enh: support passing params between nodes

include/common/tmsg.h

@@ -1842,13 +1842,32 @@ typedef struct {
   int32_t tversion;
 } SResReadyRsp;
 
+typedef struct SOperatorSpecParam {
+  int32_t         opType;
+  void*           value;
+} SOperatorSpecParam;
+
+typedef struct SOperatorBaseParam {
+  SOperatorParam* pChild;
+} SOperatorBaseParam;
+
+typedef struct SOperatorParam {
+  SArray*             pOpParams; //SArray<SOperatorSpecParam>
+} SOperatorParam;
+
+typedef struct STableScanOperatorParam {
+  SOperatorParam*     pChild;
+  SArray*             pUidList;
+} STableScanOperatorParam;
+
+
 typedef struct {
-  SMsgHead header;
+  SMsgHead        header;
-  uint64_t sId;
+  uint64_t        sId;
-  uint64_t queryId;
+  uint64_t        queryId;
-  uint64_t taskId;
+  uint64_t        taskId;
-  int32_t  execId;
+  int32_t         execId;
-  void*    opParam;
+  SOperatorParam* pOpParam;
 } SResFetchReq;
 
 int32_t tSerializeSResFetchReq(void* buf, int32_t bufLen, SResFetchReq* pReq);

include/libs/executor/executor.h

@@ -132,6 +132,8 @@ int32_t qSetSMAInput(qTaskInfo_t tinfo, const void* pBlocks, size_t numOfBlocks,
  */
 int32_t qUpdateTableListForStreamScanner(qTaskInfo_t tinfo, const SArray* tableIdList, bool isAdd);
 
+bool   qIsDynamicExecTask(qTaskInfo_t tinfo);
+
 /**
  * Create the exec task object according to task json
  * @param readHandle

source/common/src/tmsg.c

@@ -5499,6 +5499,78 @@ void tFreeSSubQueryMsg(SSubQueryMsg *pReq) {
   taosMemoryFreeClear(pReq->msg);
 }
 
+int32_t tSerializeSOperatorParam(SEncoder* pEncoder, SOperatorParam* pOpParam) {
+  int32_t n = taosArrayGetSize(pOpParam->pOpParams);
+  if (tEncodeI32(pEncoder, n) < 0) return -1;
+  for (int32_t i = 0; i < n; ++i) {
+    SOperatorSpecParam* pSpec = (SOperatorSpecParam*)taosArrayGet(pOpParam->pOpParams, i);
+    if (tEncodeI32(pEncoder, pSpec->opType) < 0) return -1;
+    switch (pSpec->opType) {
+      case QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN: {
+        STableScanOperatorParam* pScan = (STableScanOperatorParam*)pSpec->value;
+        if (pScan->pChild) {
+          if (tSerializeSOperatorParam(pEncoder, pScan->pChild) < 0) return -1;
+        } else {
+          if (tEncodeI32(pEncoder, 0) < 0) return -1;
+        }
+        int32_t uidNum = taosArrayGetSize(pScan->pUidList);
+        if (tEncodeI32(pEncoder, uidNum) < 0) return -1;
+        for (int32_t m = 0; m < uidNum; ++m) {
+          int64_t* pUid = taosArrayGet(pScan->pUidList, m);
+          if (tEncodeI64(pEncoder, *pUid) < 0) return -1;
+        }
+        break;
+      }
+      default:
+        return TSDB_CODE_INVALID_PARA;
+    }
+  }
+
+  return 0;
+}
+
+int32_t tDeserializeSOperatorParam(SDecoder *pDecoder, SOperatorParam* pOpParam, int32_t specNum) {
+  pOpParam->pOpParams = taosArrayInit(specNum, sizeof(SOperatorSpecParam))
+  if (NULL == pOpParam->pOpParams) return -1;
+
+  SOperatorSpecParam specParam;
+  for (int32_t i = 0; i < specNum; ++i) {
+    if (tDecodeI32(pDecoder, &specParam.opType) < 0) return -1;
+    switch (specParam.opType) {
+      case QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN: {
+        STableScanOperatorParam* pScan = taosMemoryMalloc(sizeof(STableScanOperatorParam));
+        if (NULL == pScan) return -1;
+        int32_t childSpecNum = 0;
+        if (tDecodeI32(pDecoder, &childSpecNum) < 0) return -1;
+        if (childSpecNum > 0) {
+          pScan->pChild = taosMemoryMalloc(sizeof(SOperatorParam));
+          if (NULL == pScan->pChild) return -1;
+          if (tDeserializeSOperatorParam(pDecoder, pScan->pChild, childSpecNum) < 0) return -1;
+        }
+        int32_t uidNum = 0;
+        int64_t uid = 0;
+        if (tDecodeI32(pDecoder, &uidNum) < 0) return -1;
+        if (uidNum > 0) {
+          pScan->pUidList = taosArrayInit(uidNum, sizeof(int64_t));
+          if (NULL == pScan->pUidList) return -1;
+          for (int32_t m = 0; m < uidNum; ++m) {
+            if (tDecodeI64(pDecoder, &uid) < 0) return -1;
+            taosArrayPush(pScan->pUidList, &uid);
+          }
+        }
+        specParam.value = pScan;
+        break;
+      }
+      default:
+        return TSDB_CODE_INVALID_PARA;
+    }
+    taosArrayPush(pOpParam->pOpParams, &specParam);
+  }
+
+  return 0;
+}
+
+
 int32_t tSerializeSResFetchReq(void *buf, int32_t bufLen, SResFetchReq *pReq) {
   int32_t headLen = sizeof(SMsgHead);
   if (buf != NULL) {
@@ -5514,6 +5586,11 @@ int32_t tSerializeSResFetchReq(void *buf, int32_t bufLen, SResFetchReq *pReq) {
   if (tEncodeU64(&encoder, pReq->queryId) < 0) return -1;
   if (tEncodeU64(&encoder, pReq->taskId) < 0) return -1;
   if (tEncodeI32(&encoder, pReq->execId) < 0) return -1;
+  if (pReq->pOpParam) {
+    if (tSerializeSOperatorParam(&encoder, pReq->pOpParam) < 0) return -1;
+  } else {
+    if (tEncodeI32(&encoder, 0) < 0) return -1;
+  }
 
