diff --git a/include/libs/nodes/plannodes.h b/include/libs/nodes/plannodes.h
index 6c19a72840..dc133b465f 100644
--- a/include/libs/nodes/plannodes.h
+++ b/include/libs/nodes/plannodes.h
@@ -130,6 +130,7 @@ typedef struct SJoinLogicNode {
   SNode*         pWindowOffset;
   SNode*         pJLimit;
   EJoinAlgorithm joinAlgo;
+  SNode*         winPrimEqCond;
   SNode*         pPrimKeyEqCond;
   SNode*         pColEqCond;
   SNode*         pColOnCond;
diff --git a/include/libs/nodes/querynodes.h b/include/libs/nodes/querynodes.h
index b471761621..8214fcb10f 100644
--- a/include/libs/nodes/querynodes.h
+++ b/include/libs/nodes/querynodes.h
@@ -208,6 +208,7 @@ typedef struct SViewNode {
 
 #define IS_INNER_NONE_JOIN(_type, _stype) ((_type) == JOIN_TYPE_INNER && (_stype) == JOIN_STYPE_NONE)
 #define IS_WINDOW_JOIN(_stype) ((_stype) == JOIN_STYPE_WIN)
+#define IS_ASOF_JOIN(_stype) ((_stype) == JOIN_STYPE_ASOF)
 
 typedef enum EJoinType { 
   JOIN_TYPE_INNER = 0,
@@ -243,6 +244,7 @@ typedef struct SJoinTableNode {
   EJoinSubType subType;
   SNode*       pWindowOffset;
   SNode*       pJLimit;
+  SNode*       winPrimCond;
   bool         hasSubQuery;
   bool         isLowLevelJoin;
   SNode*       pParent;
diff --git a/source/common/src/tdatablock.c b/source/common/src/tdatablock.c
index 8b77955215..1321567c1d 100644
--- a/source/common/src/tdatablock.c
+++ b/source/common/src/tdatablock.c
@@ -636,6 +636,7 @@ int32_t blockDataMerge(SSDataBlock* pDest, const SSDataBlock* pSrc) {
 
 int32_t blockDataMergeNRows(SSDataBlock* pDest, const SSDataBlock* pSrc, int32_t srcIdx, int32_t numOfRows) {
   if (pDest->info.rows + numOfRows > pDest->info.capacity) {
+    ASSERT(0);
     return TSDB_CODE_FAILED;
   }
 
diff --git a/source/libs/executor/inc/mergejoin.h b/source/libs/executor/inc/mergejoin.h
index da0bf51bde..c3c2a39320 100755
--- a/source/libs/executor/inc/mergejoin.h
+++ b/source/libs/executor/inc/mergejoin.h
@@ -140,6 +140,13 @@ typedef struct SMJoinTableCtx {
   SMJoinNMatchCtx  nMatchCtx;
 } SMJoinTableCtx;
 
+typedef struct SMJoinMatchInfo {
+  int32_t      rowBitmapOffset;
+  int32_t      rowMatchNum;
+  bool         allRowsNMatch;
+  bool         allRowsMatch;
+} SMJoinMatchInfo;
+
 typedef struct SMJoinGrpRows {
   SSDataBlock* blk;
   int32_t      beginIdx;
@@ -150,6 +157,7 @@ typedef struct SMJoinGrpRows {
   bool         allRowsNMatch;
   bool         allRowsMatch;
   bool         readMatch;
+  bool         clonedBlk;
 } SMJoinGrpRows;
 
 #define MJOIN_COMMON_CTX \
@@ -223,6 +231,7 @@ typedef struct SMJoinWindowCtx {
   int32_t                    asofOpType;
   int64_t                    winBeginOffset;
   int64_t                    winEndOffset;
+  bool                       winProjection;
   bool                       lowerRowsAcq;
   bool                       eqRowsAcq;
   bool                       greaterRowsAcq;
@@ -407,7 +416,7 @@ int32_t mJoinCreateFullBuildTbHash(SMJoinOperatorInfo* pJoin, SMJoinTableCtx* pT
 int32_t mJoinCreateBuildTbHash(SMJoinOperatorInfo* pJoin, SMJoinTableCtx* pTable);
 int32_t mJoinSetKeyColsData(SSDataBlock* pBlock, SMJoinTableCtx* pTable);
 int32_t mJoinProcessEqualGrp(SMJoinMergeCtx* pCtx, int64_t timestamp, bool lastBuildGrp);
-bool mJoinHashGrpCart(SSDataBlock* pBlk, SMJoinGrpRows* probeGrp, bool append, SMJoinTableCtx* probe, SMJoinTableCtx* build);
+bool    mJoinHashGrpCart(SSDataBlock* pBlk, SMJoinGrpRows* probeGrp, bool append, SMJoinTableCtx* probe, SMJoinTableCtx* build);
 int32_t mJoinMergeGrpCart(SMJoinOperatorInfo* pJoin, SSDataBlock* pRes, bool append, SMJoinGrpRows* pFirst, SMJoinGrpRows* pSecond);
 int32_t mJoinHandleMidRemains(SMJoinMergeCtx* pCtx);
 int32_t mJoinNonEqGrpCart(SMJoinOperatorInfo* pJoin, SSDataBlock* pRes, bool append, SMJoinGrpRows* pGrp, bool probeGrp);
@@ -420,6 +429,7 @@ int32_t mJoinProcessLowerGrp(SMJoinMergeCtx* pCtx, SMJoinTableCtx* pTb, SColumnI
 int32_t mJoinProcessGreaterGrp(SMJoinMergeCtx* pCtx, SMJoinTableCtx* pTb, SColumnInfoData* pCol,  int64_t* probeTs, int64_t* buildTs);
 int32_t mJoinFilterAndKeepSingleRow(SSDataBlock* pBlock, SFilterInfo* pFilterInfo);
 int32_t mJoinFilterAndNoKeepRows(SSDataBlock* pBlock, SFilterInfo* pFilterInfo);
+int32_t mJoinBuildEqGrp(SMJoinTableCtx* pTable, int64_t timestamp, bool* wholeBlk, SMJoinGrpRows* pGrp);
 
 
 #ifdef __cplusplus
diff --git a/source/libs/executor/src/mergejoin.c b/source/libs/executor/src/mergejoin.c
index 4fa901f579..b6fc8c344d 100755
--- a/source/libs/executor/src/mergejoin.c
+++ b/source/libs/executor/src/mergejoin.c
@@ -27,6 +27,76 @@
 #include "ttypes.h"
 #include "mergejoin.h"
 
