diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 3f2761d0fa141384caf90d7367d6909094f51113..85ea7a29f1e03f32744f62fdb6d70ae8da9b3fbe 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -3121,7 +3121,9 @@ static int32_t mndRetrieveStbCol(SRpcMsg *pReq, SShowObj *pShow, SSDataBlock *pB
       if (pShow->pIter == NULL) break;
     } else {
       fetch = true;
-      sdbGet(pSdb, SDB_STB, pShow->pIter, (void **)&pStb);
+      size_t keyLen = 0;
+      void  *pKey = taosHashGetKey(pShow->pIter, &keyLen);
+      pStb = sdbAcquire(pSdb, SDB_STB, pKey);
       if (!pStb) continue;
     }
 
diff --git a/source/dnode/mnode/sdb/inc/sdb.h b/source/dnode/mnode/sdb/inc/sdb.h
index 43f47daa69672e3db86be25cfb0e7f6b23fc9ce1..e9a9e425e3fd364a1702ca084edd8be4e0b4aeeb 100644
--- a/source/dnode/mnode/sdb/inc/sdb.h
+++ b/source/dnode/mnode/sdb/inc/sdb.h
@@ -312,7 +312,6 @@ void sdbReleaseLock(SSdb *pSdb, void *pObj, bool lock);
  */
 void *sdbFetch(SSdb *pSdb, ESdbType type, void *pIter, void **ppObj);
 void *sdbFetchAll(SSdb *pSdb, ESdbType type, void *pIter, void **ppObj, ESdbStatus *status, bool lock);
-void  sdbGet(SSdb *pSdb, ESdbType type, void *pIter, void **ppObj);
 
 /**
  * @brief Cancel a traversal
diff --git a/source/dnode/mnode/sdb/src/sdbHash.c b/source/dnode/mnode/sdb/src/sdbHash.c
index 4cee3d87729a30dd3e4457093447baebcefee64e..569c78a68c0c560e0272521fd2512089f63ca593 100644
--- a/source/dnode/mnode/sdb/src/sdbHash.c
+++ b/source/dnode/mnode/sdb/src/sdbHash.c
@@ -390,31 +390,6 @@ void *sdbFetch(SSdb *pSdb, ESdbType type, void *pIter, void **ppObj) {
   return ppRow;
 }
 
-void sdbGet(SSdb *pSdb, ESdbType type, void *pIter, void **ppObj) {
-  *ppObj = NULL;
-
-  SHashObj *hash = sdbGetHash(pSdb, type);
-  if (hash == NULL) return;
-
-  size_t keyLen = 0;
-  void  *pKey = taosHashGetKey(pIter, &keyLen);
-
-  sdbReadLock(pSdb, type);
-
-  SSdbRow **ppRow = (SSdbRow **)taosHashGet(hash, pKey, keyLen);
-  if (ppRow != NULL) {
-    SSdbRow *pRow = *ppRow;
-    if (pRow == NULL || pRow->status != SDB_STATUS_READY) {
-      sdbUnLock(pSdb, type);
-      return;
-    }
-    atomic_add_fetch_32(&pRow->refCount, 1);
-    *ppObj = pRow->pObj;
-  }
-
-  sdbUnLock(pSdb, type);
-}
-
 void *sdbFetchAll(SSdb *pSdb, ESdbType type, void *pIter, void **ppObj, ESdbStatus *status, bool lock) {
   *ppObj = NULL;
 
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index 29d1d0aafaa53bd81166b72098dd461a886eecd3..2d053d04aebdbfd533e289ff804481a53c8895f0 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -157,7 +157,7 @@ typedef struct SMTbCursor SMTbCursor;
 SMTbCursor *metaOpenTbCursor(SMeta *pMeta);
 void        metaCloseTbCursor(SMTbCursor *pTbCur);
 int32_t     metaTbCursorNext(SMTbCursor *pTbCur, ETableType jumpTableType);
-int32_t     metaTbCursorPrev(SMTbCursor *pTbCur);
+int32_t     metaTbCursorPrev(SMTbCursor *pTbCur, ETableType jumpTableType);
 
