Merge branch '3.0' of https://github.com/taosdata/TDengine into feature/vnode_refact1

include/util/taoserror.h

@@ -621,6 +621,14 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_PAR_INVALID_TOPIC_QUERY       TAOS_DEF_ERROR_CODE(0, 0x2639)
 #define TSDB_CODE_PAR_INVALID_DROP_STABLE       TAOS_DEF_ERROR_CODE(0, 0x263A)
 #define TSDB_CODE_PAR_INVALID_FILL_TIME_RANGE   TAOS_DEF_ERROR_CODE(0, 0x263B)
+#define TSDB_CODE_PAR_DUPLICATED_COLUMN         TAOS_DEF_ERROR_CODE(0, 0x263C)
+#define TSDB_CODE_PAR_INVALID_TAGS_LENGTH       TAOS_DEF_ERROR_CODE(0, 0x263D)
+#define TSDB_CODE_PAR_INVALID_ROW_LENGTH        TAOS_DEF_ERROR_CODE(0, 0x263E)
+#define TSDB_CODE_PAR_INVALID_COLUMNS_NUM       TAOS_DEF_ERROR_CODE(0, 0x263F)
+#define TSDB_CODE_PAR_TOO_MANY_COLUMNS          TAOS_DEF_ERROR_CODE(0, 0x2640)
+#define TSDB_CODE_PAR_INVALID_FIRST_COLUMN      TAOS_DEF_ERROR_CODE(0, 0x2641)
+#define TSDB_CODE_PAR_INVALID_VAR_COLUMN_LEN    TAOS_DEF_ERROR_CODE(0, 0x2642)
+#define TSDB_CODE_PAR_INVALID_TAGS_NUM          TAOS_DEF_ERROR_CODE(0, 0x2643)
 
 //planner
 #define TSDB_CODE_PLAN_INTERNAL_ERROR           TAOS_DEF_ERROR_CODE(0, 0x2700)

source/libs/parser/src/parTranslater.c

@@ -2174,17 +2174,6 @@ static int32_t checkTableSmaOption(STranslateContext* pCxt, SCreateTableStmt* pS
   return TSDB_CODE_SUCCESS;
 }
 
-static int32_t checkTableTags(STranslateContext* pCxt, SCreateTableStmt* pStmt) {
-  SNode* pNode;
-  FOREACH(pNode, pStmt->pTags) {
-    SColumnDefNode* pCol = (SColumnDefNode*)pNode;
-    if (pCol->dataType.type == TSDB_DATA_TYPE_JSON && LIST_LENGTH(pStmt->pTags) > 1) {
-      return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_ONLY_ONE_JSON_TAG);
-    }
-  }
-  return TSDB_CODE_SUCCESS;
-}
-
 static int32_t checkTableRollupOption(STranslateContext* pCxt, SNodeList* pFuncs) {
   if (NULL == pFuncs) {
     return TSDB_CODE_SUCCESS;
@@ -2196,6 +2185,113 @@ static int32_t checkTableRollupOption(STranslateContext* pCxt, SNodeList* pFuncs
   return TSDB_CODE_SUCCESS;
 }
 