+
+
+int32_t mWinJoinDumpGrpCache(SMJoinWindowCtx* pCtx) {
+  int64_t rowsLeft = pCtx->finBlk->info.capacity - pCtx->finBlk->info.rows;
+  SMJoinWinCache* cache = &pCtx->cache;
+  int32_t buildGrpNum = taosArrayGetSize(cache->grps);
+  int64_t buildTotalRows = TMIN(cache->rowNum, pCtx->jLimit);
+  if (buildGrpNum <= 0 || buildTotalRows <= 0) {
+    return mJoinNonEqCart((SMJoinCommonCtx*)pCtx, &pCtx->probeGrp, true);
+  }
+  
+  SMJoinGrpRows* probeGrp = &pCtx->probeGrp;
+  int32_t probeRows = GRP_REMAIN_ROWS(probeGrp);
+  int32_t probeEndIdx = probeGrp->endIdx;
+
+  if (0 == cache->grpIdx && probeRows * buildTotalRows <= rowsLeft) {
+    SMJoinGrpRows* pFirstBuild = taosArrayGet(cache->grps, 0);
+    if (pFirstBuild->readIdx == pFirstBuild->beginIdx) {
+      for (; cache->grpIdx < buildGrpNum; ++cache->grpIdx) {
+        SMJoinGrpRows* buildGrp = taosArrayGet(cache->grps, cache->grpIdx);
+        MJ_ERR_RET(mJoinMergeGrpCart(pCtx->pJoin, pCtx->finBlk, true, probeGrp, buildGrp));
+        buildGrp->readIdx = buildGrp->beginIdx;
+      }
+
+      cache->grpIdx = 0;
+      pCtx->grpRemains = false;
+      return TSDB_CODE_SUCCESS;
+    }
+  }
+
+  for (; !GRP_DONE(probeGrp); ) {
+    probeGrp->endIdx = probeGrp->readIdx;
+    for (; cache->grpIdx < buildGrpNum && rowsLeft > 0; ++cache->grpIdx) {
+      SMJoinGrpRows* buildGrp = taosArrayGet(cache->grps, cache->grpIdx);
+
+      if (rowsLeft >= GRP_REMAIN_ROWS(buildGrp)) {
+        MJ_ERR_RET(mJoinMergeGrpCart(pCtx->pJoin, pCtx->finBlk, true, probeGrp, buildGrp));
+        rowsLeft -= GRP_REMAIN_ROWS(buildGrp);
+        buildGrp->readIdx = buildGrp->beginIdx;
+        continue;
+      }
+      
+      int32_t buildEndIdx = buildGrp->endIdx;
+      buildGrp->endIdx = buildGrp->readIdx + rowsLeft - 1;
+      mJoinMergeGrpCart(pCtx->pJoin, pCtx->finBlk, true, probeGrp, buildGrp);
+      buildGrp->readIdx += rowsLeft;
+      buildGrp->endIdx = buildEndIdx;
+      rowsLeft = 0;
+      break;
+    }
+    probeGrp->endIdx = probeEndIdx;
+
+    if (cache->grpIdx >= buildGrpNum) {
+      cache->grpIdx = 0;
+      ++probeGrp->readIdx; 
+    }
+
+    if (rowsLeft <= 0) {
+      break;
+    }
+  }
+
+  probeGrp->endIdx = probeEndIdx;        
+
+  pCtx->grpRemains = probeGrp->readIdx <= probeGrp->endIdx;
+  
+  return TSDB_CODE_SUCCESS;  
+}
+
+
 static int32_t mOuterJoinHashFullCart(SMJoinMergeCtx* pCtx) {
   SMJoinTableCtx* probe = pCtx->pJoin->probe;
   SMJoinTableCtx* build = pCtx->pJoin->build;
@@ -1714,41 +1784,6 @@ _return:
 }
 
 
-int32_t mAsofJoinBuildEqGrp(SMJoinTableCtx* pTable, int64_t timestamp, bool* wholeBlk, SMJoinGrpRows* pGrp) {
-  SColumnInfoData* pCol = taosArrayGet(pTable->blk->pDataBlock, pTable->primCol->srcSlot);
-
-  if (*(int64_t*)colDataGetNumData(pCol, pTable->blkRowIdx) != timestamp) {
-    return TSDB_CODE_SUCCESS;
-  }
-
-  pGrp->beginIdx = pTable->blkRowIdx;
-  pGrp->readIdx = pTable->blkRowIdx;
-
-  pTable->blkRowIdx++;
-  char* pEndVal = colDataGetNumData(pCol, pTable->blk->info.rows - 1);
-  if (timestamp != *(int64_t*)pEndVal) {
-    for (; pTable->blkRowIdx < pTable->blk->info.rows; ++pTable->blkRowIdx) {
-      char* pNextVal = colDataGetNumData(pCol, pTable->blkRowIdx);
-      if (timestamp == *(int64_t*)pNextVal) {
-        continue;
-      }
-
-      pGrp->endIdx = pTable->blkRowIdx - 1;
-      return TSDB_CODE_SUCCESS;
-    }
-  }
-
-  pGrp->endIdx = pTable->blk->info.rows - 1;
-  pTable->blkRowIdx = pTable->blk->info.rows;
-
-  if (wholeBlk) {
-    *wholeBlk = true;
-  }
-
-  return TSDB_CODE_SUCCESS;
-}
-
-
 int32_t mAsofLowerCalcRowNum(SMJoinWinCache* pCache, int64_t jLimit, int32_t newRows, int32_t* evictRows) {
   if (pCache->outBlk->info.rows <= 0) {
     *evictRows = 0;
@@ -1821,7 +1856,7 @@ int32_t mAsofLowerAddEqRowsToCache(struct SOperatorInfo* pOperator, SMJoinWindow
       
       eqRowsNum += grp.endIdx - grp.beginIdx + 1;
 
-    if (pTable->blkRowIdx == pTable->blk->info.rows) {
+    if (pTable->blkRowIdx == pTable->blk->info.rows && !pTable->dsFetchDone) {
       pTable->blk = getNextBlockFromDownstreamRemain(pOperator, pTable->downStreamIdx);
       qDebug("%s merge join %s table got block for same ts, rows:%" PRId64, GET_TASKID(pOperator->pTaskInfo), MJOIN_TBTYPE(pTable->type), pTable->blk ? pTable->blk->info.rows : 0);
 
@@ -1948,7 +1983,7 @@ int32_t mAsofLowerProcessEqualGrp(SMJoinWindowCtx* pCtx, int64_t timestamp, bool
   }
 
   bool wholeBlk = false;
-  MJ_ERR_RET(mAsofJoinBuildEqGrp(pJoin->probe, timestamp, &wholeBlk, &pCtx->probeGrp));
+  MJ_ERR_RET(mJoinBuildEqGrp(pJoin->probe, timestamp, &wholeBlk, &pCtx->probeGrp));
 
   MJ_ERR_RET(mAsofLowerDumpUpdateEqRows(pCtx, pJoin, lastBuildGrp, wholeBlk));
   
@@ -2129,81 +2164,25 @@ _return:
   return pCtx->finBlk;
 }
 
-
-int32_t mAsofGreaterDumpGrpCache(SMJoinWindowCtx* pCtx) {
-  int64_t rowsLeft = pCtx->finBlk->info.capacity - pCtx->finBlk->info.rows;
-  SMJoinWinCache* cache = &pCtx->cache;
-  int32_t buildGrpNum = taosArrayGetSize(cache->grps);
-  int64_t buildTotalRows = (cache->rowNum > pCtx->jLimit) ? pCtx->jLimit : cache->rowNum;
-  if (buildGrpNum <= 0 || buildTotalRows <= 0) {
-    return mJoinNonEqCart((SMJoinCommonCtx*)pCtx, &pCtx->probeGrp, true);
-  }
-  
-  SMJoinGrpRows* probeGrp = &pCtx->probeGrp;
-  int32_t probeRows = GRP_REMAIN_ROWS(probeGrp);
-  int32_t probeEndIdx = probeGrp->endIdx;
-
-  if (0 == cache->grpIdx && probeRows * buildTotalRows <= rowsLeft) {
-    SMJoinGrpRows* pFirstBuild = taosArrayGet(cache->grps, 0);
-    if (pFirstBuild->readIdx == pFirstBuild->beginIdx) {
-      for (; cache->grpIdx < buildGrpNum; ++cache->grpIdx) {
-        SMJoinGrpRows* buildGrp = taosArrayGet(cache->grps, cache->grpIdx);
-        MJ_ERR_RET(mJoinMergeGrpCart(pCtx->pJoin, pCtx->finBlk, true, probeGrp, buildGrp));
-        buildGrp->readIdx = buildGrp->beginIdx;
-      }
-
-      cache->grpIdx = 0;
-      pCtx->grpRemains = false;
-      return TSDB_CODE_SUCCESS;
-    }
+int32_t mAsofGreaterTrimCacheBlk(SMJoinWindowCtx* pCtx) {
+  SMJoinGrpRows* pGrp = taosArrayGet(pCtx->cache.grps, 0);
+  if (pGrp->blk == pCtx->cache.outBlk && pCtx->pJoin->build->blkRowIdx > 0) {
+    MJ_ERR_RET(blockDataTrimFirstRows(pGrp->blk, pCtx->pJoin->build->blkRowIdx));
+    pCtx->pJoin->build->blkRowIdx = 0;
+    ASSERT(pCtx->pJoin->build->blk == pGrp->blk);
+    MJOIN_SAVE_TB_BLK(&pCtx->cache, pCtx->pJoin->build);
   }
 