   tEndEncode(&encoder);
 
@@ -5546,6 +5623,14 @@ int32_t tDeserializeSResFetchReq(void *buf, int32_t bufLen, SResFetchReq *pReq)
   if (tDecodeU64(&decoder, &pReq->taskId) < 0) return -1;
   if (tDecodeI32(&decoder, &pReq->execId) < 0) return -1;
 
+  int32_t specNum = 0;
+  if (tDecodeI32(&decoder, &specNum) < 0) return -1;
+  if (specNum > 0) {
+    pReq->pOpParam = taosMemoryMalloc(sizeof(*pReq->pOpParam));
+    if (NULL == pReq->pOpParam) return -1;
+    if (tDeserializeSOperatorParam(&decoder, pReq->pOpParam, specNum) < 0) return -1;
+  }
+  
   tEndDecode(&decoder);
 
   tDecoderClear(&decoder);

source/libs/executor/inc/executorInt.h

@@ -146,6 +146,7 @@ typedef struct SSortMergeJoinOperatorParam {
 typedef struct SExchangeOperatorParam {
   SOperatorParam* pChild;
   int32_t         vgId;
+  int32_t         srcOpType;
   SArray*         uidList;
 } SExchangeOperatorParam;
 

source/libs/executor/inc/operator.h

@@ -27,19 +27,6 @@ typedef struct SOperatorCostInfo {
 
 struct SOperatorInfo;
 
-typedef struct SOperatorSpecParam {
-  int32_t         opType;
-  void*           value;
-} SOperatorSpecParam;
-
-typedef struct SOperatorBaseParam {
-  SOperatorParam* pChild;
-} SOperatorBaseParam;
-
-typedef struct SOperatorParam {
-  SArray*             pOpParams; //SArray<SOperatorSpecParam>
-} SOperatorParam;
-
 typedef int32_t (*__optr_encode_fn_t)(struct SOperatorInfo* pOperator, char** result, int32_t* length);
 typedef int32_t (*__optr_decode_fn_t)(struct SOperatorInfo* pOperator, char* result);
 

