fix: selectivity

source/libs/function/src/builtinsimpl.c

@@ -818,8 +818,8 @@ void setSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, const STuple
     return;
   }
 
-  if (pCtx->saveHandle.pBuf != NULL) {
-    if (pTuplePos->pageId != -1) {
+  if ((pCtx->saveHandle.pBuf != NULL && pTuplePos->pageId != -1) ||
+      (pCtx->saveHandle.pState && pTuplePos->streamTupleKey.ts > 0)) {
     int32_t     numOfCols = pCtx->subsidiaries.num;
     const char* p = loadTupleData(pCtx, pTuplePos);
 
@@ -841,7 +841,6 @@ void setSelectivityValue(SqlFunctionCtx* pCtx, SSDataBlock* pBlock, const STuple
       pStart += pDstCol->info.bytes;
     }
   }
-  }
 }
 
 void releaseSource(STuplePos* pPos) {
@@ -2071,8 +2070,8 @@ int32_t firstFunction(SqlFunctionCtx* pCtx) {
 
   int32_t blockDataOrder = (startKey <= endKey) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
 
-  //  please ref. to the comment in lastRowFunction for the reason why disabling the opt version of last/first function.
-  //  we will use this opt implementation in an new version that is only available in scan subplan
+  //  please ref. to the comment in lastRowFunction for the reason why disabling the opt version of last/first
+  //  function. we will use this opt implementation in an new version that is only available in scan subplan
 #if 0
   if (blockDataOrder == TSDB_ORDER_ASC) {
     // filter according to current result firstly
@@ -2179,7 +2178,8 @@ int32_t lastFunction(SqlFunctionCtx* pCtx) {
 
   int32_t blockDataOrder = (startKey <= endKey) ? TSDB_ORDER_ASC : TSDB_ORDER_DESC;
 
-  //  please ref. to the comment in lastRowFunction for the reason why disabling the opt version of last/first function.
+  //  please ref. to the comment in lastRowFunction for the reason why disabling the opt version of last/first
+  //  function.
 #if 0
   if (blockDataOrder == TSDB_ORDER_ASC) {
     for (int32_t i = pInput->numOfRows + pInput->startRowIndex - 1; i >= pInput->startRowIndex; --i) {