-  for (; !GRP_DONE(probeGrp); ) {
-    probeGrp->endIdx = probeGrp->readIdx;
-    for (; cache->grpIdx < buildGrpNum && rowsLeft > 0; ++cache->grpIdx) {
-      SMJoinGrpRows* buildGrp = taosArrayGet(cache->grps, cache->grpIdx);
-
-      if (rowsLeft >= GRP_REMAIN_ROWS(buildGrp)) {
-        MJ_ERR_RET(mJoinMergeGrpCart(pCtx->pJoin, pCtx->finBlk, true, probeGrp, buildGrp));
-        rowsLeft -= GRP_REMAIN_ROWS(buildGrp);
-        buildGrp->readIdx = buildGrp->beginIdx;
-        continue;
-      }
-      
-      int32_t buildEndIdx = buildGrp->endIdx;
-      buildGrp->endIdx = buildGrp->readIdx + rowsLeft - 1;
-      mJoinMergeGrpCart(pCtx->pJoin, pCtx->finBlk, true, probeGrp, buildGrp);
-      buildGrp->readIdx += rowsLeft;
-      buildGrp->endIdx = buildEndIdx;
-      rowsLeft = 0;
-      break;
-    }
-    probeGrp->endIdx = probeEndIdx;
-
-    if (cache->grpIdx >= buildGrpNum) {
-      cache->grpIdx = 0;
-      ++probeGrp->readIdx; 
-    }
-
-    if (rowsLeft <= 0) {
-      break;
-    }
-  }
-
-  probeGrp->endIdx = probeEndIdx;        
-
-  pCtx->grpRemains = probeGrp->readIdx <= probeGrp->endIdx;
-  
-  return TSDB_CODE_SUCCESS;  
+  return TSDB_CODE_SUCCESS;
 }
 
-
-
 int32_t mAsofGreaterChkFillGrpCache(SMJoinWindowCtx* pCtx) {
   if (pCtx->cache.rowNum >= pCtx->jLimit || pCtx->pJoin->build->dsFetchDone) {
     return TSDB_CODE_SUCCESS;
   }
 
+  MJ_ERR_RET(mAsofGreaterTrimCacheBlk(pCtx));
+
   SMJoinTableCtx* build = pCtx->pJoin->build;
   SMJoinWinCache* pCache = &pCtx->cache;
   int32_t grpNum = taosArrayGetSize(pCache->grps);
@@ -2289,7 +2268,7 @@ int32_t mAsofGreaterFillDumpGrpCache(SMJoinWindowCtx* pCtx, bool lastBuildGrp) {
 
   mAsofGreaterUpdateBuildGrpEndIdx(pCtx);
   
-  return mAsofGreaterDumpGrpCache(pCtx);
+  return mWinJoinDumpGrpCache(pCtx);
 }
 
 int32_t mAsofGreaterSkipEqRows(SMJoinWindowCtx* pCtx, SMJoinTableCtx* pTable, int64_t timestamp, bool* wholeBlk) {
@@ -2342,6 +2321,10 @@ int32_t mAsofGreaterSkipAllEqRows(SMJoinWindowCtx* pCtx, int64_t timestamp) {
 
     ASSERT(pCtx->cache.rowNum == 0);
     ASSERT(taosArrayGetSize(pCtx->cache.grps) == 0);
+
+    if (pTable->dsFetchDone) {
+      return TSDB_CODE_SUCCESS;
+    }
     
     pTable->blk = getNextBlockFromDownstreamRemain(pCtx->pJoin->pOperator, pTable->downStreamIdx);
     qDebug("%s merge join %s table got block to skip eq ts, rows:%" PRId64, GET_TASKID(pCtx->pJoin->pOperator->pTaskInfo), MJOIN_TBTYPE(pTable->type), pTable->blk ? pTable->blk->info.rows : 0);
@@ -2374,7 +2357,7 @@ int32_t mAsofGreaterProcessEqualGrp(SMJoinWindowCtx* pCtx, int64_t timestamp, bo
 
   pCtx->lastEqGrp = true;
 
-  MJ_ERR_RET(mAsofJoinBuildEqGrp(pJoin->probe, timestamp, NULL, &pCtx->probeGrp));
+  MJ_ERR_RET(mJoinBuildEqGrp(pJoin->probe, timestamp, NULL, &pCtx->probeGrp));
 
   return mAsofGreaterUpdateDumpEqRows(pCtx, timestamp, lastBuildGrp);
 }
@@ -2483,7 +2466,7 @@ SSDataBlock* mAsofGreaterJoinDo(struct SOperatorInfo* pOperator) {
   blockDataCleanup(pCtx->finBlk);
 
   if (pCtx->grpRemains) {
-    MJ_ERR_JRET(mAsofGreaterDumpGrpCache(pCtx));
+    MJ_ERR_JRET(mWinJoinDumpGrpCache(pCtx));
     if (pCtx->finBlk->info.rows >= pCtx->blkThreshold) {
       return pCtx->finBlk;
     }
@@ -2560,12 +2543,40 @@ _return:
   return pCtx->finBlk;
 }
 
+static int32_t mWinJoinCloneCacheBlk(SMJoinWindowCtx* pCtx) {
+  SMJoinWinCache* pCache = &pCtx->cache;
+  int32_t grpNum = taosArrayGetSize(pCache->grps);
+  if (grpNum <= 0) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  SMJoinGrpRows* pGrp = (SMJoinGrpRows*)taosArrayGetLast(pCache->grps);
+  if (!pGrp->clonedBlk) {
+    if (0 == pGrp->beginIdx) {
+      pGrp->blk = createOneDataBlock(pGrp->blk, true);
+    } else {
+      pGrp->blk = blockDataExtractBlock(pGrp->blk, pGrp->beginIdx, pGrp->blk->info.rows - pGrp->beginIdx);
+      pGrp->endIdx -= pGrp->beginIdx;
+      pGrp->beginIdx = 0;
+      pGrp->readIdx = 0;
+    }
+    
+    pGrp->clonedBlk = true;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
 static bool mWinJoinRetrieve(SOperatorInfo* pOperator, SMJoinOperatorInfo* pJoin, SMJoinWindowCtx* pCtx) {
   bool probeGot = mJoinRetrieveImpl(pJoin, &pJoin->probe->blkRowIdx, &pJoin->probe->blk, pJoin->probe);
   bool buildGot = false;
 
   do {
     if (probeGot || MJOIN_DS_NEED_INIT(pOperator, pJoin->build)) { 
+      if (NULL == pJoin->build->blk) {
+        mWinJoinCloneCacheBlk(pCtx);
+      }
+      
       buildGot = mJoinRetrieveImpl(pJoin, &pJoin->build->blkRowIdx, &pJoin->build->blk, pJoin->build);
     }
     
@@ -2586,6 +2597,8 @@ static bool mWinJoinRetrieve(SOperatorInfo* pOperator, SMJoinOperatorInfo* pJoin
     break;
   } while (true);
 
+  pCtx->probeGrp.blk = pJoin->probe->blk;
+
   return true;
 }
 
@@ -2606,7 +2619,9 @@ int32_t mWinJoinAddWinBeginBlk(SMJoinWindowCtx* pCtx, SMJoinWinCache* pCache, SM
         pGrp->endIdx = pGrp->beginIdx;
   
         build->blk = NULL;
-        return TSDB_CODE_SUCCESS;
+        pCache->rowNum = 1;
+      } else {
+        pCache->rowNum = 0;
       }
 
       *winEnd = true;  
@@ -2614,6 +2629,8 @@ int32_t mWinJoinAddWinBeginBlk(SMJoinWindowCtx* pCtx, SMJoinWinCache* pCache, SM
     }
   }
 
