
+  for(int32_t i = start; i < start + pInput->numOfRows; ++i) {
+    char* data = colDataGetData(pCol, i);
+    SSpreadInfo* pInputInfo = (SSpreadInfo*)varDataVal(data);
     spreadTransferInfo(pInputInfo, pInfo);
+  }
 
   SET_VAL(GET_RES_INFO(pCtx), 1, 1);
 
@@ -3874,10 +3884,12 @@ int32_t elapsedFunctionMerge(SqlFunctionCtx* pCtx) {
   SElapsedInfo* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
 
   int32_t start = pInput->startRowIndex;
-  char*         data = colDataGetData(pCol, start);
-  SElapsedInfo* pInputInfo = (SElapsedInfo*)varDataVal(data);
 
+  for(int32_t i = start; i < start + pInput->numOfRows; ++i) {
+    char* data = colDataGetData(pCol, i);
+    SElapsedInfo* pInputInfo = (SElapsedInfo*)varDataVal(data);
     elapsedTransferInfo(pInputInfo, pInfo);
+  }
 
   SET_VAL(GET_RES_INFO(pCtx), 1, 1);
   return TSDB_CODE_SUCCESS;
@@ -4386,10 +4398,12 @@ int32_t hllFunctionMerge(SqlFunctionCtx* pCtx) {
   SHLLInfo* pInfo = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
 
   int32_t start = pInput->startRowIndex;
-  char*     data = colDataGetData(pCol, start);
-  SHLLInfo* pInputInfo = (SHLLInfo*)varDataVal(data);
 
+  for(int32_t i = start; i < start + pInput->numOfRows; ++i) {
+    char* data = colDataGetData(pCol, i);
+    SHLLInfo* pInputInfo = (SHLLInfo*)varDataVal(data);
     hllTransferInfo(pInputInfo, pInfo);
+  }
 
   SET_VAL(GET_RES_INFO(pCtx), 1, 1);
   return TSDB_CODE_SUCCESS;