source/libs/executor/inc/querytask.h

@@ -94,6 +94,9 @@ struct SExecTaskInfo {
   STaskStopInfo         stopInfo;
   SRWLatch              lock;  // secure the access of STableListInfo
   SStorageAPI           storageAPI;
+  int8_t                dynamicTask;
+  SOperatorParam*       pOpParam;
+  bool                  paramSet;
 };
 
 void           buildTaskId(uint64_t taskId, uint64_t queryId, char* dst);

source/libs/executor/src/dynqueryctrloperator.c

@@ -49,6 +49,7 @@ static FORCE_INLINE int32_t buildGroupCacheOperatorParam(SOperatorParam** ppRes,
     return TSDB_CODE_OUT_OF_MEMORY;
   }
 
+  pGc->pChild = pChild;
   pGc->sessionId = atomic_add_fetch_64(&gSessionId, 1);
   pGc->downstreamIdx = downstreamIdx;
   pGc->needCache = needCache;

source/libs/executor/src/exchangeoperator.c

@@ -40,7 +40,8 @@ typedef struct SSourceDataInfo {
   int32_t            code;
   EX_SOURCE_STATUS   status;
   const char*        taskId;
-  SArray*            pUidList;
+  SArray*            pSrcUidList;
+  int32_t            srcOpType;
 } SSourceDataInfo;
 
 static void  destroyExchangeOperatorInfo(void* param);
@@ -416,6 +417,37 @@ int32_t loadRemoteDataCallback(void* param, SDataBuf* pMsg, int32_t code) {
   return code;
 }
 
+int32_t buildTableScanOperatorParam(SOperatorParam** ppRes, SArray* pUidList, int32_t srcOpType) {
+  *ppRes = taosMemoryMalloc(sizeof(SOperatorParam));
+  if (NULL == *ppRes) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  (*ppRes)->pOpParams = taosArrayInit(1, sizeof(SOperatorSpecParam));
+  if (NULL == *ppRes) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  STableScanOperatorParam* pScan = taosMemoryMalloc(sizeof(STableScanOperatorParam));
+  if (NULL == pScan) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  pScan->pChild = NULL;
+  pScan->pUidList = taosArrayDup(pUidList, NULL);
+  if (NULL == pScan->pUidList) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+  
+  SOperatorSpecParam specParam;
+  specParam.opType = srcOpType;
+  specParam.value = pScan;
+
+  taosArrayPush((*ppRes)->pOpParams, &specParam);
+
+  return TSDB_CODE_SUCCESS;
+}
+
+
 int32_t doSendFetchDataRequest(SExchangeInfo* pExchangeInfo, SExecTaskInfo* pTaskInfo, int32_t sourceIndex) {
   SSourceDataInfo*       pDataInfo = taosArrayGet(pExchangeInfo->pSourceDataInfo, sourceIndex);
   if (EX_SOURCE_DATA_NOT_READY != pDataInfo->status) {
@@ -445,10 +477,15 @@ int32_t doSendFetchDataRequest(SExchangeInfo* pExchangeInfo, SExecTaskInfo* pTas
     req.taskId = pSource->taskId;
     req.queryId = pTaskInfo->id.queryId;
     req.execId = pSource->execId;
-    if (pDataInfo->pUidList) {
+    if (pDataInfo->pSrcUidList) {
-      req.opParam = buildTableScanOperatorParam(pDataInfo->pUidList);
+      int32_t code = buildTableScanOperatorParam(&req.opParam, pDataInfo->pSrcUidList, pDataInfo->srcOpType);
+      if (TSDB_CODE_SUCCESS != code) {
+        pTaskInfo->code = code;
+        taosMemoryFree(pWrapper);
+        return pTaskInfo->code;
+      }
     }
-
+    
     int32_t msgSize = tSerializeSResFetchReq(NULL, 0, &req);
     if (msgSize < 0) {
       pTaskInfo->code = TSDB_CODE_OUT_OF_MEMORY;
@@ -726,7 +763,8 @@ int32_t addDynamicExchangeSource(SOperatorInfo* pOperator) {
   dataInfo.status = EX_SOURCE_DATA_NOT_READY;
   dataInfo.taskId = GET_TASKID(pOperator->pTaskInfo);
   dataInfo.index = *pIdx;
-  dataInfo.pUidList = taosArrayDup(pParam->uidList, NULL);
+  dataInfo.pSrcUidList = taosArrayDup(pParam->uidList, NULL);
+  dataInfo.srcOpType = pParam->srcOpType;
   taosArrayPush(pExchangeInfo->pSourceDataInfo, &dataInfo);
 }
 

source/libs/executor/src/executor.c

@@ -512,6 +512,16 @@ int32_t qGetQueryTableSchemaVersion(qTaskInfo_t tinfo, char* dbName, char* table
   return 0;
 }
 
