diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index bc5bffdb48..1057a00725 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -2063,6 +2063,7 @@ int32_t setResultDataPtr(SReqResultInfo* pResultInfo, TAOS_FIELD* pFields, int32
     tscError("setResultDataPtr paras error");
     return TSDB_CODE_TSC_INTERNAL_ERROR;
   }
+
   if (numOfRows == 0) {
     return TSDB_CODE_SUCCESS;
   }
@@ -2199,9 +2200,9 @@ int32_t setQueryResultFromRsp(SReqResultInfo* pResultInfo, const SRetrieveTableR
   pResultInfo->precision = pRsp->precision;
 
   // decompress data if needed
-  if (pRsp->compressed) {
-    int32_t payloadLen = htonl(pRsp->payloadLen);
+  int32_t payloadLen = htonl(pRsp->payloadLen);
 
+  if (pRsp->compressed) {
     if (pResultInfo->decompBuf == NULL) {
       pResultInfo->decompBuf = taosMemoryMalloc(payloadLen);
       pResultInfo->decompBufSize = payloadLen;
@@ -2220,21 +2221,23 @@ int32_t setQueryResultFromRsp(SReqResultInfo* pResultInfo, const SRetrieveTableR
     }
   }
 
-  int32_t compLen = *(int32_t*)pRsp->data;
-  int32_t rawLen = *(int32_t*)(pRsp->data + sizeof(int32_t));
+  if (payloadLen > 0) {
+    int32_t compLen = *(int32_t*)pRsp->data;
+    int32_t rawLen = *(int32_t*)(pRsp->data + sizeof(int32_t));
 
-  char* pStart = (char*)pRsp->data + sizeof(int32_t) * 2;
+    char* pStart = (char*)pRsp->data + sizeof(int32_t) * 2;
 
-  if (pRsp->compressed && compLen < rawLen) {
-    int32_t len = tsDecompressString(pStart, compLen, 1, pResultInfo->decompBuf, rawLen, ONE_STAGE_COMP, NULL, 0);
-    ASSERT(len == rawLen);
+    if (pRsp->compressed && compLen < rawLen) {
+      int32_t len = tsDecompressString(pStart, compLen, 1, pResultInfo->decompBuf, rawLen, ONE_STAGE_COMP, NULL, 0);
+      ASSERT(len == rawLen);
 
-    pResultInfo->pData = pResultInfo->decompBuf;
-    pResultInfo->payloadLen = rawLen;
-  } else {
-    pResultInfo->pData = pStart;
-    pResultInfo->payloadLen = htonl(pRsp->compLen);
-    ASSERT(pRsp->compLen == pRsp->payloadLen);
+      pResultInfo->pData = pResultInfo->decompBuf;
+      pResultInfo->payloadLen = rawLen;
+    } else {
+      pResultInfo->pData = pStart;
+      pResultInfo->payloadLen = htonl(pRsp->compLen);
+      ASSERT(pRsp->compLen == pRsp->payloadLen);
+    }
   }
 
   // TODO handle the compressed case
diff --git a/source/client/test/clientTests.cpp b/source/client/test/clientTests.cpp
index 61a97f2c24..b5bad92dc4 100644
--- a/source/client/test/clientTests.cpp
+++ b/source/client/test/clientTests.cpp
@@ -904,15 +904,15 @@ TEST(clientCase, projection_query_stables) {
   TAOS* pConn = taos_connect("localhost", "root", "taosdata", NULL, 0);
   ASSERT_NE(pConn, nullptr);
 
-  TAOS_RES* pRes = taos_query(pConn, "use abc1");
-  taos_free_result(pRes);
+  TAOS_RES* pRes = taos_query(pConn, "explain select * from dbvg.st where tbname='ct1'");
+//  taos_free_result(pRes);
 
-  pRes = taos_query(pConn, "select * from st2");
-  if (taos_errno(pRes) != 0) {
-    printf("failed to select from table, reason:%s\n", taos_errstr(pRes));
-    taos_free_result(pRes);
-    ASSERT_TRUE(false);
-  }
+//  pRes = taos_query(pConn, "select * from st2");
+//  if (taos_errno(pRes) != 0) {
+//    printf("failed to select from table, reason:%s\n", taos_errstr(pRes));
+//    taos_free_result(pRes);
+//    ASSERT_TRUE(false);
+//  }
 
   TAOS_ROW    pRow = NULL;
   TAOS_FIELD* pFields = taos_fetch_fields(pRes);
diff --git a/source/libs/command/src/explain.c b/source/libs/command/src/explain.c
index bde0b47489..3333f22e10 100644
--- a/source/libs/command/src/explain.c
+++ b/source/libs/command/src/explain.c
@@ -70,7 +70,6 @@ char* qExplainGetTimerangeTargetStr(int32_t target) {
   return targetName[target];
 }
 
-
 void qExplainFreeResNode(SExplainResNode *resNode) {
   if (NULL == resNode) {
     return;
@@ -1942,7 +1941,7 @@ int32_t qExplainGetRspFromCtx(void *ctx, SRetrieveTableRsp **pRsp) {
 
   pBlock->info.rows = rowNum;
 
-  int32_t rspSize = sizeof(SRetrieveTableRsp) + blockGetEncodeSize(pBlock);
+  int32_t rspSize = sizeof(SRetrieveTableRsp) + blockGetEncodeSize(pBlock) + sizeof(int32_t)*2;
 
   SRetrieveTableRsp *rsp = (SRetrieveTableRsp *)taosMemoryCalloc(1, rspSize);
   if (NULL == rsp) {
@@ -1954,10 +1953,14 @@ int32_t qExplainGetRspFromCtx(void *ctx, SRetrieveTableRsp **pRsp) {
   rsp->completed = 1;
   rsp->numOfRows = htobe64((int64_t)rowNum);
 
-  int32_t len = blockEncode(pBlock, rsp->data, taosArrayGetSize(pBlock->pDataBlock));
+  int32_t len = blockEncode(pBlock, rsp->data + sizeof(int32_t)*2, taosArrayGetSize(pBlock->pDataBlock));
 
   rsp->compLen = htonl(len);
   rsp->payloadLen = rsp->compLen;
+  rsp->compressed = 0;
+
+  ((int32_t*)rsp->data)[0] = len;
+  ((int32_t*)rsp->data)[1] = len;
 
   blockDataDestroy(pBlock);