Merge branch 'feature/TD-4034' into feature/TD-3950

src/kit/taosdemo/taosdemo.c

@@ -3492,16 +3492,6 @@ static bool getMetaFromInsertJsonFile(cJSON* root) {
 
     }
     g_args.interlace_rows = interlaceRows->valueint;
-
-    // rows per table need be less than insert batch
-    if (g_args.interlace_rows > g_args.num_of_RPR) {
-      printf("NOTICE: interlace rows value %"PRIu64" > num_of_records_per_req %"PRIu64"\n\n",
-              g_args.interlace_rows, g_args.num_of_RPR);
-      printf("        interlace rows value will be set to num_of_records_per_req %"PRIu64"\n\n",
-              g_args.num_of_RPR);
-      prompt();
-      g_args.interlace_rows = g_args.num_of_RPR;
-    }
   } else if (!interlaceRows) {
     g_args.interlace_rows = 0; // 0 means progressive mode, > 0 mean interlace mode. max value is less or equ num_of_records_per_req
   } else {
@@ -3567,6 +3557,16 @@ static bool getMetaFromInsertJsonFile(cJSON* root) {
     goto PARSE_OVER;
   }
 
+  // rows per table need be less than insert batch
+  if (g_args.interlace_rows > g_args.num_of_RPR) {
+      printf("NOTICE: interlace rows value %"PRIu64" > num_of_records_per_req %"PRIu64"\n\n",
+              g_args.interlace_rows, g_args.num_of_RPR);
+      printf("        interlace rows value will be set to num_of_records_per_req %"PRIu64"\n\n",
+              g_args.num_of_RPR);
+      prompt();
+      g_args.interlace_rows = g_args.num_of_RPR;
+  }
+
   cJSON* dbs = cJSON_GetObjectItem(root, "databases");
   if (!dbs || dbs->type != cJSON_Array) {
     printf("ERROR: failed to read json, databases not found\n");
@@ -4890,10 +4890,12 @@ static int64_t execInsert(threadInfo *pThreadInfo, uint64_t k)
   return affectedRows;
 }
 
-static void getTableName(char *pTblName, threadInfo* pThreadInfo, uint64_t tableSeq)
+static void getTableName(char *pTblName,
+        threadInfo* pThreadInfo, uint64_t tableSeq)
 {
   SSuperTable* superTblInfo = pThreadInfo->superTblInfo;
-  if (superTblInfo) {
+  if ((superTblInfo)
+          && (AUTO_CREATE_SUBTBL != superTblInfo->autoCreateTable)) {
     if (superTblInfo->childTblLimit > 0) {
         snprintf(pTblName, TSDB_TABLE_NAME_LEN, "%s",
             superTblInfo->childTblName +
@@ -6768,6 +6770,7 @@ static void *superSubscribe(void *sarg) {
   threadInfo *pThreadInfo = (threadInfo *)sarg;
   char subSqlstr[MAX_QUERY_SQL_LENGTH];
   TAOS_SUB*    tsub[MAX_QUERY_SQL_COUNT] = {0};
+  uint64_t tsubSeq;
 
   if (pThreadInfo->ntables > MAX_QUERY_SQL_COUNT) {
       errorPrint("The table number(%"PRId64") of the thread is more than max query sql count: %d\n",
@@ -6776,6 +6779,15 @@ static void *superSubscribe(void *sarg) {
       exit(-1);
   }
 
+  if (g_queryInfo.superQueryInfo.sqlCount * pThreadInfo->ntables > MAX_QUERY_SQL_COUNT) {
+      errorPrint("The number %"PRId64" of sql count(%"PRIu64") multiple the table number(%"PRId64") of the thread is more than max query sql count: %d\n",
+              g_queryInfo.superQueryInfo.sqlCount * pThreadInfo->ntables,
+              g_queryInfo.superQueryInfo.sqlCount,
+              pThreadInfo->ntables,
+              MAX_QUERY_SQL_COUNT);
+      exit(-1);
+  }
+
   if (pThreadInfo->taos == NULL) {
     TAOS * taos = NULL;
     taos = taos_connect(g_queryInfo.host,
@@ -6804,6 +6816,8 @@ static void *superSubscribe(void *sarg) {
   char topic[32] = {0};
   for (uint64_t i = pThreadInfo->start_table_from;
           i <= pThreadInfo->end_table_to; i++) {
+
+      tsubSeq = i - pThreadInfo->start_table_from;
       verbosePrint("%s() LN%d, [%d], start=%"PRId64" end=%"PRId64" i=%"PRIu64"\n",
               __func__, __LINE__,
               pThreadInfo->threadID,
@@ -6823,12 +6837,12 @@ static void *superSubscribe(void *sarg) {
 
       debugPrint("%s() LN%d, [%d] subSqlstr: %s\n",
               __func__, __LINE__, pThreadInfo->threadID, subSqlstr);
-      tsub[i] = subscribeImpl(
+      tsub[tsubSeq] = subscribeImpl(
               STABLE_CLASS,
               pThreadInfo, subSqlstr, topic,
               g_queryInfo.superQueryInfo.subscribeRestart,
               g_queryInfo.superQueryInfo.subscribeInterval);
-      if (NULL == tsub[i]) {
+      if (NULL == tsub[tsubSeq]) {
         taos_close(pThreadInfo->taos);
         return NULL;
       }
@@ -6844,54 +6858,56 @@ static void *superSubscribe(void *sarg) {
   while(1) {
     for (uint64_t i = pThreadInfo->start_table_from;
             i <= pThreadInfo->end_table_to; i++) {
-        if (ASYNC_MODE == g_queryInfo.superQueryInfo.asyncMode) {
-            continue;
-        }
-
-        res = taos_consume(tsub[i]);
-        if (res) {
-            if (g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq][0] != 0) {
-                sprintf(pThreadInfo->fp, "%s-%d",
-                        g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq],
-                        pThreadInfo->threadID);
-                appendResultToFile(res, pThreadInfo->fp);
-            }
-            if (g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq][0] != 0) {
-                sprintf(pThreadInfo->fp, "%s-%d",
-                        g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq],
-                        pThreadInfo->threadID);
-                appendResultToFile(res, pThreadInfo->fp);
-            }
-            consumed[i] ++;
+      tsubSeq = i - pThreadInfo->start_table_from;
+      if (ASYNC_MODE == g_queryInfo.superQueryInfo.asyncMode) {
+          continue;
+      }
 
-            if ((g_queryInfo.superQueryInfo.subscribeKeepProgress)
-                && (consumed[i] >=
-                    g_queryInfo.superQueryInfo.resubAfterConsume[pThreadInfo->querySeq])) {
-                printf("keepProgress:%d, resub super table query: %"PRIu64"\n",
-                    g_queryInfo.superQueryInfo.subscribeKeepProgress,
-                    pThreadInfo->querySeq);
-                taos_unsubscribe(tsub,
+      res = taos_consume(tsub[tsubSeq]);
+      if (res) {
+          if (g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq][0] != 0) {
+              sprintf(pThreadInfo->fp, "%s-%d",
+                      g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq],
+                      pThreadInfo->threadID);
+              appendResultToFile(res, pThreadInfo->fp);
+          }
+          if (g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq][0] != 0) {
+              sprintf(pThreadInfo->fp, "%s-%d",
+                      g_queryInfo.superQueryInfo.result[pThreadInfo->querySeq],
+                      pThreadInfo->threadID);
+              appendResultToFile(res, pThreadInfo->fp);
+          }
+          consumed[tsubSeq] ++;
+
+          if ((g_queryInfo.superQueryInfo.subscribeKeepProgress)
+                  && (consumed[tsubSeq] >=
+                      g_queryInfo.superQueryInfo.resubAfterConsume[pThreadInfo->querySeq])) {
+              printf("keepProgress:%d, resub super table query: %"PRIu64"\n",
+                      g_queryInfo.superQueryInfo.subscribeKeepProgress,
+                      pThreadInfo->querySeq);
+              taos_unsubscribe(tsub[tsubSeq],
                     g_queryInfo.superQueryInfo.subscribeKeepProgress);
-                consumed[i]= 0;
-                tsub[i] = subscribeImpl(
-                        STABLE_CLASS,
-                        pThreadInfo, subSqlstr, topic,
-                        g_queryInfo.superQueryInfo.subscribeRestart,
-                        g_queryInfo.superQueryInfo.subscribeInterval
-                    );
-                if (NULL == tsub[i]) {
-                    taos_close(pThreadInfo->taos);
-                    return NULL;
-                }
-            }
-        }
+              consumed[tsubSeq]= 0;
+              tsub[tsubSeq] = subscribeImpl(
+                      STABLE_CLASS,
+                      pThreadInfo, subSqlstr, topic,
+                      g_queryInfo.superQueryInfo.subscribeRestart,
+                      g_queryInfo.superQueryInfo.subscribeInterval
+                      );
+              if (NULL == tsub[tsubSeq]) {
+                  taos_close(pThreadInfo->taos);
+                  return NULL;
+              }
+          }
+      }
     }
   }
   taos_free_result(res);
 
   for (uint64_t i = pThreadInfo->start_table_from;
           i <= pThreadInfo->end_table_to; i++) {
-    taos_unsubscribe(tsub[i], 0);
+    tsubSeq = i - pThreadInfo->start_table_from;
+    taos_unsubscribe(tsub[tsubSeq], 0);
   }
 
   taos_close(pThreadInfo->taos);

src/tsdb/inc/tsdbMeta.h

@@ -38,8 +38,9 @@ typedef struct STable {
   SRWLatch       latch;  // TODO: implementa latch functions
 