+static int32_t checkTableTagsSchema(STranslateContext* pCxt, SHashObj* pHash, SNodeList* pTags) {
+  int32_t ntags = LIST_LENGTH(pTags);
+  if (0 == ntags) {
+    return TSDB_CODE_SUCCESS;
+  } else if (ntags > TSDB_MAX_TAGS) {
+    return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_TAGS_NUM);
+  }
+
+  int32_t code = TSDB_CODE_SUCCESS;
+  int32_t tagsSize = 0;
+  SNode*  pNode = NULL;
+  FOREACH(pNode, pTags) {
+    SColumnDefNode* pTag = (SColumnDefNode*)pNode;
+    int32_t         len = strlen(pTag->colName);
+    if (NULL != taosHashGet(pHash, pTag->colName, len)) {
+      code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_DUPLICATED_COLUMN);
+    }
+    if (TSDB_CODE_SUCCESS == code && pTag->dataType.type == TSDB_DATA_TYPE_JSON && ntags > 1) {
+      code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_ONLY_ONE_JSON_TAG);
+    }
+    if (TSDB_CODE_SUCCESS == code) {
+      if ((TSDB_DATA_TYPE_VARCHAR == pTag->dataType.type && pTag->dataType.bytes > TSDB_MAX_BINARY_LEN) ||
+          (TSDB_DATA_TYPE_NCHAR == pTag->dataType.type && pTag->dataType.bytes > TSDB_MAX_NCHAR_LEN)) {
+        code = code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_VAR_COLUMN_LEN);
+      }
+    }
+    if (TSDB_CODE_SUCCESS == code) {
+      code = taosHashPut(pHash, pTag->colName, len, &pTag, POINTER_BYTES);
+    }
+    if (TSDB_CODE_SUCCESS == code) {
+      tagsSize += pTag->dataType.bytes;
+    } else {
+      break;
+    }
+  }
+
+  if (TSDB_CODE_SUCCESS == code && tagsSize > TSDB_MAX_TAGS_LEN) {
+    code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_TAGS_LENGTH, TSDB_MAX_TAGS_LEN);
+  }
+
+  return code;
+}
+
+static int32_t checkTableColsSchema(STranslateContext* pCxt, SHashObj* pHash, SNodeList* pCols) {
+  int32_t ncols = LIST_LENGTH(pCols);
+  if (ncols < TSDB_MIN_COLUMNS) {
+    return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_COLUMNS_NUM);
+  } else if (ncols > TSDB_MAX_COLUMNS) {
+    return generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_TOO_MANY_COLUMNS);
+  }
+
+  int32_t code = TSDB_CODE_SUCCESS;
+
+  bool    first = true;
+  int32_t rowSize = 0;
+  SNode*  pNode = NULL;
+  FOREACH(pNode, pCols) {
+    SColumnDefNode* pCol = (SColumnDefNode*)pNode;
+    if (first) {
+      first = false;
+      if (TSDB_DATA_TYPE_TIMESTAMP != pCol->dataType.type) {
+        code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_FIRST_COLUMN);
+      }
+    }
+    int32_t len = strlen(pCol->colName);
+    if (TSDB_CODE_SUCCESS == code && NULL != taosHashGet(pHash, pCol->colName, len)) {
+      code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_DUPLICATED_COLUMN);
+    }
+    if (TSDB_CODE_SUCCESS == code) {
+      if ((TSDB_DATA_TYPE_VARCHAR == pCol->dataType.type && pCol->dataType.bytes > TSDB_MAX_BINARY_LEN) ||
+          (TSDB_DATA_TYPE_NCHAR == pCol->dataType.type && pCol->dataType.bytes > TSDB_MAX_NCHAR_LEN)) {
+        code = code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_VAR_COLUMN_LEN);
+      }
+    }
+    if (TSDB_CODE_SUCCESS == code) {
+      code = taosHashPut(pHash, pCol->colName, len, &pCol, POINTER_BYTES);
+    }
+    if (TSDB_CODE_SUCCESS == code) {
+      rowSize += pCol->dataType.bytes;
+    } else {
+      break;
+    }
+  }
+
+  if (TSDB_CODE_SUCCESS == code && rowSize > TSDB_MAX_BYTES_PER_ROW) {
+    code = generateSyntaxErrMsg(&pCxt->msgBuf, TSDB_CODE_PAR_INVALID_ROW_LENGTH, TSDB_MAX_BYTES_PER_ROW);
+  }
+
+  return code;
+}
+
+static int32_t checkTableSchema(STranslateContext* pCxt, SCreateTableStmt* pStmt) {
+  SHashObj* pHash = taosHashInit(LIST_LENGTH(pStmt->pTags) + LIST_LENGTH(pStmt->pCols),
+                                 taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
+  if (NULL == pHash) {
+    return TSDB_CODE_OUT_OF_MEMORY;
+  }
+
+  int32_t code = checkTableTagsSchema(pCxt, pHash, pStmt->pTags);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = checkTableColsSchema(pCxt, pHash, pStmt->pCols);
+  }
+
+  taosHashCleanup(pHash);
+  return code;
+}
+
 static int32_t checkCreateTable(STranslateContext* pCxt, SCreateTableStmt* pStmt) {
   int32_t code = checkRangeOption(pCxt, "delay", pStmt->pOptions->delay, TSDB_MIN_ROLLUP_DELAY, TSDB_MAX_ROLLUP_DELAY);
   if (TSDB_CODE_SUCCESS == code) {
@@ -2211,7 +2307,7 @@ static int32_t checkCreateTable(STranslateContext* pCxt, SCreateTableStmt* pStmt
     code = checkTableSmaOption(pCxt, pStmt);
   }
   if (TSDB_CODE_SUCCESS == code) {
-    code = checkTableTags(pCxt, pStmt);
+    code = checkTableSchema(pCxt, pStmt);
   }
   return code;
 }
@@ -3838,6 +3934,10 @@ static int32_t buildDropTableVgroupHashmap(STranslateContext* pCxt, SDropTableCl
     goto over;
   }
 