+  pCache->rowNum = 0;
+
   *winEnd = false;
   return TSDB_CODE_SUCCESS;
 }
@@ -2622,35 +2639,51 @@ int32_t mWinJoinAddWinBeginBlk(SMJoinWindowCtx* pCtx, SMJoinWinCache* pCache, SM
 int32_t mWinJoinAddWinEndBlk(SMJoinWindowCtx* pCtx, SMJoinWinCache* pCache, SMJoinTableCtx* build, bool* winEnd) {
   SSDataBlock* pBlk = build->blk;
   SColumnInfoData* pCol = taosArrayGet(pBlk->pDataBlock, build->primCol->srcSlot);
+  SMJoinGrpRows grp = {.blk = pBlk, .beginIdx = build->blkRowIdx};
+
+  if (*((int64_t*)pCol->pData + build->blkRowIdx) > pCtx->winEndTs) {
+    *winEnd = true;
+    return TSDB_CODE_SUCCESS;
+  }
+
   if (*((int64_t*)pCol->pData + pBlk->info.rows - 1) <= pCtx->winEndTs) {
-    SMJoinGrpRows grp = {.blk = pBlk, .beginIdx = build->blkRowIdx};
     SMJoinGrpRows* pGrp = taosArrayPush(pCache->grps, &grp);
     
     pGrp->readIdx = pGrp->beginIdx;
     pGrp->endIdx = pBlk->info.rows - 1;
+
+    pCache->rowNum += (pGrp->endIdx - pGrp->beginIdx + 1);
+    if (pCache->rowNum >= pCtx->jLimit) {
+      pGrp->endIdx = pBlk->info.rows - 1 + pCtx->jLimit - pCache->rowNum;
+      pCache->rowNum = pCtx->jLimit;
+
+      build->blk = NULL;
+      *winEnd = true;
+      return TSDB_CODE_SUCCESS;
+    }
     
     build->blk = NULL;
     *winEnd = false;
     return TSDB_CODE_SUCCESS;
   }
 
-  SMJoinGrpRows grp = {.blk = pBlk, .beginIdx = build->blkRowIdx};
-  
-  for (; build->blkRowIdx < pBlk->info.rows; build->blkRowIdx++) {
+  for (; build->blkRowIdx < pBlk->info.rows && pCache->rowNum < pCtx->jLimit; build->blkRowIdx++) {
     if (*((int64_t*)pCol->pData + build->blkRowIdx) <= pCtx->winEndTs) {
+      pCache->rowNum++;
       continue;
     }
 
-    SMJoinGrpRows* pGrp = taosArrayPush(pCache->grps, &grp);
-    
-    pGrp->readIdx = pGrp->beginIdx;
-    pGrp->endIdx = build->blkRowIdx - 1;
-    
-    build->blk = NULL;
-    *winEnd = true;  
-    return TSDB_CODE_SUCCESS;
+    break;
   }
 
+  SMJoinGrpRows* pGrp = taosArrayPush(pCache->grps, &grp);
+  
+  pGrp->readIdx = pGrp->beginIdx;
+  pGrp->endIdx = build->blkRowIdx - 1;
+  
+  build->blk = NULL;
+  *winEnd = true;  
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -2667,19 +2700,24 @@ int32_t mWinJoinMoveWinBegin(SMJoinWindowCtx* pCtx) {
         taosArrayPopFrontBatch(pCache->grps, 1);
         grpNum--;
         i--;
+        pCache->rowNum -= (pGrp->blk->info.rows - pGrp->beginIdx);
         continue;
       }
 
+      int32_t startIdx = pGrp->beginIdx;
       for (; pGrp->beginIdx < pGrp->blk->info.rows; pGrp->beginIdx++) {
         if (*((int64_t*)pCol->pData + pGrp->beginIdx) < pCtx->winBeginTs) {
           continue;
         }
 
         if (*((int64_t*)pCol->pData + pGrp->beginIdx) <= pCtx->winEndTs) {
+          pGrp->readIdx = pGrp->beginIdx;
+          pCache->rowNum -= (pGrp->beginIdx - startIdx);
           return TSDB_CODE_SUCCESS;
         }
 
         pGrp->endIdx = pGrp->beginIdx;
+        pCache->rowNum = 0;
         TSWAP(pCache->grps, pCache->grpsQueue);
         return TSDB_CODE_SUCCESS;
       }
@@ -2687,6 +2725,7 @@ int32_t mWinJoinMoveWinBegin(SMJoinWindowCtx* pCtx) {
 
     if (NULL != pCache->grpsQueue) {
       pCache->grps = pCache->grpsQueue;
+      pCache->rowNum = 1;
       pCache->grpsQueue = NULL;
       continue;
     }
@@ -2703,6 +2742,10 @@ int32_t mWinJoinMoveWinBegin(SMJoinWindowCtx* pCtx) {
     }
   }
 
+  if (build->dsFetchDone) {
+    goto _return;
+  }
+  
   do {
     build->blk = getNextBlockFromDownstreamRemain(pCtx->pJoin->pOperator, pCtx->pJoin->build->downStreamIdx);
     qDebug("%s merge join %s table got block to start win, rows:%" PRId64, GET_TASKID(pCtx->pJoin->pOperator->pTaskInfo), MJOIN_TBTYPE(build->type), build->blk ? build->blk->info.rows : 0);
@@ -2720,6 +2763,8 @@ int32_t mWinJoinMoveWinBegin(SMJoinWindowCtx* pCtx) {
     }
   } while (true);
 
+_return:
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -2734,16 +2779,30 @@ int32_t mWinJoinMoveWinEnd(SMJoinWindowCtx* pCtx) {
   SMJoinGrpRows* pGrp = taosArrayGetLast(pCache->grps);
   SColumnInfoData* pCol = taosArrayGet(pGrp->blk->pDataBlock, pCtx->pJoin->build->primCol->srcSlot);
   if (*((int64_t*)pCol->pData + pGrp->blk->info.rows - 1) <= pCtx->winEndTs) {
-    pGrp->endIdx = pGrp->blk->info.rows - 1;
+    pCache->rowNum += pGrp->blk->info.rows - pGrp->endIdx - 1;
+    if (pCache->rowNum >= pCtx->jLimit) {
+      pGrp->endIdx = pGrp->blk->info.rows - 1 + pCtx->jLimit - pCache->rowNum;
+      pCache->rowNum = pCtx->jLimit;
+
+      return TSDB_CODE_SUCCESS;
+    } else {
+      pGrp->endIdx = pGrp->blk->info.rows - 1;
+    }
   } else {
-    for (; pGrp->endIdx < pGrp->blk->info.rows; pGrp->endIdx++) {
+    int32_t startIdx = pGrp->endIdx;
+    for (; pGrp->endIdx < pGrp->blk->info.rows && pCache->rowNum < pCtx->jLimit; pGrp->endIdx++) {
       if (*((int64_t*)pCol->pData + pGrp->endIdx) <= pCtx->winEndTs) {
+        pCache->rowNum++;
         continue;
       }
 
+      ASSERT(pGrp->endIdx > startIdx);
+      
       pGrp->endIdx--;
-      return TSDB_CODE_SUCCESS;
+      break;
     }
+
+    return TSDB_CODE_SUCCESS;
   }
 
   SMJoinTableCtx* build = pCtx->pJoin->build;
@@ -2755,7 +2814,13 @@ int32_t mWinJoinMoveWinEnd(SMJoinWindowCtx* pCtx) {
     }
   }
 
+  if (build->dsFetchDone) {
+    goto _return;
+  }
+
   do {
+    MJ_ERR_RET(mWinJoinCloneCacheBlk(pCtx));
+    
     build->blk = getNextBlockFromDownstreamRemain(pCtx->pJoin->pOperator, pCtx->pJoin->build->downStreamIdx);
     qDebug("%s merge join %s table got block to start win, rows:%" PRId64, GET_TASKID(pCtx->pJoin->pOperator->pTaskInfo), MJOIN_TBTYPE(build->type), build->blk ? build->blk->info.rows : 0);
     
@@ -2772,6 +2837,8 @@ int32_t mWinJoinMoveWinEnd(SMJoinWindowCtx* pCtx) {
     }
   } while (true);
 