   SDataCol      *lastCols;
-  int16_t        lastColNum;
-  int16_t        maxColumnNum;
+  int16_t        maxColNum;
+  int16_t        restoreColumnNum;
+  bool           hasRestoreLastColumn;
   int            lastColSVersion;
   T_REF_DECLARE()
 } STable;
@@ -90,6 +91,7 @@ int        tsdbInitColIdCacheWithSchema(STable* pTable, STSchema* pSchema);
 int16_t    tsdbGetLastColumnsIndexByColId(STable* pTable, int16_t colId);
 int        tsdbUpdateLastColSchema(STable *pTable, STSchema *pNewSchema);
 STSchema*  tsdbGetTableLatestSchema(STable *pTable);
+void       tsdbFreeLastColumns(STable* pTable);
 
 static FORCE_INLINE int tsdbCompareSchemaVersion(const void *key1, const void *key2) {
   if (*(int16_t *)key1 < schemaVersion(*(STSchema **)key2)) {

src/tsdb/inc/tsdbint.h

@@ -75,6 +75,9 @@ struct STsdbRepo {
   STsdbCfg        save_config;    // save apply config
   bool            config_changed; // config changed flag
   pthread_mutex_t save_mutex;     // protect save config
+  
+  uint8_t         hasCachedLastRow;
+  uint8_t         hasCachedLastColumn;
 
   STsdbAppH       appH;
   STsdbStat       stat;
@@ -100,6 +103,7 @@ int        tsdbUnlockRepo(STsdbRepo* pRepo);
 STsdbMeta* tsdbGetMeta(STsdbRepo* pRepo);
 int        tsdbCheckCommit(STsdbRepo* pRepo);
 int        tsdbRestoreInfo(STsdbRepo* pRepo);
+int        tsdbCacheLastData(STsdbRepo *pRepo, STsdbCfg* oldCfg);
 void       tsdbGetRootDir(int repoid, char dirName[]);
 void       tsdbGetDataDir(int repoid, char dirName[]);
 

src/tsdb/src/tsdbCommitQueue.c

@@ -113,11 +113,15 @@ int tsdbScheduleCommit(STsdbRepo *pRepo) {
 }
 
 static void tsdbApplyRepoConfig(STsdbRepo *pRepo) {
+  pthread_mutex_lock(&pRepo->save_mutex);
+
   pRepo->config_changed = false;
   STsdbCfg * pSaveCfg = &pRepo->save_config;
-
+  STsdbCfg oldCfg;
   int32_t oldTotalBlocks = pRepo->config.totalBlocks;
 
+  memcpy(&oldCfg, &(pRepo->config), sizeof(STsdbCfg));
+
   pRepo->config.compression = pRepo->save_config.compression;
   pRepo->config.keep = pRepo->save_config.keep;
   pRepo->config.keep1 = pRepo->save_config.keep1;
@@ -125,10 +129,12 @@ static void tsdbApplyRepoConfig(STsdbRepo *pRepo) {
   pRepo->config.cacheLastRow = pRepo->save_config.cacheLastRow;
   pRepo->config.totalBlocks = pRepo->save_config.totalBlocks;
 
-  tsdbInfo("vgId:%d apply new config: compression(%d), keep(%d,%d,%d), totalBlocks(%d), cacheLastRow(%d),totalBlocks(%d)",
+  pthread_mutex_unlock(&pRepo->save_mutex);
+
+  tsdbInfo("vgId:%d apply new config: compression(%d), keep(%d,%d,%d), totalBlocks(%d), cacheLastRow(%d->%d),totalBlocks(%d->%d)",
     REPO_ID(pRepo),
     pSaveCfg->compression, pSaveCfg->keep,pSaveCfg->keep1, pSaveCfg->keep2,
-    pSaveCfg->totalBlocks, pSaveCfg->cacheLastRow, pSaveCfg->totalBlocks);
+    pSaveCfg->totalBlocks, oldCfg.cacheLastRow, pSaveCfg->cacheLastRow, oldTotalBlocks, pSaveCfg->totalBlocks);
 
   int err = tsdbExpendPool(pRepo, oldTotalBlocks);
   if (!TAOS_SUCCEEDED(err)) {
@@ -136,6 +142,12 @@ static void tsdbApplyRepoConfig(STsdbRepo *pRepo) {
       REPO_ID(pRepo), oldTotalBlocks, pSaveCfg->totalBlocks, tstrerror(err));
   }
 
+  if (oldCfg.cacheLastRow != pRepo->config.cacheLastRow) {
+    if (tsdbLockRepo(pRepo) < 0) return;
+    tsdbCacheLastData(pRepo, &oldCfg);
+    tsdbUnlockRepo(pRepo);
+  }
+
 }
 
 static void *tsdbLoopCommit(void *arg) {
@@ -165,10 +177,8 @@ static void *tsdbLoopCommit(void *arg) {
     pRepo = ((SCommitReq *)pNode->data)->pRepo;
 
     // check if need to apply new config
-    if (pRepo->config_changed) {
-      pthread_mutex_lock(&pRepo->save_mutex);       
+    if (pRepo->config_changed) {             
       tsdbApplyRepoConfig(pRepo);
-      pthread_mutex_unlock(&pRepo->save_mutex);
     }
 
     tsdbCommitData(pRepo);

src/tsdb/src/tsdbMain.c

@@ -548,6 +548,8 @@ static STsdbRepo *tsdbNewRepo(STsdbCfg *pCfg, STsdbAppH *pAppH) {
     return NULL;
   }
   pRepo->config_changed = false;
+  atomic_store_8(&pRepo->hasCachedLastRow, 0);
+  atomic_store_8(&pRepo->hasCachedLastColumn, 0);
 
   code = tsem_init(&(pRepo->readyToCommit), 0, 1);
   if (code != 0) {
@@ -636,7 +638,7 @@ static int tsdbRestoreLastColumns(STsdbRepo *pRepo, STable *pTable, SReadH* pRea
   int err = 0;
 
   numColumns = schemaNCols(pSchema);
-  if (numColumns <= pTable->maxColumnNum) {
+  if (numColumns <= pTable->restoreColumnNum) {
     return 0;
   }
   if (pTable->lastColSVersion != schemaVersion(pSchema)) {
@@ -675,7 +677,7 @@ static int tsdbRestoreLastColumns(STsdbRepo *pRepo, STable *pTable, SReadH* pRea
   SBlockIdx *pIdx = pReadh->pBlkIdx;
   blockIdx = (int32_t)(pIdx->numOfBlocks - 1);
 
-  while (numColumns > pTable->maxColumnNum && blockIdx >= 0) {
+  while (numColumns > pTable->restoreColumnNum && blockIdx >= 0) {
     bool loadStatisData = false;
     pBlock = pReadh->pBlkInfo->blocks + blockIdx;
     blockIdx -= 1;
@@ -693,7 +695,7 @@ static int tsdbRestoreLastColumns(STsdbRepo *pRepo, STable *pTable, SReadH* pRea
       loadStatisData = true;
     }
 
-    for (int16_t i = 0; i < numColumns && numColumns > pTable->maxColumnNum; ++i) {
+    for (int16_t i = 0; i < numColumns && numColumns > pTable->restoreColumnNum; ++i) {
       STColumn *pCol = schemaColAt(pSchema, i);
       // ignore loaded columns
       if (pTable->lastCols[i].bytes != 0) {
@@ -733,9 +735,9 @@ static int tsdbRestoreLastColumns(STsdbRepo *pRepo, STable *pTable, SReadH* pRea
         tdAppendColVal(row, tdGetColDataOfRow(pDataCol, rowId), pCol->type, pCol->bytes, pCol->offset);
         pLastCol->ts = dataRowKey(row);
 
-        pTable->maxColumnNum += 1;
+        pTable->restoreColumnNum += 1;
 
-        tsdbInfo("tsdbRestoreLastColumns restore vgId:%d,table:%s cache column %d, %" PRId64, REPO_ID(pRepo), pTable->name->data, pLastCol->colId, pLastCol->ts);
+        tsdbDebug("tsdbRestoreLastColumns restore vgId:%d,table:%s cache column %d, %" PRId64, REPO_ID(pRepo), pTable->name->data, pLastCol->colId, pLastCol->ts);
         break;
       }
     }
@@ -766,7 +768,7 @@ int tsdbRestoreInfo(STsdbRepo *pRepo) {
     for (int i = 1; i < pMeta->maxTables; i++) {
       STable *pTable = pMeta->tables[i];
       if (pTable == NULL) continue;
-      pTable->maxColumnNum = 0;  
+      pTable->restoreColumnNum = 0;  
     }
   }
 
