Merge branch 'develop' into feature/sangshuduo/snap

documentation20/webdocs/markdowndocs/administrator-ch.md

@@ -47,6 +47,8 @@ Raw DataSize = numOfTables * rowSizePerTable * rowsPerTable
 
 因为TDengine具有很好的水平扩展能力，根据总量，再根据单个物理机或虚拟机的资源，就可以轻松决定需要购置多少台物理机或虚拟机了。
 
+**立即计算CPU、内存、存储，请参见：<a href='https://www.taosdata.com/config/config.html'>资源估算方法</a>**
+
 ## 容错和灾备
 
 ### 容错

documentation20/webdocs/markdowndocs/architecture-ch.md

@@ -162,7 +162,7 @@ Master Vnode遵循下面的写入流程：
 
 <center> 图 3 TDengine Master写入流程  </center>
 1. Master vnode收到应用的数据插入请求，验证OK，进入下一步；
-2. 如果系统配置参数walLevel打开（设置为2），vnode将把该请求的原始数据包写入数据库日志文件WAL，以保证TDengine能够在断电等因素导致的服务重启时从数据库日志文件中恢复数据，避免数据的丢失；
+2. 如果系统配置参数walLevel大于0，vnode将把该请求的原始数据包写入数据库日志文件WAL。如果walLevel设置为2，而且fsync设置为0，TDengine还将WAL数据立即落盘，以保证即使宕机，也能从数据库日志文件中恢复数据，避免数据的丢失；
 3. 如果有多个副本，vnode将把数据包转发给同一虚拟节点组内slave vnodes, 该转发包带有数据的版本号(version)；
 4. 写入内存，并加记录加入到skip list；
 5. Master vnode返回确认信息给应用，表示写入成功。
@@ -174,7 +174,7 @@ Master Vnode遵循下面的写入流程：
 
 <center> 图 4 TDengine Slave写入流程  </center>
 1. Slave vnode收到Master vnode转发了的数据插入请求。
-2. 如果系统配置参数walLevl设置为2，vnode将把该请求的原始数据包写入日志(WAL)；
+2. 如果系统配置参数walLevel大于0，vnode将把该请求的原始数据包写入数据库日志文件WAL。如果walLevel设置为2，而且fsync设置为0，TDengine还将WAL数据立即落盘，以保证即使宕机，也能从数据库日志文件中恢复数据，避免数据的丢失；
 3. 写入内存，更新内存中的skip list。
 
 与Master vnode相比，slave vnode不存在转发环节，也不存在回复确认环节，少了两步。但写内存与WAL是完全一样的。

src/client/inc/tsclient.h

@@ -399,7 +399,7 @@ int tsParseSql(SSqlObj *pSql, bool initial);
 void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcEpSet *pEpSet);
 int  tscProcessSql(SSqlObj *pSql);
 
-int  tscRenewTableMeta(SSqlObj *pSql, char *tableId);
+int  tscRenewTableMeta(SSqlObj *pSql, int32_t tableIndex);
 void tscQueueAsyncRes(SSqlObj *pSql);
 
 void tscQueueAsyncError(void(*fp), void *param, int32_t code);
@@ -414,7 +414,7 @@ void    tscRestoreSQLFuncForSTableQuery(SQueryInfo *pQueryInfo);
 int32_t tscCreateResPointerInfo(SSqlRes *pRes, SQueryInfo *pQueryInfo);
 void    tscDestroyResPointerInfo(SSqlRes *pRes);
 
-void tscResetSqlCmdObj(SSqlCmd *pCmd);
+void tscResetSqlCmdObj(SSqlCmd *pCmd, bool removeFromCache);
 