+_return:
+
   return TSDB_CODE_SUCCESS;
 }
 
@@ -2784,17 +2851,14 @@ int32_t mWinJoinMoveFillWinCache(SMJoinWindowCtx* pCtx) {
 }
 
 int32_t mWinJoinDumpWinCache(SMJoinWindowCtx* pCtx) {
-  return TSDB_CODE_SUCCESS;
+  return pCtx->winProjection ? mWinJoinDumpGrpCache(pCtx) : TSDB_CODE_SUCCESS;  
 }
 
-
 SSDataBlock* mWinJoinDo(struct SOperatorInfo* pOperator) {
   SMJoinOperatorInfo* pJoin = pOperator->info;
   SMJoinWindowCtx* pCtx = &pJoin->ctx.windowCtx;
   int32_t code = TSDB_CODE_SUCCESS;
   int64_t probeTs = 0;
-  int64_t buildTs = 0;
-  SColumnInfoData* pBuildCol = NULL;
   SColumnInfoData* pProbeCol = NULL;
 
   blockDataCleanup(pCtx->finBlk);
@@ -2815,7 +2879,9 @@ SSDataBlock* mWinJoinDo(struct SOperatorInfo* pOperator) {
     MJOIN_GET_TB_COL_TS(pProbeCol, probeTs, pJoin->probe);
 
     while (!MJOIN_PROBE_TB_ROWS_DONE(pJoin->probe)) {
-      MJ_ERR_JRET(mAsofJoinBuildEqGrp(pJoin->probe, probeTs, NULL, &pCtx->probeGrp));
+      MJOIN_GET_TB_CUR_TS(pProbeCol, probeTs, pJoin->probe);
+
+      MJ_ERR_JRET(mJoinBuildEqGrp(pJoin->probe, probeTs, NULL, &pCtx->probeGrp));
       
       if (probeTs != pCtx->lastTs) {
         pCtx->lastTs = probeTs;
@@ -2829,8 +2895,6 @@ SSDataBlock* mWinJoinDo(struct SOperatorInfo* pOperator) {
       if (pCtx->finBlk->info.rows >= pCtx->blkThreshold) {
         return pCtx->finBlk;
       }
-
-      MJOIN_GET_TB_CUR_TS(pProbeCol, probeTs, pJoin->probe);
     }
   } while (true);
 
@@ -2870,11 +2934,12 @@ int32_t mJoinInitWindowCtx(SMJoinOperatorInfo* pJoin, SSortMergeJoinPhysiNode* p
   SMJoinWindowCtx* pCtx = &pJoin->ctx.windowCtx;
   
   pCtx->pJoin = pJoin;
-  pCtx->jLimit = pJoinNode->pJLimit ? ((SLimitNode*)pJoinNode->pJLimit)->limit : 1;
+  pCtx->lastTs = INT64_MIN;
 
   switch (pJoinNode->subType) {
     case JOIN_STYPE_ASOF:
       pCtx->asofOpType = pJoinNode->asofOpType;
+      pCtx->jLimit = pJoinNode->pJLimit ? ((SLimitNode*)pJoinNode->pJLimit)->limit : 1;
       pCtx->eqRowsAcq = ASOF_EQ_ROW_INCLUDED(pCtx->asofOpType);
       pCtx->lowerRowsAcq = (JOIN_TYPE_RIGHT != pJoin->joinType) ? ASOF_LOWER_ROW_INCLUDED(pCtx->asofOpType) : ASOF_GREATER_ROW_INCLUDED(pCtx->asofOpType);
       pCtx->greaterRowsAcq = (JOIN_TYPE_RIGHT != pJoin->joinType) ? ASOF_GREATER_ROW_INCLUDED(pCtx->asofOpType) : ASOF_LOWER_ROW_INCLUDED(pCtx->asofOpType);
@@ -2889,6 +2954,8 @@ int32_t mJoinInitWindowCtx(SMJoinOperatorInfo* pJoin, SSortMergeJoinPhysiNode* p
       SWindowOffsetNode* pOffsetNode = (SWindowOffsetNode*)pJoinNode->pWindowOffset;
       SValueNode* pWinBegin = (SValueNode*)pOffsetNode->pStartOffset;
       SValueNode* pWinEnd = (SValueNode*)pOffsetNode->pEndOffset;
+      pCtx->jLimit = pJoinNode->pJLimit ? ((SLimitNode*)pJoinNode->pJLimit)->limit : INT64_MAX;
+      pCtx->winProjection = true;
       pCtx->winBeginOffset = pWinBegin->datum.i;
       pCtx->winEndOffset = pWinEnd->datum.i;
       pCtx->eqRowsAcq = (pCtx->winBeginOffset <= 0 && pCtx->winEndOffset >= 0);
diff --git a/source/libs/executor/src/mergejoinoperator.c b/source/libs/executor/src/mergejoinoperator.c
index 25f3724b26..9aa305c64e 100644
--- a/source/libs/executor/src/mergejoinoperator.c
+++ b/source/libs/executor/src/mergejoinoperator.c
@@ -28,6 +28,38 @@
 #include "mergejoin.h"
 
 
+int32_t mJoinBuildEqGrp(SMJoinTableCtx* pTable, int64_t timestamp, bool* wholeBlk, SMJoinGrpRows* pGrp) {
+  SColumnInfoData* pCol = taosArrayGet(pTable->blk->pDataBlock, pTable->primCol->srcSlot);
+
+  pGrp->beginIdx = pTable->blkRowIdx;
+  pGrp->readIdx = pTable->blkRowIdx;
+
+  pTable->blkRowIdx++;
+  char* pEndVal = colDataGetNumData(pCol, pTable->blk->info.rows - 1);
+  if (timestamp != *(int64_t*)pEndVal) {
+    for (; pTable->blkRowIdx < pTable->blk->info.rows; ++pTable->blkRowIdx) {
+      char* pNextVal = colDataGetNumData(pCol, pTable->blkRowIdx);
+      if (timestamp == *(int64_t*)pNextVal) {
+        continue;
+      }
+
+      pGrp->endIdx = pTable->blkRowIdx - 1;
+      return TSDB_CODE_SUCCESS;
+    }
+  }
+
+  pGrp->endIdx = pTable->blk->info.rows - 1;
+  pTable->blkRowIdx = pTable->blk->info.rows;
+
+  if (wholeBlk) {
+    *wholeBlk = true;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
+
 void mJoinTrimKeepOneRow(SSDataBlock* pBlock, int32_t totalRows, const bool* pBoolList) {
   //  int32_t totalRows = pBlock->info.rows;
   int32_t bmLen = BitmapLen(totalRows);
@@ -1013,7 +1045,7 @@ int32_t mJoinRetrieveEqGrpRows(SOperatorInfo* pOperator, SMJoinTableCtx* pTable,
   
   mJoinBuildEqGroups(pTable, timestamp, &wholeBlk, true);
   
-  while (wholeBlk) {
+  while (wholeBlk && !pTable->dsFetchDone) {
     pTable->blk = getNextBlockFromDownstreamRemain(pOperator, pTable->downStreamIdx);
     qDebug("%s merge join %s table got block for same ts, rows:%" PRId64, GET_TASKID(pOperator->pTaskInfo), MJOIN_TBTYPE(pTable->type), pTable->blk ? pTable->blk->info.rows : 0);
 
@@ -1374,7 +1406,7 @@ int32_t mJoinSetImplFp(SMJoinOperatorInfo* pJoin) {
           pJoin->joinFp = mAntiJoinDo;
           break;
         case JOIN_STYPE_WIN:
-          //pJoin->joinFp = mWinJoinDo;
+          pJoin->joinFp = mWinJoinDo;
           break;
         default:
           break;
diff --git a/source/libs/executor/test/joinTests.cpp b/source/libs/executor/test/joinTests.cpp
index 2623b98ae1..f8263fc12c 100755
--- a/source/libs/executor/test/joinTests.cpp
+++ b/source/libs/executor/test/joinTests.cpp
@@ -3092,7 +3092,7 @@ TEST(leftAntiJoin, fullCondTest) {
 #endif
 