+bool qIsDynamicExecTask(qTaskInfo_t tinfo) {
+  return ((SExecTaskInfo*)tinfo)->dynamicTask;
+}
+
+void qUpdateOperatorParam(qTaskInfo_t tinfo, void* pParam) {
+  destroyOperatorParam(((SExecTaskInfo*)tinfo)->pOpParam);
+  ((SExecTaskInfo*)tinfo)->pOpParam = pParam;
+  ((SExecTaskInfo*)tinfo)->paramSet = false;
+}
+
 int32_t qCreateExecTask(SReadHandle* readHandle, int32_t vgId, uint64_t taskId, SSubplan* pSubplan,
                         qTaskInfo_t* pTaskInfo, DataSinkHandle* handle, char* sql, EOPTR_EXEC_MODEL model) {
   SExecTaskInfo** pTask = (SExecTaskInfo**)pTaskInfo;
@@ -602,8 +612,15 @@ int32_t qExecTaskOpt(qTaskInfo_t tinfo, SArray* pResList, uint64_t* useconds, bo
 
   int64_t st = taosGetTimestampUs();
 
+  if (pTaskInfo->pOpParam && !pTaskInfo->paramSet) {
+    pTaskInfo->paramSet = true;
+    pRes = pTaskInfo->pRoot->fpSet.getNextExtFn(pTaskInfo->pRoot, pTaskInfo->pOpParam);
+  } else {
+    pRes = pTaskInfo->pRoot->fpSet.getNextFn(pTaskInfo->pRoot);
+  }
+  
   int32_t blockIndex = 0;
-  while ((pRes = pTaskInfo->pRoot->fpSet.getNextFn(pTaskInfo->pRoot)) != NULL) {
+  while (pRes != NULL) {
     SSDataBlock* p = NULL;
     if (blockIndex >= taosArrayGetSize(pTaskInfo->pResultBlockList)) {
       SSDataBlock* p1 = createOneDataBlock(pRes, true);
@@ -623,6 +640,8 @@ int32_t qExecTaskOpt(qTaskInfo_t tinfo, SArray* pResList, uint64_t* useconds, bo
     if (current >= 4096) {
       break;
     }
+
+    pRes = pTaskInfo->pRoot->fpSet.getNextFn(pTaskInfo->pRoot);
   }
 
   *hasMore = (pRes != NULL);

source/libs/executor/src/operator.c

@@ -96,7 +96,7 @@ int32_t optrDefaultBufFn(SOperatorInfo* pOperator) {
 
 SSDataBlock* optrDefaultGetNextExtFn(struct SOperatorInfo* pOperator, SOperatorParam* pParam) {
   pOperator->pOperatorParam = getOperatorParam(pOperator->operatorType, pParam, 0);
-  int32_t code = setOperatorParams(pOperator, pOperator->pOperatorParam ? pOperator->pOperatorParam->pChild : NULL);
+  int32_t code = setOperatorParams(pOperator, pOperator->pOperatorParam ? pOperator->pOperatorParam->pChild : pParam);
   if (TSDB_CODE_SUCCESS != code) {
     pOperator->pTaskInfo->code = code;
     T_LONG_JMP(pOperator->pTaskInfo->env, pOperator->pTaskInfo->code);
@@ -292,7 +292,6 @@ SOperatorInfo* createOperator(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, SR
     SOperatorInfo* pOperator = NULL;
     if (QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN == type) {
       STableScanPhysiNode* pTableScanNode = (STableScanPhysiNode*)pPhyNode;
-
       // NOTE: this is an patch to fix the physical plan
       // TODO remove it later
       if (pTableScanNode->scan.node.pLimit != NULL) {
@@ -300,21 +299,25 @@ SOperatorInfo* createOperator(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo, SR
       }
 