 /**
  * free query result of the sql object

src/client/src/tscAsync.c

@@ -468,7 +468,7 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
         if (pCmd->command == TSDB_SQL_INSERT || pCmd->command == TSDB_SQL_SELECT) {
           tscDebug("%p redo parse sql string and proceed", pSql);
           pCmd->parseFinished = false;
-          tscResetSqlCmdObj(pCmd);
+          tscResetSqlCmdObj(pCmd, false);
 
           code = tsParseSql(pSql, true);
 

src/client/src/tscParseInsert.c

@@ -1327,18 +1327,40 @@ int tsParseSql(SSqlObj *pSql, bool initial) {
       pSql->fetchFp = pSql->fp;
       pSql->fp = (void(*)())tscHandleMultivnodeInsert;
     }
-    
+
     if (initial && ((ret = tsInsertInitialCheck(pSql)) != TSDB_CODE_SUCCESS)) {
       return ret;
     }
-    
+
+    // make a backup as tsParseInsertSql may modify the string
+    char* sqlstr = strdup(pSql->sqlstr);
     ret = tsParseInsertSql(pSql);
+    if (sqlstr == NULL || pSql->retry >= 1 || ret != TSDB_CODE_TSC_INVALID_SQL) {
+      free(sqlstr);
+    } else {
+      tscResetSqlCmdObj(pCmd, true);
+      free(pSql->sqlstr);
+      pSql->sqlstr = sqlstr;
+      pSql->retry++;
+      if ((ret = tsInsertInitialCheck(pSql)) == TSDB_CODE_SUCCESS) {
+        ret = tsParseInsertSql(pSql);
+      }
+    }
   } else {
     SSqlInfo SQLInfo = qSQLParse(pSql->sqlstr);
     ret = tscToSQLCmd(pSql, &SQLInfo);
+    if (ret == TSDB_CODE_TSC_INVALID_SQL && pSql->retry == 0 && SQLInfo.type == TSDB_SQL_NULL) {
+      tscResetSqlCmdObj(pCmd, true);
+      pSql->retry++;
+      ret = tscToSQLCmd(pSql, &SQLInfo);
+    }
     SQLInfoDestroy(&SQLInfo);
   }
 
+  if (ret == TSDB_CODE_SUCCESS) {
+    pSql->retry = 0;
+  }
+
   /*
    * the pRes->code may be modified or released by another thread in tscTableMetaCallBack function,
    * so do NOT use pRes->code to determine if the getTableMeta function

src/client/src/tscServer.c

@@ -276,8 +276,6 @@ void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcEpSet *pEpSet) {
     }
   }
 
-  STableMetaInfo *pTableMetaInfo = tscGetTableMetaInfoFromCmd(pCmd, pCmd->clauseIndex, 0);
-
   int32_t cmd = pCmd->command;
   if ((cmd == TSDB_SQL_SELECT || cmd == TSDB_SQL_FETCH || cmd == TSDB_SQL_INSERT || cmd == TSDB_SQL_UPDATE_TAGS_VAL) &&
       (rpcMsg->code == TSDB_CODE_TDB_INVALID_TABLE_ID ||
@@ -302,7 +300,7 @@ void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcEpSet *pEpSet) {
         taosMsleep(duration);
       }
 
-      rpcMsg->code = tscRenewTableMeta(pSql, pTableMetaInfo->name);
+      rpcMsg->code = tscRenewTableMeta(pSql, 0);
 
       // if there is an error occurring, proceed to the following error handling procedure.
       if (rpcMsg->code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) {
@@ -2202,14 +2200,14 @@ int tscGetMeterMetaEx(SSqlObj *pSql, STableMetaInfo *pTableMetaInfo, bool create
 /**
  * retrieve table meta from mnode, and update the local table meta cache.
  * @param pSql          sql object
- * @param tableId       table full name
+ * @param tableIndex    table index
  * @return              status code
  */
-int tscRenewTableMeta(SSqlObj *pSql, char *tableId) {
+int tscRenewTableMeta(SSqlObj *pSql, int32_t tableIndex) {
   SSqlCmd *pCmd = &pSql->cmd;
 
   SQueryInfo *    pQueryInfo = tscGetQueryInfoDetail(pCmd, 0);
-  STableMetaInfo *pTableMetaInfo = tscGetMetaInfo(pQueryInfo, 0);
+  STableMetaInfo *pTableMetaInfo = tscGetMetaInfo(pQueryInfo, tableIndex);
 