@@ -841,5 +843,165 @@ int tsdbRestoreInfo(STsdbRepo *pRepo) {
   }
 
   tsdbDestroyReadH(&readh);
+  if (CACHE_LAST_ROW(pCfg)) {
+    atomic_store_8(&pRepo->hasCachedLastRow, 1);
+  }
+  if (CACHE_LAST_NULL_COLUMN(pCfg)) {
+    atomic_store_8(&pRepo->hasCachedLastColumn, 1);
+  }
+
   return 0;
 }
+
+int tsdbCacheLastData(STsdbRepo *pRepo, STsdbCfg* oldCfg) {
+  bool cacheLastRow = false, cacheLastCol = false;
+  SFSIter    fsiter;
+  SReadH     readh;
+  SDFileSet *pSet;
+  STsdbMeta *pMeta = pRepo->tsdbMeta;
+  //STsdbCfg * pCfg = REPO_CFG(pRepo);
+  SBlock *   pBlock;
+  int tableNum = 0;
+  int maxTableIdx = 0;
+  int cacheLastRowTableNum = 0;
+  int cacheLastColTableNum = 0;
+
+  bool need_free_last_row = CACHE_LAST_ROW(oldCfg) && !CACHE_LAST_ROW(&(pRepo->config));
+  bool need_free_last_col = CACHE_LAST_NULL_COLUMN(oldCfg) && !CACHE_LAST_NULL_COLUMN(&(pRepo->config));
+
+  if (CACHE_LAST_ROW(&(pRepo->config)) || CACHE_LAST_NULL_COLUMN(&(pRepo->config))) {    
+    tsdbInfo("tsdbCacheLastData cache last data since cacheLast option changed");
+    cacheLastRow = !CACHE_LAST_ROW(oldCfg) && CACHE_LAST_ROW(&(pRepo->config));
+    cacheLastCol = !CACHE_LAST_NULL_COLUMN(oldCfg) && CACHE_LAST_NULL_COLUMN(&(pRepo->config));
+  }
+
+  // calc max table idx and table num
+  for (int i = 1; i < pMeta->maxTables; i++) {
+    STable *pTable = pMeta->tables[i];
+    if (pTable == NULL) continue;
+    tableNum += 1;
+    maxTableIdx = i;
+    if (cacheLastCol) {
+      pTable->restoreColumnNum = 0;
+    } 
+  }
+
+  // if close last option,need to free data
+  if (need_free_last_row || need_free_last_col) {
+    if (need_free_last_row) {
+      atomic_store_8(&pRepo->hasCachedLastRow, 0);
+    }
+    if (need_free_last_col) {
+      atomic_store_8(&pRepo->hasCachedLastColumn, 0);
+    }
+    tsdbInfo("free cache last data since cacheLast option changed");    
+    for (int i = 1; i < maxTableIdx; i++) {
+      STable *pTable = pMeta->tables[i];
+      if (pTable == NULL) continue;   
+      if (need_free_last_row) {
+        taosTZfree(pTable->lastRow);
+        pTable->lastRow = NULL;
+        pTable->lastKey = TSKEY_INITIAL_VAL;
+      }
+      if (need_free_last_col) {
+        tsdbFreeLastColumns(pTable);
+      }
+    }    
+  }
+
+  if (!cacheLastRow && !cacheLastCol) {
+    return 0;
+  }
+
+  cacheLastRowTableNum = cacheLastRow ? tableNum : 0;
+  cacheLastColTableNum = cacheLastCol ? tableNum : 0;
+
+  if (tsdbInitReadH(&readh, pRepo) < 0) {
+    return -1;
+  }
+
+  tsdbFSIterInit(&fsiter, REPO_FS(pRepo), TSDB_FS_ITER_BACKWARD);
+
+  while ((pSet = tsdbFSIterNext(&fsiter)) != NULL && (cacheLastRowTableNum > 0 || cacheLastColTableNum > 0)) {
+    if (tsdbSetAndOpenReadFSet(&readh, pSet) < 0) {
+      tsdbDestroyReadH(&readh);
+      return -1;
+    }
+
+    if (tsdbLoadBlockIdx(&readh) < 0) {
+      tsdbDestroyReadH(&readh);
+      return -1;
+    }
+
+    for (int i = 1; i <= maxTableIdx; i++) {
+      STable *pTable = pMeta->tables[i];
+      if (pTable == NULL) continue;
+
+      //tsdbInfo("tsdbRestoreInfo restore vgId:%d,table:%s", REPO_ID(pRepo), pTable->name->data);
+
+      if (tsdbSetReadTable(&readh, pTable) < 0) {
+        tsdbDestroyReadH(&readh);
+        return -1;
+      }
+
+      SBlockIdx *pIdx = readh.pBlkIdx;
+
+      if (pIdx && cacheLastRowTableNum > 0 && pTable->lastRow == NULL) {                
+        pTable->lastKey = pIdx->maxKey;
+
+        if (tsdbLoadBlockInfo(&readh, NULL) < 0) {
+          tsdbDestroyReadH(&readh);
+          return -1;
+        }
+
+        pBlock = readh.pBlkInfo->blocks + pIdx->numOfBlocks - 1;
+
+        if (tsdbLoadBlockData(&readh, pBlock, NULL) < 0) {
+          tsdbDestroyReadH(&readh);
+          return -1;
+        }
+
+        // Get the data in row
+        ASSERT(pTable->lastRow == NULL);
+        STSchema *pSchema = tsdbGetTableSchema(pTable);
+        pTable->lastRow = taosTMalloc(dataRowMaxBytesFromSchema(pSchema));
+        if (pTable->lastRow == NULL) {
+          terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
+          tsdbDestroyReadH(&readh);
+          return -1;
+        }
+
+        tdInitDataRow(pTable->lastRow, pSchema);
+        for (int icol = 0; icol < schemaNCols(pSchema); icol++) {
+          STColumn *pCol = schemaColAt(pSchema, icol);
+          SDataCol *pDataCol = readh.pDCols[0]->cols + icol;
+          tdAppendColVal(pTable->lastRow, tdGetColDataOfRow(pDataCol, pBlock->numOfRows - 1), pCol->type, pCol->bytes,
+                          pCol->offset);
+        }
+        cacheLastRowTableNum -= 1;
+      }
+      
+      // restore NULL columns
+      if (pIdx && cacheLastColTableNum > 0 && !pTable->hasRestoreLastColumn) {
+        if (tsdbRestoreLastColumns(pRepo, pTable, &readh) != 0) {
+          tsdbDestroyReadH(&readh);
+          return -1;
+        }
+        if (pTable->hasRestoreLastColumn) {
+          cacheLastColTableNum -= 1;
+        }
+      }
+    }
+  }
+
+  tsdbDestroyReadH(&readh);
+
+  if (cacheLastRow) {
+    atomic_store_8(&pRepo->hasCachedLastRow, 1);
+  }
+  if (cacheLastCol) {
+    atomic_store_8(&pRepo->hasCachedLastColumn, 1);
+  }
+  
+  return 0;
+}
\ No newline at end of file

src/tsdb/src/tsdbMeta.c

@@ -44,7 +44,6 @@ static int     tsdbRemoveTableFromStore(STsdbRepo *pRepo, STable *pTable);
 static int     tsdbRmTableFromMeta(STsdbRepo *pRepo, STable *pTable);
 static int     tsdbAdjustMetaTables(STsdbRepo *pRepo, int tid);
 static int     tsdbCheckTableTagVal(SKVRow *pKVRow, STSchema *pSchema);
-static void    tsdbFreeLastColumns(STable* pTable);
 
 // ------------------ OUTER FUNCTIONS ------------------
 int tsdbCreateTable(STsdbRepo *repo, STableCfg *pCfg) {
@@ -590,12 +589,12 @@ void tsdbUnRefTable(STable *pTable) {
   }
 }
 
-static void tsdbFreeLastColumns(STable* pTable) {
+void tsdbFreeLastColumns(STable* pTable) {
   if (pTable->lastCols == NULL) {
     return;
   }
 
-  for (int i = 0; i < pTable->lastColNum; ++i) {
+  for (int i = 0; i < pTable->maxColNum; ++i) {
     if (pTable->lastCols[i].bytes == 0) {
       continue;
     }
@@ -605,14 +604,16 @@ static void tsdbFreeLastColumns(STable* pTable) {
   }
   tfree(pTable->lastCols);
   pTable->lastCols = NULL;
-  pTable->lastColNum = 0;
+  pTable->maxColNum = 0;
+  pTable->lastColSVersion = -1;
+  pTable->restoreColumnNum = 0;
 }
 
 int16_t tsdbGetLastColumnsIndexByColId(STable* pTable, int16_t colId) {
   if (pTable->lastCols == NULL) {
     return -1;
   }
-  for (int16_t i = 0; i < pTable->lastColNum; ++i) {
+  for (int16_t i = 0; i < pTable->maxColNum; ++i) {
     if (pTable->lastCols[i].colId == colId) {
       return i;
     }
@@ -640,8 +641,8 @@ int tsdbInitColIdCacheWithSchema(STable* pTable, STSchema* pSchema) {
   }
 
   pTable->lastColSVersion = schemaVersion(pSchema);
-  pTable->lastColNum = numOfColumn;
-  pTable->maxColumnNum = 0;
+  pTable->maxColNum = numOfColumn;
+  pTable->restoreColumnNum = 0;
   return 0;
 }
 