       STableListInfo* pTableListInfo = tableListCreate();
-      int32_t         code =
+
-          createScanTableListInfo(&pTableScanNode->scan, pTableScanNode->pGroupTags, pTableScanNode->groupSort, pHandle,
+      int32_t code = initQueriedTableSchemaInfo(pHandle, &pTableScanNode->scan, dbname, pTaskInfo);
-                                  pTableListInfo, pTagCond, pTagIndexCond, pTaskInfo);
       if (code) {
         pTaskInfo->code = code;
         tableListDestroy(pTableListInfo);
-        qError("failed to createScanTableListInfo, code:%s, %s", tstrerror(code), idstr);
         return NULL;
       }
 
-      code = initQueriedTableSchemaInfo(pHandle, &pTableScanNode->scan, dbname, pTaskInfo);
+      if (pTableScanNode->scan.node.dynamicOp) {
-      if (code) {
+        pTaskInfo->dynamicTask = true;
-        pTaskInfo->code = code;
+      } else {
-        tableListDestroy(pTableListInfo);
+        code = createScanTableListInfo(&pTableScanNode->scan, pTableScanNode->pGroupTags, pTableScanNode->groupSort, pHandle,
-        return NULL;
+                                    pTableListInfo, pTagCond, pTagIndexCond, pTaskInfo);
+        if (code) {
+          pTaskInfo->code = code;
+          tableListDestroy(pTableListInfo);
+          qError("failed to createScanTableListInfo, code:%s, %s", tstrerror(code), idstr);
+          return NULL;
+        }
       }
 
       pOperator = createTableScanOperatorInfo(pTableScanNode, pHandle, pTableListInfo, pTaskInfo);
@@ -659,4 +662,10 @@ FORCE_INLINE SSDataBlock* getNextBlockFromDownstream(struct SOperatorInfo* pOper
   return pOperator->pDownstream[idx]->fpSet.getNextFn(pOperator->pDownstream[idx]);
 }
 
+void destroyOperatorParam(SOperatorParam* pParam) {
+  if (NULL == pParam) {
+    return;
+  }
+}
+
 

source/libs/executor/src/scanoperator.c

@@ -784,11 +784,23 @@ static SSDataBlock* doGroupedTableScan(SOperatorInfo* pOperator) {
   return NULL;
 }
 
+static int32_t createTableListInfoFromParam(STableScanInfo* pInfo, STableScanOperatorParam* pParam) {
+
+}
+
 static SSDataBlock* doTableScan(SOperatorInfo* pOperator) {
   STableScanInfo* pInfo = pOperator->info;
   SExecTaskInfo*  pTaskInfo = pOperator->pTaskInfo;
   SStorageAPI*    pAPI = &pTaskInfo->storageAPI;
 
+  if (pOperator->pOperatorParam) {
+    int32_t code = createTableListInfoFromParam(pInfo, (STableScanOperatorParam*)pOperator->pOperatorParam);
+    if (code != TSDB_CODE_SUCCESS) {
+      pTaskInfo->code = code;
+      T_LONG_JMP(pTaskInfo->env, code);
+    }
+  }
+
   // scan table one by one sequentially
   if (pInfo->scanMode == TABLE_SCAN__TABLE_ORDER) {
     int32_t       numOfTables = 0;  // tableListGetSize(pTaskInfo->pTableListInfo);

source/libs/qworker/src/qwMsg.c

@@ -512,7 +512,7 @@ int32_t qWorkerProcessFetchMsg(void *node, void *qWorkerMgmt, SRpcMsg *pMsg, int
   int64_t  rId = 0;
   int32_t  eId = req.execId;
 
-  SQWMsg qwMsg = {.node = node, .msg = NULL, .msgLen = 0, .connInfo = pMsg->info, .msgType = pMsg->msgType};
+  SQWMsg qwMsg = {.node = node, .msg = req.pOpParam, .msgLen = 0, .connInfo = pMsg->info, .msgType = pMsg->msgType};
 