+  if (TSDB_CODE_PAR_TABLE_NOT_EXIST == code && pClause->ignoreNotExists) {
+    code = TSDB_CODE_SUCCESS;
+  }
+
   *pIsSuperTable = false;
 
   SVgroupInfo info = {0};

source/libs/parser/src/parUtil.c

@@ -129,7 +129,23 @@ static char* getSyntaxErrFormat(int32_t errCode) {
     case TSDB_CODE_PAR_INVALID_DROP_STABLE:
       return "Cannot drop super table in batch";
     case TSDB_CODE_PAR_INVALID_FILL_TIME_RANGE:
-      return "start(end) time of query range required or time range too large";
+      return "Start(end) time of query range required or time range too large";
+    case TSDB_CODE_PAR_DUPLICATED_COLUMN:
+      return "Duplicated column names";
+    case TSDB_CODE_PAR_INVALID_TAGS_LENGTH:
+      return "Tags length exceeds max length %d";
+    case TSDB_CODE_PAR_INVALID_ROW_LENGTH:
+      return "Row length exceeds max length %d";
+    case TSDB_CODE_PAR_INVALID_COLUMNS_NUM:
+      return "Illegal number of columns";
+    case TSDB_CODE_PAR_TOO_MANY_COLUMNS:
+      return "Too many columns";
+    case TSDB_CODE_PAR_INVALID_FIRST_COLUMN:
+      return "First column must be timestamp";
+    case TSDB_CODE_PAR_INVALID_VAR_COLUMN_LEN:
+      return "Invalid binary/nchar column length";
+    case TSDB_CODE_PAR_INVALID_TAGS_NUM:
+      return "Invalid number of tag columns";
     case TSDB_CODE_OUT_OF_MEMORY:
       return "Out of memory";
     default:

source/libs/planner/src/planLogicCreater.c

@@ -277,6 +277,11 @@ static int32_t createScanLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSelect
     code = nodesCollectFuncs(pSelect, SQL_CLAUSE_FROM, fmIsScanPseudoColumnFunc, &pScan->pScanPseudoCols);
   }
 
+  // rewrite the expression in subsequent clauses
+  if (TSDB_CODE_SUCCESS == code) {
+    code = rewriteExprForSelect(pScan->pScanPseudoCols, pSelect, SQL_CLAUSE_FROM);
+  }
+
   pScan->scanType = getScanType(pCxt, pScan->pScanPseudoCols, pScan->pScanCols, pScan->pMeta);
 
   if (TSDB_CODE_SUCCESS == code) {

source/libs/planner/src/planOptimizer.c

@@ -123,14 +123,40 @@ static SNodeList* osdGetAllFuncs(SLogicNode* pNode) {
   return NULL;
 }
 