@@ -682,11 +683,11 @@ int tsdbUpdateLastColSchema(STable *pTable, STSchema *pNewSchema) {
   }
 
   SDataCol *oldLastCols = pTable->lastCols;
-  int16_t oldLastColNum = pTable->lastColNum;
+  int16_t oldLastColNum = pTable->maxColNum;
 
   pTable->lastColSVersion = schemaVersion(pNewSchema);
   pTable->lastCols = lastCols;
-  pTable->lastColNum = numOfCols;
+  pTable->maxColNum = numOfCols;
 
   if (oldLastCols == NULL) {
     TSDB_WUNLOCK_TABLE(pTable);
@@ -797,8 +798,8 @@ static STable *tsdbNewTable() {
   pTable->lastKey = TSKEY_INITIAL_VAL;
 
   pTable->lastCols = NULL;
-  pTable->maxColumnNum = 0;
-  pTable->lastColNum = 0;
+  pTable->restoreColumnNum = 0;
+  pTable->maxColNum = 0;
   pTable->lastColSVersion = -1;
   return pTable;
 }

tests/script/api/stmtBatchTest.c

@@ -37,7 +37,7 @@ typedef struct {
 
 //void taosMsleep(int mseconds);
 
-int g_rows = 0;
+int g_runTimes = 5;
 
 
 unsigned long long getCurrentTime(){
@@ -1336,7 +1336,7 @@ static void checkResult(TAOS     *taos, char *tname, int printr, int expected) {
   result = taos_query(taos, sql);
   int code = taos_errno(result);
   if (code != 0) {
-    printf("failed to query table, reason:%s\n", taos_errstr(result));
+    printf("failed to query table: %s, reason:%s\n", tname, taos_errstr(result));
     taos_free_result(result);
     return;
   }
@@ -1358,9 +1358,9 @@ static void checkResult(TAOS     *taos, char *tname, int printr, int expected) {
   }
   
   if (rows == expected) {
-    printf("%d rows are fetched as expectation\n", rows);
+    printf("%d rows are fetched as expectation from %s\n", rows, tname);
   } else {
-    printf("!!!expect %d rows, but %d rows are fetched\n", expected, rows);
+    printf("!!!expect %d rows, but %d rows are fetched from %s\n", expected, rows, tname);
     return;
   }
 
@@ -1451,15 +1451,52 @@ static void prepareV_long(TAOS     *taos, int schemaCase, int tableNum, int lenO
 
 
 
-//void runcase(TAOS     *taos, int idx) {
-static void* runCase(void *para) {
-  ThreadInfo* tInfo = (ThreadInfo *)para;
-  TAOS *taos = tInfo->taos;
-  int   idx  = tInfo->idx;
+static void prepareVcolumn(TAOS     *taos, int schemaCase, int tableNum, int lenOfBinaryDef, char* dbName) {
+  TAOS_RES *result;
+  int      code;
+  char     sqlstr[1024] = {0};
+  sprintf(sqlstr, "drop database if exists %s;", dbName);
+  result = taos_query(taos, sqlstr); 
+  taos_free_result(result);
+
+  sprintf(sqlstr, "create database %s;", dbName);
+  result = taos_query(taos, sqlstr);
+  code = taos_errno(result);
+  if (code != 0) {
+    printf("failed to create database, reason:%s\n", taos_errstr(result));
+    taos_free_result(result);
+    return;
+  }
+  taos_free_result(result);
+
+  sprintf(sqlstr, "use %s;", dbName);
+  result = taos_query(taos, sqlstr);
+  taos_free_result(result);
   
-  TAOS_STMT *stmt = NULL;
+  // create table
+  for (int i = 0 ; i < tableNum; i++) {
+    char buf[1024];
+    if (schemaCase) {
+      sprintf(buf, "create table m%d (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, br binary(%d), nr nchar(%d), ts2 timestamp)", i, lenOfBinaryDef, lenOfBinaryDef) ;
+    } else {
+      sprintf(buf, "create table m%d (ts timestamp, b int)", i) ;
+    }
+    
+    result = taos_query(taos, buf);
+    code = taos_errno(result);
+    if (code != 0) {
+      printf("failed to create table, reason:%s\n", taos_errstr(result));
+      taos_free_result(result);
+      return;
+    }
+    taos_free_result(result);
+  }
+
+}
 
-  (void)idx;
+//void runcase(TAOS     *taos, int idx) {
+static void runCase(TAOS *taos) {
+  TAOS_STMT *stmt = NULL;
   
   int tableNum;
   int lenOfBinaryDef;
@@ -1975,7 +2012,7 @@ static void* runCase(void *para) {
     }
 #endif  
 
-  return NULL;
+  return ;
 
 }
 
@@ -2166,14 +2203,8 @@ static int stmt_bind_case_001_long(TAOS_STMT *stmt, int tableNum, int rowsOfPerC
   return 0;
 }
 
-static void* runCase_long(void *para) {
-  ThreadInfo* tInfo = (ThreadInfo *)para;
-  TAOS *taos = tInfo->taos;
-  int   idx  = tInfo->idx;
-  
+static void runCase_long(TAOS *taos) {
   TAOS_STMT *stmt = NULL;
-
-  (void)idx;
   
   int tableNum;
   int lenOfBinaryDef;
@@ -2228,7 +2259,7 @@ static void* runCase_long(void *para) {
       prepareV_long(taos, 1, tableNum, lenOfBinaryDef);
 
       totalRowsPerTbl = 0;
-      for (int i = 0; i < 30000; i++) {
+      for (int i = 0; i < g_runTimes; i++) {
         stmt = taos_stmt_init(taos);
         stmt_bind_case_001_long(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum, &startTs);
       
@@ -2245,61 +2276,955 @@ static void* runCase_long(void *para) {
   }
 #endif  
 
-  return NULL;
+  return;
 
 }
 
+/*=======================*/
+/*
+test scene:   insert into tb1 (ts,f1) values (?,?)
+*/
+static int stmt_specifyCol_bind_case_001(TAOS_STMT *stmt, int tableNum, int rowsOfPerColum, int bingNum, int lenOfBinaryDef, int lenOfBinaryAct, int columnNum) {
+  sampleValue* v = (sampleValue *)calloc(1, sizeof(sampleValue));
+
+  int totalRowsPerTbl = rowsOfPerColum * bingNum;
 
-int main(int argc, char *argv[])
-{
-  TAOS *taos;
-  char  host[32] = "127.0.0.1";
-  char* serverIp = NULL;
-  int   threadNum = 2;
+  v->ts = (int64_t *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * tableNum));
+  v->br = (char *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * lenOfBinaryDef));
+  v->nr = (char *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * lenOfBinaryDef));
   
-  // connect to server
-  if (argc == 1) {
-    serverIp = host;
-  } else if (argc == 2) {
-    serverIp = argv[1];
-  } else if (argc == 3) {
-    serverIp = argv[1];
-    threadNum = atoi(argv[2]);
-  } else if (argc == 4) {
-    serverIp = argv[1];
-    threadNum = atoi(argv[2]);
-    g_rows = atoi(argv[3]);
+  int *lb = (int *)malloc(MAX_ROWS_OF_PER_COLUMN * sizeof(int));
+  
+  TAOS_MULTI_BIND *params = calloc(1, sizeof(TAOS_MULTI_BIND) * (size_t)(bingNum * columnNum * (tableNum+1) * rowsOfPerColum));
+  char* is_null = malloc(sizeof(char) * MAX_ROWS_OF_PER_COLUMN);
+  char* no_null = malloc(sizeof(char) * MAX_ROWS_OF_PER_COLUMN);
+
+  int64_t tts = 1591060628000;
+
+  for (int i = 0; i < rowsOfPerColum; ++i) {
+    lb[i] = lenOfBinaryAct;
+    no_null[i] = 0;
+    is_null[i] = (i % 10 == 2) ? 1 : 0;
+    v->b[i]  = (int8_t)(i % 2);
+    v->v1[i] = (int8_t)((i+1) % 2);
+    v->v2[i] = (int16_t)i;
+    v->v4[i] = (int32_t)(i+1);
+    v->v8[i] = (int64_t)(i+2);
+    v->f4[i] = (float)(i+3);
+    v->f8[i] = (double)(i+4);
+    char tbuf[MAX_BINARY_DEF_LEN];
+    memset(tbuf, 0, MAX_BINARY_DEF_LEN);
+    sprintf(tbuf, "binary-%d-0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789",  i%10);
+    memcpy(v->br + i*lenOfBinaryDef, tbuf, (size_t)lenOfBinaryAct);
+    memset(tbuf, 0, MAX_BINARY_DEF_LEN);
+    sprintf(tbuf, "nchar-%d-0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789",  i%10);
+    memcpy(v->nr + i*lenOfBinaryDef, tbuf, (size_t)lenOfBinaryAct);
+    v->ts2[i] = tts + i;
   }
 
-  printf("server:%s, threadNum:%d, rows:%d\n\n", serverIp, threadNum, g_rows);
+  int i = 0;
+  for (int j = 0; j < bingNum * tableNum; j++) {
+    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
+    params[i+0].buffer_length = sizeof(int64_t);
+    params[i+0].buffer = &v->ts[j*rowsOfPerColum];
+    params[i+0].length = NULL;
+    params[i+0].is_null = no_null;
+    params[i+0].num = rowsOfPerColum;
+    
+    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
+    params[i+1].buffer_length = sizeof(int8_t);
+    params[i+1].buffer = v->b;
+    params[i+1].length = NULL;
+    params[i+1].is_null = is_null;
+    params[i+1].num = rowsOfPerColum;
 