 #if 1
-#if 1
+#if 0
 TEST(leftAsofJoin, noCondGreaterThanTest) {
   SJoinTestParam param;
   char* caseName = "leftAsofJoin:noCondGreaterThanTest";
@@ -3120,7 +3120,7 @@ TEST(leftAsofJoin, noCondGreaterThanTest) {
 }
 #endif
 
-#if 1
+#if 0
 TEST(leftAsofJoin, noCondGreaterEqTest) {
   SJoinTestParam param;
   char* caseName = "leftAsofJoin:noCondGreaterEqTest";
@@ -3148,7 +3148,7 @@ TEST(leftAsofJoin, noCondGreaterEqTest) {
 }
 #endif
 
-#if 1
+#if 0
 TEST(leftAsofJoin, noCondEqTest) {
   SJoinTestParam param;
   char* caseName = "leftAsofJoin:noCondEqTest";
diff --git a/source/libs/nodes/src/nodesCloneFuncs.c b/source/libs/nodes/src/nodesCloneFuncs.c
index 888fbfb7ad..6a772c2718 100644
--- a/source/libs/nodes/src/nodesCloneFuncs.c
+++ b/source/libs/nodes/src/nodesCloneFuncs.c
@@ -468,6 +468,7 @@ static int32_t logicJoinCopy(const SJoinLogicNode* pSrc, SJoinLogicNode* pDst) {
   COPY_SCALAR_FIELD(joinAlgo);
   CLONE_NODE_FIELD(pWindowOffset);
   CLONE_NODE_FIELD(pJLimit);
+  CLONE_NODE_FIELD(winPrimEqCond);
   CLONE_NODE_FIELD(pPrimKeyEqCond);
   CLONE_NODE_FIELD(pColEqCond);
   CLONE_NODE_FIELD(pColOnCond);
diff --git a/source/libs/nodes/src/nodesMsgFuncs.c b/source/libs/nodes/src/nodesMsgFuncs.c
index 0f6783eab4..a4e8e74b34 100644
--- a/source/libs/nodes/src/nodesMsgFuncs.c
+++ b/source/libs/nodes/src/nodesMsgFuncs.c
@@ -1850,6 +1850,41 @@ static int32_t msgToCaseWhenNode(STlvDecoder* pDecoder, void* pObj) {
   return code;
 }
 
+enum { WINDOW_OFFSET_CODE_START_OFFSET = 1, WINDOW_OFFSET_CODE_END_OFFSET };
+
+static int32_t windowOffsetNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
+  const SWindowOffsetNode* pNode = (const SWindowOffsetNode*)pObj;
+
+  int32_t code = tlvEncodeObj(pEncoder, WINDOW_OFFSET_CODE_START_OFFSET, nodeToMsg, pNode->pStartOffset);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = tlvEncodeObj(pEncoder, WINDOW_OFFSET_CODE_END_OFFSET, nodeToMsg, pNode->pEndOffset);
+  }
+
+  return code;
+}
+
+static int32_t msgToWindowOffsetNode(STlvDecoder* pDecoder, void* pObj) {
+  SWindowOffsetNode* pNode = (SWindowOffsetNode*)pObj;
+
+  int32_t code = TSDB_CODE_SUCCESS;
+  STlv*   pTlv = NULL;
+  tlvForEach(pDecoder, pTlv, code) {
+    switch (pTlv->type) {
+      case WINDOW_OFFSET_CODE_START_OFFSET:
+        code = msgToNodeFromTlv(pTlv, (void**)&pNode->pStartOffset);
+        break;
+      case WINDOW_OFFSET_CODE_END_OFFSET:
+        code = msgToNodeFromTlv(pTlv, (void**)&pNode->pEndOffset);
+        break;
+      default:
+        break;
+    }
+  }
+
+  return code;
+}
+
+
 enum {
   PHY_NODE_CODE_OUTPUT_DESC = 1,
   PHY_NODE_CODE_CONDITIONS,
@@ -4214,6 +4249,9 @@ static int32_t specificNodeToMsg(const void* pObj, STlvEncoder* pEncoder) {
     case QUERY_NODE_CASE_WHEN:
       code = caseWhenNodeToMsg(pObj, pEncoder);
       break;
+    case QUERY_NODE_WINDOW_OFFSET:
+      code = windowOffsetNodeToMsg(pObj, pEncoder);
+      break;
     case QUERY_NODE_PHYSICAL_PLAN_TAG_SCAN:
       code = physiTagScanNodeToMsg(pObj, pEncoder);
       break;
@@ -4368,6 +4406,9 @@ static int32_t msgToSpecificNode(STlvDecoder* pDecoder, void* pObj) {
     case QUERY_NODE_CASE_WHEN:
       code = msgToCaseWhenNode(pDecoder, pObj);
       break;
+    case QUERY_NODE_WINDOW_OFFSET:
+      code = msgToWindowOffsetNode(pDecoder, pObj);
+      break;
     case QUERY_NODE_PHYSICAL_PLAN_TAG_SCAN:
       code = msgToPhysiTagScanNode(pDecoder, pObj);
       break;
diff --git a/source/libs/nodes/src/nodesUtilFuncs.c b/source/libs/nodes/src/nodesUtilFuncs.c
index d5222f9c23..007ebbeb5b 100644
--- a/source/libs/nodes/src/nodesUtilFuncs.c
+++ b/source/libs/nodes/src/nodesUtilFuncs.c
@@ -801,6 +801,9 @@ void nodesDestroyNode(SNode* pNode) {
       break;
     case QUERY_NODE_JOIN_TABLE: {
       SJoinTableNode* pJoin = (SJoinTableNode*)pNode;
+      nodesDestroyNode(pJoin->pWindowOffset);
+      nodesDestroyNode(pJoin->pJLimit);
+      nodesDestroyNode(pJoin->winPrimCond);
       nodesDestroyNode(pJoin->pLeft);
       nodesDestroyNode(pJoin->pRight);
       nodesDestroyNode(pJoin->pOnCond);
@@ -1260,6 +1263,7 @@ void nodesDestroyNode(SNode* pNode) {
       destroyLogicNode((SLogicNode*)pLogicNode);
       nodesDestroyNode(pLogicNode->pWindowOffset);
       nodesDestroyNode(pLogicNode->pJLimit);
+      nodesDestroyNode(pLogicNode->winPrimEqCond);
       nodesDestroyNode(pLogicNode->pPrimKeyEqCond);
       nodesDestroyNode(pLogicNode->pColEqCond);
       nodesDestroyNode(pLogicNode->pColOnCond);
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 312bc60ea9..06f827c985 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -3158,6 +3158,55 @@ static int32_t replaceTbName(STranslateContext* pCxt, SSelectStmt* pSelect) {
   return pRewriteCxt.errCode;
 }
 