   STableMeta* pTableMeta = pTableMetaInfo->pTableMeta;
   if (pTableMetaInfo->pTableMeta) {

src/client/src/tscSql.c

@@ -820,7 +820,7 @@ int taos_validate_sql(TAOS *taos, const char *sql) {
 
 static int tscParseTblNameList(SSqlObj *pSql, const char *tblNameList, int32_t tblListLen) {
   // must before clean the sqlcmd object
-  tscResetSqlCmdObj(&pSql->cmd);
+  tscResetSqlCmdObj(&pSql->cmd, false);
 
   SSqlCmd *pCmd = &pSql->cmd;
 

src/client/src/tscUtil.c

@@ -33,7 +33,7 @@
 static void freeQueryInfoImpl(SQueryInfo* pQueryInfo);
 static void clearAllTableMetaInfo(SQueryInfo* pQueryInfo, const char* address, bool removeFromCache);
 
-  SCond* tsGetSTableQueryCond(STagCond* pTagCond, uint64_t uid) {
+SCond* tsGetSTableQueryCond(STagCond* pTagCond, uint64_t uid) {
   if (pTagCond->pCond == NULL) {
     return NULL;
   }
@@ -294,7 +294,7 @@ void tscDestroyResPointerInfo(SSqlRes* pRes) {
   pRes->data = NULL;  // pRes->data points to the buffer of pRsp, no need to free
 }
 
-static void tscFreeQueryInfo(SSqlCmd* pCmd) {
+static void tscFreeQueryInfo(SSqlCmd* pCmd, bool removeFromCache) {
   if (pCmd == NULL || pCmd->numOfClause == 0) {
     return;
   }
@@ -304,7 +304,7 @@ static void tscFreeQueryInfo(SSqlCmd* pCmd) {
     SQueryInfo* pQueryInfo = tscGetQueryInfoDetail(pCmd, i);
     
     freeQueryInfoImpl(pQueryInfo);
-    clearAllTableMetaInfo(pQueryInfo, (const char*)addr, false);
+    clearAllTableMetaInfo(pQueryInfo, (const char*)addr, removeFromCache);
     taosTFree(pQueryInfo);
   }
   
@@ -312,7 +312,7 @@ static void tscFreeQueryInfo(SSqlCmd* pCmd) {
   taosTFree(pCmd->pQueryInfo);
 }
 
-void tscResetSqlCmdObj(SSqlCmd* pCmd) {
+void tscResetSqlCmdObj(SSqlCmd* pCmd, bool removeFromCache) {
   pCmd->command   = 0;
   pCmd->numOfCols = 0;
   pCmd->count     = 0;
@@ -326,7 +326,7 @@ void tscResetSqlCmdObj(SSqlCmd* pCmd) {
   
   pCmd->pDataBlocks = tscDestroyBlockArrayList(pCmd->pDataBlocks);
   
-  tscFreeQueryInfo(pCmd);
+  tscFreeQueryInfo(pCmd, removeFromCache);
 }
 
 void tscFreeSqlResult(SSqlObj* pSql) {
@@ -364,7 +364,7 @@ void tscPartiallyFreeSqlObj(SSqlObj* pSql) {
   taosTFree(pSql->pSubs);
   pSql->numOfSubs = 0;
   
-  tscResetSqlCmdObj(pCmd);
+  tscResetSqlCmdObj(pCmd, false);
 }
 
 void tscFreeSqlObj(SSqlObj* pSql) {

src/query/src/qExecutor.c

@@ -1951,36 +1951,36 @@ static void changeExecuteScanOrder(SQInfo *pQInfo, SQueryTableMsg* pQueryMsg, bo
 
   // todo handle the case the the order irrelevant query type mixed up with order critical query type
   // descending order query for last_row query
-  if (isFirstLastRowQuery(pQuery)) {
+  if (isFirstLastRowQuery(pQuery) && !QUERY_IS_ASC_QUERY(pQuery)) {
     qDebug("QInfo:%p scan order changed for last_row query, old:%d, new:%d", GET_QINFO_ADDR(pQuery),
            pQuery->order.order, TSDB_ORDER_ASC);
 