-  pthread_t *pThreadList = (pthread_t *) calloc(sizeof(pthread_t), (size_t)threadNum);
-  ThreadInfo* threadInfo = (ThreadInfo *) calloc(sizeof(ThreadInfo), (size_t)threadNum);
+    params[i+2].buffer_type = TSDB_DATA_TYPE_INT;
+    params[i+2].buffer_length = sizeof(int32_t);
+    params[i+2].buffer = v->v4;
+    params[i+2].length = NULL;
+    params[i+2].is_null = is_null;
+    params[i+2].num = rowsOfPerColum;
 
-  ThreadInfo*  tInfo = threadInfo;
-  for (int i = 0; i < threadNum; i++) {
-    taos = taos_connect(serverIp, "root", "taosdata", NULL, 0);
-    if (taos == NULL) {
-      printf("failed to connect to TDengine, reason:%s\n", taos_errstr(taos));
-      return -1;
-    }   
+    params[i+3].buffer_type = TSDB_DATA_TYPE_FLOAT;
+    params[i+3].buffer_length = sizeof(float);
+    params[i+3].buffer = v->f4;
+    params[i+3].length = NULL;
+    params[i+3].is_null = is_null;
+    params[i+3].num = rowsOfPerColum;
 
-    tInfo->taos = taos;
-    tInfo->idx = i;
-    if (0 == i) {
-      pthread_create(&(pThreadList[0]), NULL, runCase, (void *)tInfo);
-    } else if (1 == i){
-      pthread_create(&(pThreadList[0]), NULL, runCase_long, (void *)tInfo);
+    params[i+4].buffer_type = TSDB_DATA_TYPE_BINARY;
+    params[i+4].buffer_length = (uintptr_t)lenOfBinaryDef;
+    params[i+4].buffer = v->br;
+    params[i+4].length = lb;
+    params[i+4].is_null = is_null;
+    params[i+4].num = rowsOfPerColum;
+
+    i+=columnNum;
+  }
+
+  //int64_t tts = 1591060628000;
+  for (int i = 0; i < totalRowsPerTbl * tableNum; ++i) {
+    v->ts[i] = tts + i;
+  }
+
+  unsigned long long starttime = getCurrentTime();
+
+// create table m%d (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, br binary(%d), nr nchar(%d), ts2 timestamp)
+  char *sql = "insert into m0 (ts,b,v4,f4,br) values(?,?,?,?,?)";
+  int code = taos_stmt_prepare(stmt, sql, 0);
+  if (code != 0){
+    printf("failed to execute taos_stmt_prepare. code:0x%x[%s]\n", code, tstrerror(code));
+    return -1;
+  }
+
+  int id = 0;
+  for (int l = 0; l < bingNum; l++) {
+    for (int zz = 0; zz < tableNum; zz++) {
+      //char buf[32];
+      //sprintf(buf, "m%d", zz);
+      //code = taos_stmt_set_tbname(stmt, buf);
+      //if (code != 0){
+      //  printf("failed to execute taos_stmt_set_tbname. code:0x%x[%s]\n", code, tstrerror(code));
+      //  return -1;
+      //}  
+
+      for (int col=0; col < columnNum; ++col) {
+        code = taos_stmt_bind_single_param_batch(stmt, params + id, col);
+        if (code != 0){
+          printf("failed to execute taos_stmt_bind_single_param_batch. code:0x%x[%s]\n", code, tstrerror(code));
+          return -1;
+        }
+        id++;
+      }
+      
+      code = taos_stmt_add_batch(stmt);
+      if (code != 0) {
+        printf("failed to execute taos_stmt_add_batch. code:0x%x[%s]\n", code, tstrerror(code));
+        return -1;
+      }
+    }
+
+    code = taos_stmt_execute(stmt);
+    if (code != 0) {
+      printf("failed to execute taos_stmt_execute. code:0x%x[%s]\n", code, tstrerror(code));
+      return -1;
     }
-    tInfo++;
   }
 
-  for (int i = 0; i < threadNum; i++) {
-    pthread_join(pThreadList[i], NULL);
+  unsigned long long endtime = getCurrentTime();
+  unsigned long long totalRows = (uint32_t)(totalRowsPerTbl * tableNum);
+  printf("insert total %d records, used %u seconds, avg:%u useconds per record\n", totalRows, (endtime-starttime)/1000000UL, (endtime-starttime)/totalRows);
+
+  free(v->ts);  
+  free(v->br);  
+  free(v->nr);  
+  free(v);
+  free(lb);
+  free(params);
+  free(is_null);
+  free(no_null);
+
+  return 0;
+}
+
+/*=======================*/
+/*
+test scene:   insert into ? (ts,f1) values (?,?)
+*/
+static int stmt_specifyCol_bind_case_002(TAOS_STMT *stmt, int tableNum, int rowsOfPerColum, int bingNum, int lenOfBinaryDef, int lenOfBinaryAct, int columnNum) {
+  sampleValue* v = (sampleValue *)calloc(1, sizeof(sampleValue));
+
+  int totalRowsPerTbl = rowsOfPerColum * bingNum;
+
+  v->ts = (int64_t *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * tableNum));
+  v->br = (char *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * lenOfBinaryDef));
+  v->nr = (char *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * lenOfBinaryDef));
+  
+  int *lb = (int *)malloc(MAX_ROWS_OF_PER_COLUMN * sizeof(int));
+  
+  TAOS_MULTI_BIND *params = calloc(1, sizeof(TAOS_MULTI_BIND) * (size_t)(bingNum * columnNum * (tableNum+1) * rowsOfPerColum));
+  char* is_null = malloc(sizeof(char) * MAX_ROWS_OF_PER_COLUMN);
+  char* no_null = malloc(sizeof(char) * MAX_ROWS_OF_PER_COLUMN);
+
+  int64_t tts = 1591060628000;
+
+  for (int i = 0; i < rowsOfPerColum; ++i) {
+    lb[i] = lenOfBinaryAct;
+    no_null[i] = 0;
+    is_null[i] = (i % 10 == 2) ? 1 : 0;
+    v->b[i]  = (int8_t)(i % 2);
+    v->v1[i] = (int8_t)((i+1) % 2);
+    v->v2[i] = (int16_t)i;
+    v->v4[i] = (int32_t)(i+1);
+    v->v8[i] = (int64_t)(i+2);
+    v->f4[i] = (float)(i+3);
+    v->f8[i] = (double)(i+4);
+    char tbuf[MAX_BINARY_DEF_LEN];
+    memset(tbuf, 0, MAX_BINARY_DEF_LEN);
+    sprintf(tbuf, "binary-%d",  i%10);
+    memcpy(v->br + i*lenOfBinaryDef, tbuf, (size_t)lenOfBinaryAct);
+    memset(tbuf, 0, MAX_BINARY_DEF_LEN);
+    sprintf(tbuf, "nchar-%d",  i%10);
+    memcpy(v->nr + i*lenOfBinaryDef, tbuf, (size_t)lenOfBinaryAct);
+    v->ts2[i] = tts + i;
   }
 