+static int32_t addPrimEqCond(SNode** pCond, SRealTableNode* leftTable, SRealTableNode* rightTable) {
+  struct STableMeta* pLMeta = leftTable->pMeta;
+  struct STableMeta* pRMeta = rightTable->pMeta;
+
+  *pCond = nodesMakeNode(QUERY_NODE_OPERATOR);
+  if (NULL == *pCond) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  SOperatorNode* pOp = (SOperatorNode*)*pCond;
+  pOp->node.resType.type = TSDB_DATA_TYPE_BOOL;
+  pOp->node.resType.bytes = tDataTypes[TSDB_DATA_TYPE_BOOL].bytes;
+  pOp->opType = OP_TYPE_EQUAL;
+
+  SColumnNode* pLeft = (SColumnNode*)nodesMakeNode(QUERY_NODE_COLUMN);
+  if (NULL == pLeft) {
+    nodesDestroyNode(*pCond);
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  pLeft->node.resType.type = pLMeta->schema[0].type;
+  pLeft->node.resType.bytes = pLMeta->schema[0].bytes;
+  pLeft->tableId = pLMeta->uid;
+  pLeft->colId = pLMeta->schema[0].colId;
+  pLeft->colType = COLUMN_TYPE_COLUMN;
+  strcpy(pLeft->tableName, leftTable->table.tableName);
+  strcpy(pLeft->tableAlias, leftTable->table.tableAlias);
+  strcpy(pLeft->colName, pLMeta->schema[0].name);
+
+  pOp->pLeft = (SNode*)pLeft;
+
+  SColumnNode* pRight = (SColumnNode*)nodesMakeNode(QUERY_NODE_COLUMN);
+  if (NULL == pRight) {
+    nodesDestroyNode(*pCond);
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  pRight->node.resType.type = pRMeta->schema[0].type;
+  pRight->node.resType.bytes = pRMeta->schema[0].bytes;
+  pRight->tableId = pRMeta->uid;
+  pRight->colId = pRMeta->schema[0].colId;
+  pRight->colType = COLUMN_TYPE_COLUMN;
+  strcpy(pRight->tableName, rightTable->table.tableName);
+  strcpy(pRight->tableAlias, rightTable->table.tableAlias);
+  strcpy(pRight->colName, pRMeta->schema[0].name);
+
+  pOp->pRight = (SNode*)pRight;
+
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t checkJoinTable(STranslateContext* pCxt, SJoinTableNode* pJoinTable) {
   if ((QUERY_NODE_TEMP_TABLE == nodeType(pJoinTable->pLeft) &&
        !isGlobalTimeLineQuery(((STempTableNode*)pJoinTable->pLeft)->pSubquery)) ||
@@ -3166,6 +3215,28 @@ static int32_t checkJoinTable(STranslateContext* pCxt, SJoinTableNode* pJoinTabl
     return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_NOT_SUPPORT_JOIN,
                                    "Join requires valid time series input");
   }
+  
+  if (JOIN_STYPE_WIN == pJoinTable->subType) {
+    if (QUERY_NODE_REAL_TABLE != nodeType(pJoinTable->pLeft) || QUERY_NODE_REAL_TABLE != nodeType(pJoinTable->pRight)) {
+      return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_NOT_SUPPORT_JOIN,
+                                     "Only support WINDOW join between tables");
+    }
+
+    SRealTableNode* pLeft = (SRealTableNode*)pJoinTable->pLeft;
+    if (TSDB_SUPER_TABLE != pLeft->pMeta->tableType && TSDB_CHILD_TABLE != pLeft->pMeta->tableType && TSDB_NORMAL_TABLE != pLeft->pMeta->tableType) {
+      return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_NOT_SUPPORT_JOIN,
+                                     "Unsupported WINDOW join table type");
+    }
+
+    SRealTableNode* pRight = (SRealTableNode*)pJoinTable->pRight;
+    if (TSDB_SUPER_TABLE != pRight->pMeta->tableType && TSDB_CHILD_TABLE != pRight->pMeta->tableType && TSDB_NORMAL_TABLE != pRight->pMeta->tableType) {
+      return generateSyntaxErrMsgExt(&pCxt->msgBuf, TSDB_CODE_PAR_NOT_SUPPORT_JOIN,
+                                     "Unsupported WINDOW join table type");
+    }    
+
+    return addPrimEqCond(&pJoinTable->winPrimCond, pLeft, pRight);
+  }
+  
   return TSDB_CODE_SUCCESS;
 }
 
diff --git a/source/libs/planner/src/planLogicCreater.c b/source/libs/planner/src/planLogicCreater.c
index 3f36be2e0a..125ddb3c1c 100644
--- a/source/libs/planner/src/planLogicCreater.c
+++ b/source/libs/planner/src/planLogicCreater.c
@@ -277,21 +277,24 @@ static EScanType getScanType(SLogicPlanContext* pCxt, SNodeList* pScanPseudoCols
   return SCAN_TYPE_TABLE;
 }
 
-static SNode* createFirstCol(uint64_t tableId, const SSchema* pSchema) {
+static SNode* createFirstCol(SRealTableNode* pTable) {
   SColumnNode* pCol = (SColumnNode*)nodesMakeNode(QUERY_NODE_COLUMN);
   if (NULL == pCol) {
     return NULL;
   }
+  SSchema* pSchema = pTable->pMeta->schema;
   pCol->node.resType.type = pSchema->type;
   pCol->node.resType.bytes = pSchema->bytes;
-  pCol->tableId = tableId;
+  pCol->tableId = pTable->pMeta->uid;
   pCol->colId = pSchema->colId;
   pCol->colType = COLUMN_TYPE_COLUMN;
+  strcpy(pCol->tableAlias, pTable->table.tableAlias);
+  strcpy(pCol->tableName, pTable->table.tableName);
   strcpy(pCol->colName, pSchema->name);
   return (SNode*)pCol;
 }
 
-static int32_t addPrimaryKeyCol(uint64_t tableId, const SSchema* pSchema, SNodeList** pCols) {
+static int32_t addPrimaryKeyCol(SRealTableNode* pTable, SNodeList** pCols) {
   bool   found = false;
   SNode* pCol = NULL;
   FOREACH(pCol, *pCols) {
@@ -302,23 +305,23 @@ static int32_t addPrimaryKeyCol(uint64_t tableId, const SSchema* pSchema, SNodeL
   }
 
   if (!found) {
-    return nodesListMakeStrictAppend(pCols, createFirstCol(tableId, pSchema));
+    return nodesListMakeStrictAppend(pCols, createFirstCol(pTable));
   }
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t addSystableFirstCol(uint64_t tableId, const SSchema* pSchema, SNodeList** pCols) {
+static int32_t addSystableFirstCol(SRealTableNode* pTable, SNodeList** pCols) {
   if (LIST_LENGTH(*pCols) > 0) {
     return TSDB_CODE_SUCCESS;
   }
-  return nodesListMakeStrictAppend(pCols, createFirstCol(tableId, pSchema));
+  return nodesListMakeStrictAppend(pCols, createFirstCol(pTable));
 }
 
-static int32_t addDefaultScanCol(const STableMeta* pMeta, SNodeList** pCols) {
-  if (TSDB_SYSTEM_TABLE == pMeta->tableType) {
-    return addSystableFirstCol(pMeta->uid, pMeta->schema, pCols);
+static int32_t addDefaultScanCol(SRealTableNode* pTable, SNodeList** pCols) {
+  if (TSDB_SYSTEM_TABLE == pTable->pMeta->tableType) {
+    return addSystableFirstCol(pTable, pCols);
   }
-  return addPrimaryKeyCol(pMeta->uid, pMeta->schema, pCols);
+  return addPrimaryKeyCol(pTable, pCols);
 }
 
 static int32_t makeScanLogicNode(SLogicPlanContext* pCxt, SRealTableNode* pRealTable, bool hasRepeatScanFuncs,
@@ -458,7 +461,7 @@ static int32_t createScanLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
   }
 
   if (TSDB_CODE_SUCCESS == code && needScanDefaultCol(pScan->scanType)) {
-    code = addDefaultScanCol(pRealTable->pMeta, &pScan->pScanCols);
+    code = addDefaultScanCol(pRealTable, &pScan->pScanCols);
   }
 
   if (TSDB_CODE_SUCCESS == code && NULL != pSelect->pTags && NULL == pSelect->pPartitionByList) {
@@ -545,6 +548,7 @@ static int32_t createJoinLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
   pJoin->isLowLevelJoin = pJoinTable->isLowLevelJoin;
   pJoin->pWindowOffset = nodesCloneNode(pJoinTable->pWindowOffset);
   pJoin->pJLimit = nodesCloneNode(pJoinTable->pJLimit);
+  pJoin->winPrimEqCond = nodesCloneNode(pJoinTable->winPrimCond);
   pJoin->node.pChildren = nodesMakeList();
   if (NULL == pJoin->node.pChildren) {
     code = TSDB_CODE_OUT_OF_MEMORY;
diff --git a/source/libs/planner/src/planOptimizer.c b/source/libs/planner/src/planOptimizer.c
index b268189865..de889f9948 100644
--- a/source/libs/planner/src/planOptimizer.c
+++ b/source/libs/planner/src/planOptimizer.c
@@ -1196,7 +1196,13 @@ static int32_t pdcJoinCheckAllCond(SOptimizeContext* pCxt, SJoinLogicNode* pJoin
     if (errCond) {
       return generateUsageErrMsg(pCxt->pPlanCxt->pMsg, pCxt->pPlanCxt->msgLen, TSDB_CODE_PLAN_NOT_SUPPORT_JOIN_COND);
     }
+    if (IS_WINDOW_JOIN(pJoin->subType)) {
+      return TSDB_CODE_SUCCESS;
+    }
+    
     return generateUsageErrMsg(pCxt->pPlanCxt->pMsg, pCxt->pPlanCxt->msgLen, TSDB_CODE_PLAN_EXPECTED_TS_EQUAL);
+  } else if (IS_WINDOW_JOIN(pJoin->subType)) {
+    return generateUsageErrMsg(pCxt->pPlanCxt->pMsg, pCxt->pPlanCxt->msgLen, TSDB_CODE_PLAN_NOT_SUPPORT_JOIN_COND);
   }
 