 #endif
 
diff --git a/source/dnode/vnode/src/meta/metaQuery.c b/source/dnode/vnode/src/meta/metaQuery.c
index 6ab322d26aeb7bf1844db50599e9227dfa5cb4f6..3376150d264675b98e8f7455ea941d956dfc7f58 100644
--- a/source/dnode/vnode/src/meta/metaQuery.c
+++ b/source/dnode/vnode/src/meta/metaQuery.c
@@ -336,7 +336,7 @@ int32_t metaTbCursorNext(SMTbCursor *pTbCur, ETableType jumpTableType) {
   return 0;
 }
 
-int32_t metaTbCursorPrev(SMTbCursor *pTbCur) {
+int32_t metaTbCursorPrev(SMTbCursor *pTbCur, ETableType jumpTableType) {
   int    ret;
   void  *pBuf;
   STbCfg tbCfg;
@@ -350,7 +350,7 @@ int32_t metaTbCursorPrev(SMTbCursor *pTbCur) {
     tDecoderClear(&pTbCur->mr.coder);
 
     metaGetTableEntryByVersion(&pTbCur->mr, ((SUidIdxVal *)pTbCur->pVal)[0].version, *(tb_uid_t *)pTbCur->pKey);
-    if (pTbCur->mr.me.type == TSDB_SUPER_TABLE) {
+    if (pTbCur->mr.me.type == jumpTableType) {
       continue;
     }
 
diff --git a/source/libs/executor/src/sysscanoperator.c b/source/libs/executor/src/sysscanoperator.c
index 7c2690d221f0349db417f7d568ed0625b9e980ce..f24d3523c880dfa453ce08f2b60a465e30a03abb 100644
--- a/source/libs/executor/src/sysscanoperator.c
+++ b/source/libs/executor/src/sysscanoperator.c
@@ -581,15 +581,16 @@ static SSDataBlock* sysTableScanUserCols(SOperatorInfo* pOperator) {
       continue;
     }
 
-    sysTableUserColsFillOneTableCols(pInfo, dbname, &numOfRows, dataBlock, tableName, schemaRow, typeName);
-
-    if (numOfRows >= pOperator->resultInfo.capacity) {
+    if ((numOfRows + schemaRow->nCols) > pOperator->resultInfo.capacity) {
       relocateAndFilterSysTagsScanResult(pInfo, numOfRows, dataBlock, pOperator->exprSupp.pFilterInfo);
       numOfRows = 0;
+      pInfo->restore = true;
 
       if (pInfo->pRes->info.rows > 0) {
         break;
       }
+    } else {
+      sysTableUserColsFillOneTableCols(pInfo, dbname, &numOfRows, dataBlock, tableName, schemaRow, typeName);
     }
   }
 
@@ -712,7 +713,7 @@ static SSDataBlock* sysTableScanUserTags(SOperatorInfo* pOperator) {
     }
 
     if ((smrSuperTable.me.stbEntry.schemaTag.nCols + numOfRows) > pOperator->resultInfo.capacity) {
-      metaTbCursorPrev(pInfo->pCur);
+      metaTbCursorPrev(pInfo->pCur, TSDB_TABLE_MAX);
       blockFull = true;
     } else {
       sysTableUserTagsFillOneTableTags(pInfo, &smrSuperTable, &pInfo->pCur->mr, dbname, tableName, &numOfRows,
diff --git a/tests/system-test/0-others/information_schema.py b/tests/system-test/0-others/information_schema.py
index daf348ff5bae40aa704ae0443f0c4603226736f1..6234e3cd9288b4a389382cdde2589e860187389f 100644
--- a/tests/system-test/0-others/information_schema.py
+++ b/tests/system-test/0-others/information_schema.py
@@ -22,7 +22,7 @@ class TDTestCase:
     def init(self, conn, logSql, replicaVar=1):
         self.replicaVar = int(replicaVar)
         tdLog.debug("start to execute %s" % __file__)
-        tdSql.init(conn.cursor())
+        tdSql.init(conn.cursor(), True)
         self.setsql = TDSetSql()
         self.dbname = 'db'
         self.stbname = 'stb'
@@ -132,6 +132,7 @@ class TDTestCase:
     def run(self):
         self.prepare_data()
         self.count_check()
+        self.ins_columns_check()
 
     def stop(self):
         tdSql.close()