-  free(pThreadList);
-  free(threadInfo);
+  int i = 0;
+  for (int j = 0; j < bingNum * tableNum; j++) {
+    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
+    params[i+0].buffer_length = sizeof(int64_t);
+    params[i+0].buffer = &v->ts[j*rowsOfPerColum];
+    params[i+0].length = NULL;
+    params[i+0].is_null = no_null;
+    params[i+0].num = rowsOfPerColum;
+    
+    params[i+1].buffer_type = TSDB_DATA_TYPE_BOOL;
+    params[i+1].buffer_length = sizeof(int8_t);
+    params[i+1].buffer = v->b;
+    params[i+1].length = NULL;
+    params[i+1].is_null = is_null;
+    params[i+1].num = rowsOfPerColum;
+
+    params[i+2].buffer_type = TSDB_DATA_TYPE_INT;
+    params[i+2].buffer_length = sizeof(int32_t);
+    params[i+2].buffer = v->v4;
+    params[i+2].length = NULL;
+    params[i+2].is_null = is_null;
+    params[i+2].num = rowsOfPerColum;
+
+    params[i+3].buffer_type = TSDB_DATA_TYPE_FLOAT;
+    params[i+3].buffer_length = sizeof(float);
+    params[i+3].buffer = v->f4;
+    params[i+3].length = NULL;
+    params[i+3].is_null = is_null;
+    params[i+3].num = rowsOfPerColum;
+
+    params[i+4].buffer_type = TSDB_DATA_TYPE_BINARY;
+    params[i+4].buffer_length = (uintptr_t)lenOfBinaryDef;
+    params[i+4].buffer = v->br;
+    params[i+4].length = lb;
+    params[i+4].is_null = is_null;
+    params[i+4].num = rowsOfPerColum;
+
+    i+=columnNum;
+  }
+
+  //int64_t tts = 1591060628000;
+  for (int i = 0; i < totalRowsPerTbl * tableNum; ++i) {
+    v->ts[i] = tts + i;
+  }
+
+  unsigned long long starttime = getCurrentTime();
+
+// create table m%d (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, br binary(%d), nr nchar(%d), ts2 timestamp)
+  char *sql = "insert into ? (ts,b,v4,f4,br) values(?,?,?,?,?)";
+  int code = taos_stmt_prepare(stmt, sql, 0);
+  if (code != 0){
+    printf("failed to execute taos_stmt_prepare. code:0x%x[%s]\n", code, tstrerror(code));
+    return -1;
+  }
+
+  int id = 0;
+  for (int l = 0; l < bingNum; l++) {
+    for (int zz = 0; zz < tableNum; zz++) {
+      char buf[32];
+      sprintf(buf, "m%d", zz);
+      code = taos_stmt_set_tbname(stmt, buf);
+      if (code != 0){
+        printf("failed to execute taos_stmt_set_tbname. code:0x%x[%s]\n", code, tstrerror(code));
+        return -1;
+      }  
+
+      for (int col=0; col < columnNum; ++col) {
+        code = taos_stmt_bind_single_param_batch(stmt, params + id, col);
+        if (code != 0){
+          printf("failed to execute taos_stmt_bind_single_param_batch. code:0x%x[%s]\n", code, tstrerror(code));
+          return -1;
+        }
+        id++;
+      }
+      
+      code = taos_stmt_add_batch(stmt);
+      if (code != 0) {
+        printf("failed to execute taos_stmt_add_batch. code:0x%x[%s]\n", code, tstrerror(code));
+        return -1;
+      }
+    }
+
+    code = taos_stmt_execute(stmt);
+    if (code != 0) {
+      printf("failed to execute taos_stmt_execute. code:0x%x[%s]\n", code, tstrerror(code));
+      return -1;
+    }
+  }
+
+  unsigned long long endtime = getCurrentTime();
+  unsigned long long totalRows = (uint32_t)(totalRowsPerTbl * tableNum);
+  printf("insert total %d records, used %u seconds, avg:%u useconds per record\n", totalRows, (endtime-starttime)/1000000UL, (endtime-starttime)/totalRows);
+
+  free(v->ts);  
+  free(v->br);  
+  free(v->nr);  
+  free(v);
+  free(lb);
+  free(params);
+  free(is_null);
+  free(no_null);
+
+  return 0;
+}
+
+/*=======================*/
+/*
+test scene:   insert into tb1 (ts,f1) values (?,?)
+*/
+static int stmt_specifyCol_bind_case_001_maxRows(TAOS_STMT *stmt, int tableNum, int rowsOfPerColum, int bingNum, int lenOfBinaryDef, int lenOfBinaryAct, int columnNum) {
+  sampleValue* v = (sampleValue *)calloc(1, sizeof(sampleValue));
+
+  int totalRowsPerTbl = rowsOfPerColum * bingNum;
+
+  v->ts = (int64_t *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * tableNum));
+  v->br = (char *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * lenOfBinaryDef));
+  v->nr = (char *)malloc(sizeof(int64_t) * (size_t)(totalRowsPerTbl * lenOfBinaryDef));
+  
+  int *lb = (int *)malloc(MAX_ROWS_OF_PER_COLUMN * sizeof(int));
+  
+  TAOS_MULTI_BIND *params = calloc(1, sizeof(TAOS_MULTI_BIND) * (size_t)(bingNum * columnNum * (tableNum+1) * rowsOfPerColum));
+  char* is_null = malloc(sizeof(char) * MAX_ROWS_OF_PER_COLUMN);
+  char* no_null = malloc(sizeof(char) * MAX_ROWS_OF_PER_COLUMN);
+
+  int64_t tts = 1591060628000;
+
+  for (int i = 0; i < rowsOfPerColum; ++i) {
+    lb[i] = lenOfBinaryAct;
+    no_null[i] = 0;
+    is_null[i] = (i % 10 == 2) ? 1 : 0;
+    v->b[i]  = (int8_t)(i % 2);
+    v->v1[i] = (int8_t)((i+1) % 2);
+    v->v2[i] = (int16_t)i;
+    v->v4[i] = (int32_t)(i+1);
+    v->v8[i] = (int64_t)(i+2);
+    v->f4[i] = (float)(i+3);
+    v->f8[i] = (double)(i+4);
+    char tbuf[MAX_BINARY_DEF_LEN];
+    memset(tbuf, 0, MAX_BINARY_DEF_LEN);
+    sprintf(tbuf, "binary-%d-0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789",  i%10);
+    memcpy(v->br + i*lenOfBinaryDef, tbuf, (size_t)lenOfBinaryAct);
+    memset(tbuf, 0, MAX_BINARY_DEF_LEN);
+    sprintf(tbuf, "nchar-%d-0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789",  i%10);
+    memcpy(v->nr + i*lenOfBinaryDef, tbuf, (size_t)lenOfBinaryAct);
+    v->ts2[i] = tts + i;
+  }
+
+  int i = 0;
+  for (int j = 0; j < bingNum * tableNum; j++) {
+    params[i+0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
+    params[i+0].buffer_length = sizeof(int64_t);
+    params[i+0].buffer = &v->ts[j*rowsOfPerColum];
+    params[i+0].length = NULL;
+    params[i+0].is_null = no_null;
+    params[i+0].num = rowsOfPerColum;
+    
+    params[i+1].buffer_type = TSDB_DATA_TYPE_INT;
+    params[i+1].buffer_length = sizeof(int32_t);
+    params[i+1].buffer = v->v4;
+    params[i+1].length = NULL;
+    params[i+1].is_null = is_null;
+    params[i+1].num = rowsOfPerColum;
+
+    i+=columnNum;
+  }
+
+  //int64_t tts = 1591060628000;
+  for (int i = 0; i < totalRowsPerTbl * tableNum; ++i) {
+    v->ts[i] = tts + i;
+  }
+
+  unsigned long long starttime = getCurrentTime();
+
+// create table m%d (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, br binary(%d), nr nchar(%d), ts2 timestamp)
+  char *sql = "insert into m0 (ts,b,v4,f4,br) values(?,?,?,?,?)";
+  int code = taos_stmt_prepare(stmt, sql, 0);
+  if (code != 0){
+    printf("failed to execute taos_stmt_prepare. code:0x%x[%s]\n", code, tstrerror(code));
+    return -1;
+  }
+
+  int id = 0;
+  for (int l = 0; l < bingNum; l++) {
+    for (int zz = 0; zz < tableNum; zz++) {
+      //char buf[32];
+      //sprintf(buf, "m%d", zz);
+      //code = taos_stmt_set_tbname(stmt, buf);
+      //if (code != 0){
+      //  printf("failed to execute taos_stmt_set_tbname. code:0x%x[%s]\n", code, tstrerror(code));
+      //  return -1;
+      //}  
+
+      for (int col=0; col < columnNum; ++col) {
+        code = taos_stmt_bind_single_param_batch(stmt, params + id, col);
+        if (code != 0){
+          printf("failed to execute taos_stmt_bind_single_param_batch. code:0x%x[%s]\n", code, tstrerror(code));
+          return -1;
+        }
+        id++;
+      }
+      
+      code = taos_stmt_add_batch(stmt);
+      if (code != 0) {
+        printf("failed to execute taos_stmt_add_batch. code:0x%x[%s]\n", code, tstrerror(code));
+        return -1;
+      }
+    }
+
+    code = taos_stmt_execute(stmt);
+    if (code != 0) {
+      printf("failed to execute taos_stmt_execute. code:0x%x[%s]\n", code, tstrerror(code));
+      return -1;
+    }
+  }
+
+  unsigned long long endtime = getCurrentTime();
+  unsigned long long totalRows = (uint32_t)(totalRowsPerTbl * tableNum);
+  printf("insert total %d records, used %u seconds, avg:%u useconds per record\n", totalRows, (endtime-starttime)/1000000UL, (endtime-starttime)/totalRows);
+
+  free(v->ts);  
+  free(v->br);  
+  free(v->nr);  
+  free(v);
+  free(lb);
+  free(params);
+  free(is_null);
+  free(no_null);
+
+  return 0;
+}
+
+static void SpecifyColumnBatchCase(TAOS *taos) {
+  TAOS_STMT *stmt = NULL;
+
+  int tableNum;
+  int lenOfBinaryDef;
+  int rowsOfPerColum;
+  int bingNum;
+  int lenOfBinaryAct;
+  int columnNum;
+
+  int totalRowsPerTbl;
+
+//=======================================================================//
