fix: support multi-rows with same ts for join operator

source/libs/executor/src/joinoperator.c

@@ -116,7 +116,8 @@ void destroyMergeJoinOperator(void* param, int32_t numOfOutput) {
 }
 
 static void mergeJoinJoinLeftRight(struct SOperatorInfo* pOperator, SSDataBlock* pRes, int32_t currRow,
-                            SSDataBlock* pLeftBlock, int32_t leftPos, SSDataBlock* pRightBlock, int32_t rightPos) {
+                                   SSDataBlock* pLeftBlock, int32_t leftPos, SSDataBlock* pRightBlock,
+                                   int32_t rightPos) {
   SJoinOperatorInfo* pJoinInfo = pOperator->info;
 
   for (int32_t i = 0; i < pOperator->exprSupp.numOfExprs; ++i) {
@@ -144,24 +145,22 @@ static void mergeJoinJoinLeftRight(struct SOperatorInfo* pOperator, SSDataBlock*
       colDataAppend(pDst, currRow, p, false);
     }
   }
-
 }
 typedef struct SRowLocation {
-    SSDataBlock* pDataBlock;
-    int32_t pos;
+  SSDataBlock* pDataBlock;
+  int32_t      pos;
 } SRowLocation;
 
-static int32_t mergeJoinGetBlockRowsEqualStart(SSDataBlock* pBlock, int16_t slotId, int32_t startPos,
-                                                   SArray* pPosArray) {
+static int32_t mergeJoinGetBlockRowsEqualTs(SSDataBlock* pBlock, int16_t slotId, int32_t startPos, int64_t timestamp,
+                                               SArray* pPosArray) {
   int32_t numRows = pBlock->info.rows;
   ASSERT(startPos < numRows);
   SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);
 
   int32_t i = startPos;
-  char*   pVal = colDataGetData(pCol, i);
-  for (i = startPos + 1; i < numRows; ++i) {
+  for (; i < numRows; ++i) {
     char* pNextVal = colDataGetData(pCol, i);
-    if (*(int64_t*)pVal != *(int64_t*)pNextVal) {
+    if (timestamp != *(int64_t*)pNextVal) {
       break;
     }
   }
@@ -171,7 +170,7 @@ static int32_t mergeJoinGetBlockRowsEqualStart(SSDataBlock* pBlock, int16_t slot
   if (endPos - startPos > 1) {
     block = blockDataExtractBlock(pBlock, startPos, endPos - startPos);
   }
-  SRowLocation  location = {0};
+  SRowLocation location = {0};
   for (int32_t j = startPos; j < endPos; ++j) {
     location.pDataBlock = block;
     location.pos = j;
@@ -180,6 +179,11 @@ static int32_t mergeJoinGetBlockRowsEqualStart(SSDataBlock* pBlock, int16_t slot
   return 0;
 }
 
+static int32_t mergeJoinGetRowsEqualTimeStamp(SJoinOperatorInfo* pJoinInfo, SArray* pPosArray) {
+
+  return 0;
+}
+
 static bool mergeJoinGetNextTimestamp(SOperatorInfo* pOperator, int64_t* pLeftTs, int64_t* pRightTs) {
   SJoinOperatorInfo* pJoinInfo = pOperator->info;
 
@@ -228,14 +232,14 @@ static void doMergeJoinImpl(struct SOperatorInfo* pOperator, SSDataBlock* pRes)
   while (1) {
     int64_t leftTs = 0;
     int64_t rightTs = 0;
-    bool hasNextTs = mergeJoinGetNextTimestamp(pOperator, &leftTs, &rightTs);
+    bool    hasNextTs = mergeJoinGetNextTimestamp(pOperator, &leftTs, &rightTs);
     if (!hasNextTs) {
       break;
     }
 
     if (leftTs == rightTs) {
-      mergeJoinJoinLeftRight(pOperator, pRes, nrows,
-                      pJoinInfo->pLeft, pJoinInfo->leftPos, pJoinInfo->pRight, pJoinInfo->rightPos);
+      mergeJoinJoinLeftRight(pOperator, pRes, nrows, pJoinInfo->pLeft, pJoinInfo->leftPos, pJoinInfo->pRight,
+                             pJoinInfo->rightPos);
       pJoinInfo->leftPos += 1;
       pJoinInfo->rightPos += 1;