+    SWAP(pQuery->window.skey, pQuery->window.ekey, TSKEY);
     pQuery->order.order = TSDB_ORDER_ASC;
-    if (pQuery->window.skey > pQuery->window.ekey) {
-      SWAP(pQuery->window.skey, pQuery->window.ekey, TSKEY);
-    }
+    assert (pQuery->window.skey <= pQuery->window.ekey);
 
+    doExchangeTimeWindow(pQInfo, &pQuery->window);
     return;
   }
 
-  if (isGroupbyNormalCol(pQuery->pGroupbyExpr) && pQuery->order.order == TSDB_ORDER_DESC) {
+  if (isGroupbyNormalCol(pQuery->pGroupbyExpr) && !QUERY_IS_ASC_QUERY(pQuery)) {
     pQuery->order.order = TSDB_ORDER_ASC;
-    if (pQuery->window.skey > pQuery->window.ekey) {
-      SWAP(pQuery->window.skey, pQuery->window.ekey, TSKEY);
-    }
+    SWAP(pQuery->window.skey, pQuery->window.ekey, TSKEY);
+    assert (pQuery->window.skey <= pQuery->window.ekey);
 
     doExchangeTimeWindow(pQInfo, &pQuery->window);
     return;
   }
 
-  if (isPointInterpoQuery(pQuery) && pQuery->intervalTime == 0) {
-    if (!QUERY_IS_ASC_QUERY(pQuery)) {
-      qDebug(msg, GET_QINFO_ADDR(pQuery), "interp", pQuery->order.order, TSDB_ORDER_ASC, pQuery->window.skey,
-             pQuery->window.ekey, pQuery->window.ekey, pQuery->window.skey);
-      SWAP(pQuery->window.skey, pQuery->window.ekey, TSKEY);
-    }
+  if (isPointInterpoQuery(pQuery) && (pQuery->intervalTime == 0) && !QUERY_IS_ASC_QUERY(pQuery)) {
+    qDebug(msg, GET_QINFO_ADDR(pQuery), "interp", pQuery->order.order, TSDB_ORDER_ASC, pQuery->window.skey,
+           pQuery->window.ekey, pQuery->window.ekey, pQuery->window.skey);
+    SWAP(pQuery->window.skey, pQuery->window.ekey, TSKEY);
 
     pQuery->order.order = TSDB_ORDER_ASC;
+
+    assert (pQuery->window.skey <= pQuery->window.ekey);
+    doExchangeTimeWindow(pQInfo, &pQuery->window);
     return;
   }
 
@@ -2920,11 +2920,11 @@ int32_t mergeIntoGroupResultImpl(SQInfo *pQInfo, SArray *pGroup) {
     STableQueryInfo *item = taosArrayGetP(pGroup, i);
 
     SIDList list = getDataBufPagesIdList(pRuntimeEnv->pResultBuf, TSDB_TABLEID(item->pTable)->tid);
-    pageList = list;
-    tid = TSDB_TABLEID(item->pTable)->tid;
 
     if (taosArrayGetSize(list) > 0 && item->windowResInfo.size > 0) {
       pTableList[numOfTables++] = item;
+      tid = TSDB_TABLEID(item->pTable)->tid;
+      pageList = list;
     }
   }
 
@@ -4354,6 +4354,32 @@ static bool skipTimeInterval(SQueryRuntimeEnv *pRuntimeEnv, TSKEY* start) {
   return true;
 }
 