+//=============================== single table ==========================//
+//========== case 1: ======================//
+#if 1
+{
+  stmt = taos_stmt_init(taos);
+
+  tableNum = 1;
+  rowsOfPerColum = 1;
+  bingNum = 1;
+  lenOfBinaryDef = 40;
+  lenOfBinaryAct = 8;
+  columnNum = 5;
+  
+  prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db1");
+  stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+
+  totalRowsPerTbl = rowsOfPerColum * bingNum;
+  checkResult(taos, "m0", 0, totalRowsPerTbl);
+  taos_stmt_close(stmt);
+  printf("case 1 check result end\n\n");
+}
+#endif  
+
+  //========== case 2: ======================//
+#if 1
+{
+    stmt = taos_stmt_init(taos);
+    
+    tableNum = 1;
+    rowsOfPerColum = 5;
+    bingNum = 1;
+    lenOfBinaryDef = 1000;
+    lenOfBinaryAct = 15;
+    columnNum = 5;
+    
+    prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db2");
+    stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+
+    totalRowsPerTbl = rowsOfPerColum * bingNum;
+    checkResult(taos, "m0", 0, totalRowsPerTbl);
+    //checkResult(taos, "m1", 0, totalRowsPerTbl);
+    //checkResult(taos, "m2", 0, totalRowsPerTbl);  
+    //checkResult(taos, "m3", 0, totalRowsPerTbl);
+    //checkResult(taos, "m4", 0, totalRowsPerTbl);
+    //checkResult(taos, "m5", 0, totalRowsPerTbl);
+    //checkResult(taos, "m6", 0, totalRowsPerTbl);  
+    //checkResult(taos, "m7", 0, totalRowsPerTbl);
+    //checkResult(taos, "m8", 0, totalRowsPerTbl);  
+    //checkResult(taos, "m9", 0, totalRowsPerTbl);
+    taos_stmt_close(stmt);
+    printf("case 2 check result end\n\n");
+}
+#endif  
+
+      //========== case 2-1: ======================//
+#if 1
+    {
+        stmt = taos_stmt_init(taos);
+        
+        tableNum = 1;
+        rowsOfPerColum = 32767;
+        bingNum = 1;
+        lenOfBinaryDef = 1000;
+        lenOfBinaryAct = 15;
+        columnNum = 5;
+        
+        prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db2_1");
+        stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+    
+        totalRowsPerTbl = rowsOfPerColum * bingNum;
+        checkResult(taos, "m0", 0, totalRowsPerTbl);
+        //checkResult(taos, "m1", 0, totalRowsPerTbl);
+        //checkResult(taos, "m2", 0, totalRowsPerTbl);  
+        //checkResult(taos, "m3", 0, totalRowsPerTbl);
+        //checkResult(taos, "m4", 0, totalRowsPerTbl);
+        //checkResult(taos, "m5", 0, totalRowsPerTbl);
+        //checkResult(taos, "m6", 0, totalRowsPerTbl);  
+        //checkResult(taos, "m7", 0, totalRowsPerTbl);
+        //checkResult(taos, "m8", 0, totalRowsPerTbl);  
+        //checkResult(taos, "m9", 0, totalRowsPerTbl);
+        taos_stmt_close(stmt);
+        printf("case 2-1 check result end\n\n");
+    }
+#endif  
+          //========== case 2-2: ======================//
+#if 1
+        {
+            printf("====case 2-2 error test start\n");
+            stmt = taos_stmt_init(taos);
+            
+            tableNum = 1;
+            rowsOfPerColum = 32768;
+            bingNum = 1;
+            lenOfBinaryDef = 1000;
+            lenOfBinaryAct = 15;
+            columnNum = 5;
+            
+            prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db2_2");
+            stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+        
+            totalRowsPerTbl = rowsOfPerColum * bingNum;
+            checkResult(taos, "m0", 0, totalRowsPerTbl);
+            //checkResult(taos, "m1", 0, totalRowsPerTbl);
+            //checkResult(taos, "m2", 0, totalRowsPerTbl);  
+            //checkResult(taos, "m3", 0, totalRowsPerTbl);
+            //checkResult(taos, "m4", 0, totalRowsPerTbl);
+            //checkResult(taos, "m5", 0, totalRowsPerTbl);
+            //checkResult(taos, "m6", 0, totalRowsPerTbl);  
+            //checkResult(taos, "m7", 0, totalRowsPerTbl);
+            //checkResult(taos, "m8", 0, totalRowsPerTbl);  
+            //checkResult(taos, "m9", 0, totalRowsPerTbl);
+            taos_stmt_close(stmt);
+            printf("====case 2-2 check result end\n\n");
+        }
+#endif  
+
+
+    //========== case 3: ======================//
+#if 1
+  {
+      stmt = taos_stmt_init(taos);
+      
+      tableNum = 1;
+      rowsOfPerColum = 1;
+      bingNum = 5;
+      lenOfBinaryDef = 1000;
+      lenOfBinaryAct = 20;
+      columnNum = 5;
+      
+      prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db3");
+      stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+  
+      totalRowsPerTbl = rowsOfPerColum * bingNum;
+      checkResult(taos, "m0", 0, totalRowsPerTbl);
+    //checkResult(taos, "m1", 0, totalRowsPerTbl);
+    //checkResult(taos, "m2", 0, totalRowsPerTbl);  
+    //checkResult(taos, "m3", 0, totalRowsPerTbl);
+    //checkResult(taos, "m4", 0, totalRowsPerTbl);
+    //checkResult(taos, "m5", 0, totalRowsPerTbl);
+    //checkResult(taos, "m6", 0, totalRowsPerTbl);  
+    //checkResult(taos, "m7", 0, totalRowsPerTbl);
+    //checkResult(taos, "m8", 0, totalRowsPerTbl);  
+    //checkResult(taos, "m9", 0, totalRowsPerTbl);
+      taos_stmt_close(stmt);
+      printf("case 3 check result end\n\n");
+  }
+#endif  
+
+      //========== case 4: ======================//
+#if 1
+    {
+        stmt = taos_stmt_init(taos);
+        
+        tableNum = 1;
+        rowsOfPerColum = 5;
+        bingNum = 5;
+        lenOfBinaryDef = 1000;
+        lenOfBinaryAct = 33;
+        columnNum = 5;
+        
+        prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db4");
+        stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+    
+        totalRowsPerTbl = rowsOfPerColum * bingNum;
+        checkResult(taos, "m0", 0, totalRowsPerTbl);
+      //checkResult(taos, "m1", 0, totalRowsPerTbl);
+      //checkResult(taos, "m2", 0, totalRowsPerTbl);  
+      //checkResult(taos, "m3", 0, totalRowsPerTbl);
+      //checkResult(taos, "m4", 0, totalRowsPerTbl);
+      //checkResult(taos, "m5", 0, totalRowsPerTbl);
+      //checkResult(taos, "m6", 0, totalRowsPerTbl);  
+      //checkResult(taos, "m7", 0, totalRowsPerTbl);
+      //checkResult(taos, "m8", 0, totalRowsPerTbl);  
+      //checkResult(taos, "m9", 0, totalRowsPerTbl);
+        taos_stmt_close(stmt);
+        printf("case 4 check result end\n\n");
+    }
+#endif  
+
+//=======================================================================//
+//=============================== multi tables ==========================//
+  //========== case 5: ======================//
+#if 1
+  {
+    stmt = taos_stmt_init(taos);
+  
+    tableNum = 5;
+    rowsOfPerColum = 1;
+    bingNum = 1;
+    lenOfBinaryDef = 40;
+    lenOfBinaryAct = 16;
+    columnNum = 5;
+    
+    prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db5");
+    stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+  
+    totalRowsPerTbl = rowsOfPerColum * bingNum;
+    checkResult(taos, "m0", 0, totalRowsPerTbl);
+    checkResult(taos, "m1", 0, totalRowsPerTbl);
+    checkResult(taos, "m2", 0, totalRowsPerTbl);  
+    checkResult(taos, "m3", 0, totalRowsPerTbl);
+    checkResult(taos, "m4", 0, totalRowsPerTbl);
+    taos_stmt_close(stmt);
+    printf("case 5 check result end\n\n");
+  }
+#endif  
+  
+    //========== case 6: ======================//
+#if 1
+  {
+      stmt = taos_stmt_init(taos);
+      
+      tableNum = 5;
+      rowsOfPerColum = 5;
+      bingNum = 1;
+      lenOfBinaryDef = 1000;
+      lenOfBinaryAct = 20;
+      columnNum = 5;
+      
+      prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db6");
+      stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+  
+      totalRowsPerTbl = rowsOfPerColum * bingNum;
+      checkResult(taos, "m0", 0, totalRowsPerTbl);
+      checkResult(taos, "m1", 0, totalRowsPerTbl);
+      checkResult(taos, "m2", 0, totalRowsPerTbl);  
+      checkResult(taos, "m3", 0, totalRowsPerTbl);
+      checkResult(taos, "m4", 0, totalRowsPerTbl);
+      taos_stmt_close(stmt);
+      printf("case 6 check result end\n\n");
+  }
+#endif  
+  
+      //========== case 7: ======================//
+#if 1
+    {
+        stmt = taos_stmt_init(taos);
+        
+        tableNum = 5;
+        rowsOfPerColum = 1;
+        bingNum = 5;
+        lenOfBinaryDef = 1000;
+        lenOfBinaryAct = 33;
+        columnNum = 5;
+        