   return TSDB_CODE_SUCCESS;
diff --git a/source/libs/planner/src/planPhysiCreater.c b/source/libs/planner/src/planPhysiCreater.c
index 74661f7e3e..d19aaa31de 100644
--- a/source/libs/planner/src/planPhysiCreater.c
+++ b/source/libs/planner/src/planPhysiCreater.c
@@ -914,6 +914,16 @@ static int32_t createMergeJoinPhysiNode(SPhysiPlanContext* pCxt, SNodeList* pChi
     }
   }
 
+  if (TSDB_CODE_SUCCESS == code && NULL != pJoinLogicNode->winPrimEqCond) {
+    SNode* pPrimKeyCond = NULL;
+    code = setNodeSlotId(pCxt, pLeftDesc->dataBlockId, pRightDesc->dataBlockId, pJoinLogicNode->winPrimEqCond,
+                  &pPrimKeyCond);
+    if (TSDB_CODE_SUCCESS == code) {
+      code = setColEqCond(pPrimKeyCond, pJoin->subType, pLeftDesc->dataBlockId, pRightDesc->dataBlockId, pJoin);  
+    }
+    nodesDestroyNode(pPrimKeyCond);
+  }
+
   if (TSDB_CODE_SUCCESS == code) {
     code = setListSlotId(pCxt, pLeftDesc->dataBlockId, pRightDesc->dataBlockId, pJoinLogicNode->node.pTargets,
                          &pJoin->pTargets);
diff --git a/tests/script/tsim/join/join.sim b/tests/script/tsim/join/join.sim
index 4eef250433..5a883f4612 100644
--- a/tests/script/tsim/join/join.sim
+++ b/tests/script/tsim/join/join.sim
@@ -67,6 +67,7 @@ run tsim/join/left_anti_join.sim
 run tsim/join/right_anti_join.sim
 run tsim/join/left_asof_join.sim
 run tsim/join/right_asof_join.sim
+run tsim/join/left_win_join.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
@@ -83,5 +84,6 @@ run tsim/join/left_anti_join.sim
 run tsim/join/right_anti_join.sim
 run tsim/join/left_asof_join.sim
 run tsim/join/right_asof_join.sim
+run tsim/join/left_win_join.sim
 
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
diff --git a/tests/script/tsim/join/left_win_join.sim b/tests/script/tsim/join/left_win_join.sim
new file mode 100644
index 0000000000..0ce5592d55
--- /dev/null
+++ b/tests/script/tsim/join/left_win_join.sim
@@ -0,0 +1,168 @@
+sql connect
+sql use test0;
+
+sql_error select a.col1, b.col1 from sta a left window join sta b on a.ts = b.ts and a.ts < '2023-11-17 16:29:02' and b.ts < '2023-11-17 16:29:01' window_offset(-1s, 1s) order by a.col1, b.col1;
+sql_error select a.col1, b.col1 from sta a left window join sta b on a.ts = b.ts order by a.col1, b.col1;
+sql_error select a.col1, b.col1 from sta a left window join sta b on a.ts = b.ts window_offset(-1s, 1s) order by a.col1, b.col1;
+sql select a.col1, b.col1 from sta a left window join sta b window_offset(-1s, 1s) order by a.col1, b.col1;
+if $rows != 28 then
+  return -1
+endi
+sql select a.col1, b.col1 from sta a left window join sta b window_offset(-1s, 1s) jlimit 2 order by a.col1, b.col1;
+if $rows != 16 then
+  return -1
+endi
+sql select a.col1, b.col1 from sta a left window join sta b window_offset(1s, 1s) order by a.col1, b.col1;
+if $rows != 9 then
+  return -1
+endi
+sql select a.col1, b.col1 from sta a left window join sta b window_offset(-1s, 1s) where a.ts < '2023-11-17 16:29:02' and b.ts < '2023-11-17 16:29:01' order by a.col1, b.col1;
+if $rows != 6 then
+  return -1
+endi
+if $data00 != 1 then
+  return -1
+endi
+if $data01 != 1 then
+  return -1
+endi
+if $data10 != 1 then
+  return -1
+endi
+if $data11 != 2 then
+  return -1
+endi
+if $data20 != 2 then
+  return -1
+endi
+if $data21 != 1 then
+  return -1
+endi
+if $data30 != 2 then
+  return -1
+endi
+if $data31 != 2 then
+  return -1
+endi
+if $data40 != 3 then
+  return -1
+endi
+if $data41 != 1 then
+  return -1
+endi
+if $data50 != 3 then
+  return -1
+endi
+if $data51 != 2 then
+  return -1
+endi
+
+sql select a.ts, b.ts from tba1 a left window join tba2 b window_offset(-1s, 1s)
+if $rows != 7 then
+  return -1
+endi
+if $data00 != @23-11-17 16:29:00.000@ then
+  return -1
+endi
+if $data01 != @23-11-17 16:29:00.000@ then
+  return -1
+endi
+if $data10 != @23-11-17 16:29:00.000@ then
+  return -1
+endi
+if $data11 != @23-11-17 16:29:01.000@ then
+  return -1
+endi
+if $data20 != @23-11-17 16:29:02.000@ then
+  return -1
+endi
+if $data21 != @23-11-17 16:29:01.000@ then
+  return -1
+endi
+if $data30 != @23-11-17 16:29:02.000@ then
+  return -1
+endi
+if $data31 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data40 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data41 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data50 != @23-11-17 16:29:04.000@ then
+  return -1
+endi
+if $data51 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data60 != @23-11-17 16:29:04.000@ then
+  return -1
+endi
+if $data61 != @23-11-17 16:29:05.000@ then
+  return -1
+endi
+
+sql select a.ts, b.ts from tba1 a left window join tba2 b window_offset(-1s, 1s) jlimit 1;
+if $rows != 4 then
+  return -1
+endi
+if $data00 != @23-11-17 16:29:00.000@ then
+  return -1
+endi
+if $data01 != @23-11-17 16:29:00.000@ then
+  return -1
+endi
+if $data10 != @23-11-17 16:29:02.000@ then
+  return -1
+endi
+if $data11 != @23-11-17 16:29:01.000@ then
+  return -1
+endi
+if $data20 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data21 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data30 != @23-11-17 16:29:04.000@ then
+  return -1
+endi
+if $data31 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+
+sql select a.ts, b.ts from tba1 a left window join tba2 b window_offset(-1a, 1a) jlimit 1;
+if $rows != 4 then
+  return -1
+endi
+if $data00 != @23-11-17 16:29:00.000@ then
+  return -1
+endi
+if $data01 != @23-11-17 16:29:00.000@ then
+  return -1
+endi
+if $data10 != @23-11-17 16:29:02.000@ then
+  return -1
+endi
+if $data11 != NULL then
+  return -1
+endi
+if $data20 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data21 != @23-11-17 16:29:03.000@ then
+  return -1
+endi
+if $data30 != @23-11-17 16:29:04.000@ then
+  return -1
+endi
+if $data31 != NULL then
+  return -1
+endi
+
+sql select a.ts, b.ts from tba1 a left window join tba2 b window_offset(-1h, 1h);
+if $rows != 16 then
+  return -1
+endi