+static void freeTableQueryInfo(STableGroupInfo* pTableGroupInfo) {
+  if (pTableGroupInfo->pGroupList == NULL) {
+    assert(pTableGroupInfo->numOfTables == 0);
+  } else {
+    size_t numOfGroups = taosArrayGetSize(pTableGroupInfo->pGroupList);
+    for (int32_t i = 0; i < numOfGroups; ++i) {
+      SArray *p = taosArrayGetP(pTableGroupInfo->pGroupList, i);
+
+      size_t num = taosArrayGetSize(p);
+      for(int32_t j = 0; j < num; ++j) {
+        STableQueryInfo* item = taosArrayGetP(p, j);
+        destroyTableQueryInfo(item);
+      }
+
+      taosArrayDestroy(p);
+    }
+
+    taosArrayDestroy(pTableGroupInfo->pGroupList);
+    pTableGroupInfo->pGroupList = NULL;
+    pTableGroupInfo->numOfTables = 0;
+  }
+
+  taosHashCleanup(pTableGroupInfo->map);
+  pTableGroupInfo->map = NULL;
+}
+
 static int32_t setupQueryHandle(void* tsdb, SQInfo* pQInfo, bool isSTableQuery) {
   SQueryRuntimeEnv *pRuntimeEnv = &pQInfo->runtimeEnv;
   SQuery *pQuery = pQInfo->runtimeEnv.pQuery;
@@ -4389,20 +4415,22 @@ static int32_t setupQueryHandle(void* tsdb, SQInfo* pQInfo, bool isSTableQuery)
   terrno = TSDB_CODE_SUCCESS;
   if (isFirstLastRowQuery(pQuery)) {
     pRuntimeEnv->pQueryHandle = tsdbQueryLastRow(tsdb, &cond, &pQInfo->tableGroupInfo, pQInfo);
+    if (pRuntimeEnv->pQueryHandle == NULL) {  // no data in current stable, clear all
+      freeTableQueryInfo(&pQInfo->tableqinfoGroupInfo);
+    } else { // update the query time window
+      pQuery->window = cond.twindow;
 
-    // update the query time window
-    pQuery->window = cond.twindow;
+      size_t numOfGroups = GET_NUM_OF_TABLEGROUP(pQInfo);
+      for (int32_t i = 0; i < numOfGroups; ++i) {
+        SArray *group = GET_TABLEGROUP(pQInfo, i);
 
-    size_t numOfGroups = GET_NUM_OF_TABLEGROUP(pQInfo);
-    for(int32_t i = 0; i < numOfGroups; ++i) {
-      SArray *group = GET_TABLEGROUP(pQInfo, i);
-
-      size_t t = taosArrayGetSize(group);
-      for (int32_t j = 0; j < t; ++j) {
-        STableQueryInfo *pCheckInfo = taosArrayGetP(group, j);
+        size_t t = taosArrayGetSize(group);
+        for (int32_t j = 0; j < t; ++j) {
+          STableQueryInfo *pCheckInfo = taosArrayGetP(group, j);
 
-        pCheckInfo->win = pQuery->window;
-        pCheckInfo->lastKey = pCheckInfo->win.skey;
+          pCheckInfo->win = pQuery->window;
+          pCheckInfo->lastKey = pCheckInfo->win.skey;
+        }
       }
     }
   } else if (isPointInterpoQuery(pQuery)) {
@@ -4456,6 +4484,12 @@ int32_t doInitQInfo(SQInfo *pQInfo, STSBuf *pTsBuf, void *tsdb, int32_t vgId, bo
     return code;
   }
 
+  if (pQInfo->tableqinfoGroupInfo.numOfTables == 0) {
+    qDebug("QInfo:%p no table qualified for tag filter, abort query", pQInfo);
+    setQueryStatus(pQuery, QUERY_COMPLETED);
+    return TSDB_CODE_SUCCESS;
+  }
+
   pQInfo->tsdb = tsdb;
   pQInfo->vgId = vgId;
 
@@ -6349,29 +6383,13 @@ static void freeQInfo(SQInfo *pQInfo) {
     taosTFree(pQuery);
   }
 