   QW_SCH_TASK_DLOG("processFetch start, node:%p, handle:%p", node, pMsg->info.handle);
 

source/libs/qworker/src/qwUtil.c

@@ -401,7 +401,28 @@ _return:
   QW_RET(code);
 }
 
+int32_t qwHandleDynamicTaskEnd(QW_FPARAMS_DEF) {
+  char id[sizeof(qId) + sizeof(tId) + sizeof(eId)] = {0};
+  QW_SET_QTID(id, qId, tId, eId);
+  SQWTaskCtx octx;
+
+  SQWTaskCtx *ctx = taosHashGet(mgmt->ctxHash, id, sizeof(id));
+  if (NULL == ctx) {
+    QW_TASK_DLOG_E("task ctx not exist, may be dropped");
+    QW_ERR_RET(QW_CTX_NOT_EXISTS_ERR_CODE(mgmt));
+  }
+
+  if (!qIsDynamicExecTask(ctx->taskHandle)) {
+    return TSDB_CODE_SUCCESS;
+  }
+
+  qwHandleTaskComplete(QW_FPARAMS_DEF, ctx);
+
+  return TSDB_CODE_SUCCESS;
+}
+
 int32_t qwDropTask(QW_FPARAMS_DEF) {
+  QW_ERR_RET(qwHandleDynamicTaskEnd(QW_FPARAMS()));
   QW_ERR_RET(qwDropTaskStatus(QW_FPARAMS()));
   QW_ERR_RET(qwDropTaskCtx(QW_FPARAMS()));
 

source/libs/qworker/src/qworker.c

@@ -203,15 +203,24 @@ int32_t qwExecTask(QW_FPARAMS_DEF, SQWTaskCtx *ctx, bool *queryStop) {
     }
 
     if (numOfResBlock == 0 || (hasMore == false)) {
-      if (numOfResBlock == 0) {
+      if (!qIsDynamicExecTask(taskHandle)) {
-        QW_TASK_DLOG("qExecTask end with empty res, useconds:%" PRIu64, useconds);
+        if (numOfResBlock == 0) {
+          QW_TASK_DLOG("qExecTask end with empty res, useconds:%" PRIu64, useconds);
+        } else {
+          QW_TASK_DLOG("qExecTask done, useconds:%" PRIu64, useconds);
+        }
+
+        QW_ERR_JRET(qwHandleTaskComplete(QW_FPARAMS(), ctx));
       } else {
-        QW_TASK_DLOG("qExecTask done, useconds:%" PRIu64, useconds);
+        if (numOfResBlock == 0) {
+          QW_TASK_DLOG("dyn task qExecTask end with empty res, useconds:%" PRIu64, useconds);
+        } else {
+          QW_TASK_DLOG("dyn task qExecTask done, useconds:%" PRIu64, useconds);
+        }
       }
 
       dsEndPut(sinkHandle, useconds);
-      QW_ERR_JRET(qwHandleTaskComplete(QW_FPARAMS(), ctx));
+      
-
       if (queryStop) {
         *queryStop = true;
       }
@@ -729,8 +738,11 @@ int32_t qwProcessQuery(QW_FPARAMS_DEF, SQWMsg *qwMsg, char *sql) {
   atomic_store_ptr(&ctx->sinkHandle, sinkHandle);
 
   qwSaveTbVersionInfo(pTaskInfo, ctx);
-  QW_ERR_JRET(qwExecTask(QW_FPARAMS(), ctx, NULL));
 
+  if (!qIsDynamicExecTask(pTaskInfo)) {
+    QW_ERR_JRET(qwExecTask(QW_FPARAMS(), ctx, NULL));
+  }
+  
 _return:
 
   taosMemoryFree(sql);
@@ -849,6 +861,10 @@ int32_t qwProcessFetch(QW_FPARAMS_DEF, SQWMsg *qwMsg) {
   ctx->fetchMsgType = qwMsg->msgType;
   ctx->dataConnInfo = qwMsg->connInfo;
 
+  if (qwMsg->msg) {
+    qUpdateOperatorParam(ctx->taskHandle);
+  }
+
   SOutputData sOutput = {0};
   QW_ERR_JRET(qwGetQueryResFromSink(QW_FPARAMS(), ctx, &dataLen, &rsp, &sOutput));