+        prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db7");
+        stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+    
+        totalRowsPerTbl = rowsOfPerColum * bingNum;
+        checkResult(taos, "m0", 0, totalRowsPerTbl);
+        checkResult(taos, "m1", 0, totalRowsPerTbl);
+        checkResult(taos, "m2", 0, totalRowsPerTbl);  
+        checkResult(taos, "m3", 0, totalRowsPerTbl);
+        checkResult(taos, "m4", 0, totalRowsPerTbl);
+        taos_stmt_close(stmt);
+        printf("case 7 check result end\n\n");
+    }
+#endif  
+  
+        //========== case 8: ======================//
+#if 1
+{
+    stmt = taos_stmt_init(taos);
+    
+    tableNum = 5;
+    rowsOfPerColum = 5;
+    bingNum = 5;
+    lenOfBinaryDef = 1000;
+    lenOfBinaryAct = 40;
+    columnNum = 5;
+    
+    prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db8");
+    stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+
+    totalRowsPerTbl = rowsOfPerColum * bingNum;
+    checkResult(taos, "m0", 0, totalRowsPerTbl);
+    checkResult(taos, "m1", 0, totalRowsPerTbl);
+    checkResult(taos, "m2", 0, totalRowsPerTbl);  
+    checkResult(taos, "m3", 0, totalRowsPerTbl);
+    checkResult(taos, "m4", 0, totalRowsPerTbl);
+    taos_stmt_close(stmt);
+    printf("case 8 check result end\n\n");
+}
+#endif  
+
+  //=======================================================================//
+  //=============================== multi-rows to single table ==========================//
+  //========== case 9: ======================//
+#if 1
+  {
+    stmt = taos_stmt_init(taos);
+  
+    tableNum = 1;
+    rowsOfPerColum = 23740;
+    bingNum = 1;
+    lenOfBinaryDef = 40;
+    lenOfBinaryAct = 8;
+    columnNum = 5;
+    
+    prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db9");
+    stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+  
+    totalRowsPerTbl = rowsOfPerColum * bingNum;
+    checkResult(taos, "m0", 0, totalRowsPerTbl);
+    taos_stmt_close(stmt);
+    printf("case 9 check result end\n\n");
+  }
+#endif  
+
+    //========== case 10: ======================//
+#if 0
+    {
+      printf("====case 10 error test start\n");
+      stmt = taos_stmt_init(taos);
+    
+      tableNum = 1;
+      rowsOfPerColum = 23741;  // WAL size exceeds limit
+      bingNum = 1;
+      lenOfBinaryDef = 40;
+      lenOfBinaryAct = 8;
+      columnNum = 5;
+      
+      prepareV(taos, 1, tableNum, lenOfBinaryDef);
+      stmt_specifyCol_bind_case_001(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+    
+      totalRowsPerTbl = rowsOfPerColum * bingNum;
+      checkResult(taos, "m0", 0, totalRowsPerTbl);
+      taos_stmt_close(stmt);
+      printf("====case 10 check result end\n\n");
+    }
+#endif  
+
+
+  //=======================================================================//
+  //=============================== multi tables, multi bind one same table ==========================//
+    //========== case 13: ======================//
+#if 1
+    {
+      stmt = taos_stmt_init(taos);
+    
+      tableNum = 5;
+      rowsOfPerColum = 1;
+      bingNum = 5;
+      lenOfBinaryDef = 40;
+      lenOfBinaryAct = 28;
+      columnNum = 5;
+      
+      prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db13");
+      stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+    
+      totalRowsPerTbl = rowsOfPerColum * bingNum;
+      checkResult(taos, "m0", 0, totalRowsPerTbl);
+      checkResult(taos, "m1", 0, totalRowsPerTbl);
+      checkResult(taos, "m2", 0, totalRowsPerTbl);  
+      checkResult(taos, "m3", 0, totalRowsPerTbl);
+      checkResult(taos, "m4", 0, totalRowsPerTbl);
+      taos_stmt_close(stmt);
+      printf("case 13 check result end\n\n");
+    }
+#endif  
+    
+      //========== case 14: ======================//
+#if 1
+    {
+        stmt = taos_stmt_init(taos);
+        
+        tableNum = 5;
+        rowsOfPerColum = 5;
+        bingNum = 5;
+        lenOfBinaryDef = 1000;
+        lenOfBinaryAct = 33;
+        columnNum = 5;
+        
+        prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db14");
+        stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+    
+        totalRowsPerTbl = rowsOfPerColum * bingNum;
+        checkResult(taos, "m0", 0, totalRowsPerTbl);
+        checkResult(taos, "m1", 0, totalRowsPerTbl);
+        checkResult(taos, "m2", 0, totalRowsPerTbl);  
+        checkResult(taos, "m3", 0, totalRowsPerTbl);
+        checkResult(taos, "m4", 0, totalRowsPerTbl);
+        taos_stmt_close(stmt);
+        printf("case 14 check result end\n\n");
+    }
+#endif  
+
+    
+  //========== case 15: ======================//
+#if 1
+  {
+      stmt = taos_stmt_init(taos);
+      
+      tableNum = 1000;
+      rowsOfPerColum = 10;
+      bingNum = 5;
+      lenOfBinaryDef = 1000;
+      lenOfBinaryAct = 8;
+      columnNum = 5;
+      
+      prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db15");
+      stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+  
+      totalRowsPerTbl = rowsOfPerColum * bingNum;
+      checkResult(taos, "m0", 0, totalRowsPerTbl);
+      checkResult(taos, "m111", 0, totalRowsPerTbl);
+      checkResult(taos, "m222", 0, totalRowsPerTbl);  
+      checkResult(taos, "m333", 0, totalRowsPerTbl);
+      checkResult(taos, "m500", 0, totalRowsPerTbl);  
+      checkResult(taos, "m999", 0, totalRowsPerTbl);
+      taos_stmt_close(stmt);
+      printf("case 15 check result end\n\n");
+  }
+#endif  
+
+    //========== case 17: ======================//
+#if 1
+    {
+        //printf("case 17 test start\n");
+        stmt = taos_stmt_init(taos);
+        
+        tableNum = 10;
+        rowsOfPerColum = 100;
+        bingNum = 1;
+        lenOfBinaryDef = 100;
+        lenOfBinaryAct = 8;
+        columnNum = 5;
+        
+        prepareVcolumn(taos, 1, tableNum, lenOfBinaryDef, "db17");
+        stmt_specifyCol_bind_case_002(stmt, tableNum, rowsOfPerColum, bingNum, lenOfBinaryDef, lenOfBinaryAct, columnNum);
+    
+        totalRowsPerTbl = rowsOfPerColum * bingNum;
+        checkResult(taos, "m0", 0, totalRowsPerTbl);
+        checkResult(taos, "m3", 0, totalRowsPerTbl);
+        checkResult(taos, "m5", 0, totalRowsPerTbl);  
+        checkResult(taos, "m8", 0, totalRowsPerTbl);
+        checkResult(taos, "m9", 0, totalRowsPerTbl);
+        taos_stmt_close(stmt);
+        printf("case 17 check result end\n\n");
+    }
+#endif 
+
+  return ;
+
+}
+
+int main(int argc, char *argv[])
+{
+  TAOS *taos;
+  char  host[32] = "127.0.0.1";
+  char* serverIp = NULL;
+  int   threadNum = 1;
+  
+  // connect to server
+  if (argc == 1) {
+    serverIp = host;
+  } else if (argc == 2) {
+    serverIp = argv[1];
+  } else if (argc == 3) {
+    serverIp = argv[1];
+    threadNum = atoi(argv[2]);
+  } else if (argc == 4) {
+    serverIp = argv[1];
+    threadNum = atoi(argv[2]);
+    g_runTimes = atoi(argv[3]);
+  }
+
+  printf("server:%s, runTimes:%d\n\n", serverIp, g_runTimes);
+
+#if 0
+  printf("server:%s, threadNum:%d, rows:%d\n\n", serverIp, threadNum, g_rows);
+
+  pthread_t *pThreadList = (pthread_t *) calloc(sizeof(pthread_t), (size_t)threadNum);
+  ThreadInfo* threadInfo = (ThreadInfo *) calloc(sizeof(ThreadInfo), (size_t)threadNum);
+
+  ThreadInfo*  tInfo = threadInfo;
+  for (int i = 0; i < threadNum; i++) {
+    taos = taos_connect(serverIp, "root", "taosdata", NULL, 0);
+    if (taos == NULL) {
+      printf("failed to connect to TDengine, reason:%s\n", taos_errstr(taos));
+      return -1;
+    }   
+
+    tInfo->taos = taos;
+    tInfo->idx = i;
+    if (0 == i) {
+      //pthread_create(&(pThreadList[0]), NULL, runCase, (void *)tInfo);      
+      pthread_create(&(pThreadList[0]), NULL, SpecifyColumnBatchCase, (void *)tInfo);
+    } else if (1 == i){
+      pthread_create(&(pThreadList[0]), NULL, runCase_long, (void *)tInfo);
+    }
+    tInfo++;
+  }
+
+  for (int i = 0; i < threadNum; i++) {
+    pthread_join(pThreadList[i], NULL);
+  }
+
+  free(pThreadList);
+  free(threadInfo);
+#endif
+
+  taos = taos_connect(serverIp, "root", "taosdata", NULL, 0);
+  if (taos == NULL) {
+    printf("failed to connect to TDengine, reason:%s\n", taos_errstr(taos));
+    return -1;
+  }   
+
+  runCase(taos);
+  runCase_long(taos);
+  SpecifyColumnBatchCase(taos);
+  
   return 0;
 }