-  // todo refactor, extract method to destroytableDataInfo
-  if (pQInfo->tableqinfoGroupInfo.pGroupList != NULL) {
-    int32_t numOfGroups = (int32_t)(GET_NUM_OF_TABLEGROUP(pQInfo));
-    for (int32_t i = 0; i < numOfGroups; ++i) {
-      SArray *p = GET_TABLEGROUP(pQInfo, i);
-
-      size_t num = taosArrayGetSize(p);
-      for(int32_t j = 0; j < num; ++j) {
-        STableQueryInfo* item = taosArrayGetP(p, j);
-        destroyTableQueryInfo(item);
-      }
-
-      taosArrayDestroy(p);
-    }
-  }
+  freeTableQueryInfo(&pQInfo->tableqinfoGroupInfo);
 
   taosTFree(pQInfo->pBuf);
-  taosArrayDestroy(pQInfo->tableqinfoGroupInfo.pGroupList);
-  taosHashCleanup(pQInfo->tableqinfoGroupInfo.map);
+
   tsdbDestroyTableGroup(&pQInfo->tableGroupInfo);
   taosArrayDestroy(pQInfo->arrTableIdInfo);
 
-
   pQInfo->signature = 0;
 
   qDebug("QInfo:%p QInfo is freed", pQInfo);

src/query/src/qPercentile.c

@@ -154,9 +154,14 @@ int32_t tBucketBigIntHash(tMemBucket *pBucket, const void *value) {
 
 // todo refactor to more generic
 int32_t tBucketIntHash(tMemBucket *pBucket, const void *value) {
-  int32_t v = *(int32_t *)value;
-  int32_t index = -1;
+  int32_t v = 0;
+  switch(pBucket->type) {
+    case TSDB_DATA_TYPE_SMALLINT: v = *(int16_t*) value; break;
+    case TSDB_DATA_TYPE_TINYINT: v = *(int8_t*) value; break;
+    default: v = *(int32_t*) value;break;
+  }
 
+  int32_t index = -1;
   if (pBucket->range.iMaxVal == INT32_MIN) {
     /*
      * taking negative integer into consideration,

src/tsdb/src/tsdbRead.c

@@ -295,9 +295,16 @@ out_of_memory:
 }
 
 TsdbQueryHandleT tsdbQueryLastRow(TSDB_REPO_T *tsdb, STsdbQueryCond *pCond, STableGroupInfo *groupList, void* qinfo) {
-  pCond->order = TSDB_ORDER_ASC;
   pCond->twindow = changeTableGroupByLastrow(groupList);
+
+  // no qualified table
+  if (groupList->numOfTables == 0) {
+    return NULL;
+  }
+
   STsdbQueryHandle *pQueryHandle = (STsdbQueryHandle*) tsdbQueryTables(tsdb, pCond, groupList, qinfo);
+
+  assert(pCond->order == TSDB_ORDER_ASC && pCond->twindow.skey <= pCond->twindow.ekey);
   return pQueryHandle;
 }
 
@@ -1981,8 +1988,9 @@ bool tsdbNextDataBlock(TsdbQueryHandleT* pHandle) {
 STimeWindow changeTableGroupByLastrow(STableGroupInfo *groupList) {
   STimeWindow window = {INT64_MAX, INT64_MIN};
 
+  int32_t totalNumOfTable = 0;
+
   // NOTE: starts from the buffer in case of descending timestamp order check data blocks
-  // todo consider the query time window, current last_row does not apply the query time window
   size_t numOfGroups = taosArrayGetSize(groupList->pGroupList);
   for(int32_t j = 0; j < numOfGroups; ++j) {
     SArray* pGroup = taosArrayGetP(groupList->pGroupList, j);
@@ -1993,8 +2001,9 @@ STimeWindow changeTableGroupByLastrow(STableGroupInfo *groupList) {
     size_t numOfTables = taosArrayGetSize(pGroup);
     for(int32_t i = 0; i < numOfTables; ++i) {
       STableKeyInfo* pKeyInfo = (STableKeyInfo*) taosArrayGet(pGroup, i);
-      TSKEY lastKey = ((STable*)(pKeyInfo->pTable))->lastKey;
 
+      // if the lastKey equals to INT64_MIN, there is no data in this table
+      TSKEY lastKey = ((STable*)(pKeyInfo->pTable))->lastKey;
       if (key < lastKey) {
         key = lastKey;
 
@@ -2012,13 +2021,23 @@ STimeWindow changeTableGroupByLastrow(STableGroupInfo *groupList) {
       }
     }
 
+    // clear current group
+    taosArrayClear(pGroup);
+
     // more than one table in each group, only one table left for each group
-    if (numOfTables > 1) {
-      taosArrayClear(pGroup);
+    if (keyInfo.pTable != NULL) {
+      totalNumOfTable++;
       taosArrayPush(pGroup, &keyInfo);
     }
   }
 
+  // window does not being updated, so set the original
+  if (window.skey == INT64_MAX && window.ekey == INT64_MIN) {
+    window = TSWINDOW_INITIALIZER;
+    assert(totalNumOfTable == 0);
+  }
+
+  groupList->numOfTables = totalNumOfTable;
   return window;
 }
 

tests/script/general/parser/lastrow_query.sim

@@ -153,4 +153,22 @@ if $rows != 46 then
   return -1
 endi
 
+print ========>td-1317, empty table last_row query crashed
+sql create table m1(ts timestamp, k int) tags (a int);
+sql create table t1 using m1 tags(1);
+sql create table t2 using m1 tags(2);
 
+sql select last_row(*) from t1
+if $rows != 0 then
+  return -1
+endi
+
+sql select last_row(*) from m1
+if $rows != 0 then
+  return -1
+endi
+
+sql select last_row(*) from m1 where tbname in ('t1')
+if $rows != 0 then
+  return -1
+endi

tests/script/general/parser/timestamp.sim

@@ -20,7 +20,7 @@ $db = $dbPrefix . $i
 $stb = $stbPrefix . $i
 
 sql drop database if exists $db
-sql create database $db maxrows 200 cache 1024 tblocks 200 maxTables 4
+sql create database $db maxrows 200 maxTables 4
 print ====== create tables
 sql use $db
 sql create table $stb (ts timestamp, c1 timestamp, c2 int) tags(t1 binary(20))

tests/script/general/parser/timestamp_query.sim

@@ -22,12 +22,29 @@ $tsu = $tsu - $delta
 $tsu = $tsu + $ts0
 
 ##### select from supertable
-
 $tb = $tbPrefix . 0
-sql select first(c1), last(c1) from $tb where ts >= $ts0 and ts < $tsu interval(5m) fill(value, -1)
+sql select first(c1), last(c1), (1537325400 - 1537146000)/(5*60) v from $tb where ts >= $ts0 and ts < $tsu interval(5m) fill(value, -1)
 $res = $rowNum * 2
-$res = $res - 1
-if $rows != $res then
+$n = $res - 2
+print ============>$n
+if $rows != $n then
+  print expect $n, actual $rows
   return -1
 endi
 
+if $data03 != 598.000000000 then
+  print expect 598.000000000, actual $data03
+  return -1
+endi
+
+
+if $data13 != 598.000000000 then
+  print expect 598.000000000, actual $data03
+  return -1
+endi
+
+sql select first(c1), last(c1), (1537325400 - 1537146000)/(5*60) v from $tb where ts >= $ts0 and ts < $tsu interval(5m) fill(value, NULL)
+if $data13 != 598.000000000 then
+  print expect 598.000000000, actual $data03
+  return -1
+endi
\ No newline at end of file

tests/script/general/parser/topbot.sim

@@ -137,4 +137,23 @@ if $rows != 3 then
  return -1
 endi
 
+print =========>td-1308
+sql create database db;
+sql use db;
+
+sql create table stb (ts timestamp, c1 int, c2 binary(10)) tags(t1 binary(10));
+sql create table tb1 using stb tags('a1');
+
+sql insert into tb1 values('2020-09-03 15:30:48.812', 0, 'tb1');
+sql select count(*) from stb where ts > '2020-09-03 15:30:44' interval(4s);
+if $rows != 1 then
+  return -1
+endi
+
+sql create table tb4 using stb tags('a4');
+sql select count(*) from stb where ts > '2020-09-03 15:30:44' interval(4s);
+if $rows != 1 then
+  return -1
+endi
+
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file