+static bool needOptimizeDataRequire(const SFunctionNode* pFunc) {
+  if (!fmIsSpecialDataRequiredFunc(pFunc->funcId)) {
+    return false;
+  }
+  SNode* pPara = NULL;
+  FOREACH(pPara, pFunc->pParameterList) {
+    if (QUERY_NODE_COLUMN != nodeType(pPara) && QUERY_NODE_VALUE != nodeType(pPara)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+static bool needOptimizeDynamicScan(const SFunctionNode* pFunc) {
+  if (!fmIsDynamicScanOptimizedFunc(pFunc->funcId)) {
+    return false;
+  }
+  SNode* pPara = NULL;
+  FOREACH(pPara, pFunc->pParameterList) {
+    if (QUERY_NODE_COLUMN != nodeType(pPara) && QUERY_NODE_VALUE != nodeType(pPara)) {
+      return false;
+    }
+  }
+  return true;
+}
+
 static int32_t osdGetRelatedFuncs(SScanLogicNode* pScan, SNodeList** pSdrFuncs, SNodeList** pDsoFuncs) {
   SNodeList* pAllFuncs = osdGetAllFuncs(pScan->node.pParent);
   SNode*     pFunc = NULL;
   FOREACH(pFunc, pAllFuncs) {
     int32_t code = TSDB_CODE_SUCCESS;
-    if (fmIsSpecialDataRequiredFunc(((SFunctionNode*)pFunc)->funcId)) {
+    if (needOptimizeDataRequire((SFunctionNode*)pFunc)) {
       code = nodesListMakeStrictAppend(pSdrFuncs, nodesCloneNode(pFunc));
-    } else if (fmIsDynamicScanOptimizedFunc(((SFunctionNode*)pFunc)->funcId)) {
+    } else if (needOptimizeDynamicScan((SFunctionNode*)pFunc)) {
       code = nodesListMakeStrictAppend(pDsoFuncs, nodesCloneNode(pFunc));
     }
     if (TSDB_CODE_SUCCESS != code) {
@@ -541,9 +567,14 @@ static bool cpdIsPrimaryKeyEqualCond(SJoinLogicNode* pJoin, SNode* pCond) {
   if (QUERY_NODE_OPERATOR != nodeType(pCond)) {
     return false;
   }
-  SNodeList*     pLeftCols = ((SLogicNode*)nodesListGetNode(pJoin->node.pChildren, 0))->pTargets;
-  SNodeList*     pRightCols = ((SLogicNode*)nodesListGetNode(pJoin->node.pChildren, 1))->pTargets;
+
   SOperatorNode* pOper = (SOperatorNode*)pJoin->pOnConditions;
+  if (OP_TYPE_EQUAL != pOper->opType) {
+    return false;
+  }
+
+  SNodeList* pLeftCols = ((SLogicNode*)nodesListGetNode(pJoin->node.pChildren, 0))->pTargets;
+  SNodeList* pRightCols = ((SLogicNode*)nodesListGetNode(pJoin->node.pChildren, 1))->pTargets;
   if (cpdIsPrimaryKey(pOper->pLeft, pLeftCols)) {
     return cpdIsPrimaryKey(pOper->pRight, pRightCols);
   } else if (cpdIsPrimaryKey(pOper->pLeft, pRightCols)) {

source/libs/planner/test/planOptimizeTest.cpp

@@ -20,11 +20,21 @@ using namespace std;
 
 class PlanOptimizeTest : public PlannerTestBase {};
 
+TEST_F(PlanOptimizeTest, optimizeScanData) {
+  useDb("root", "test");
+
+  run("SELECT COUNT(*) FROM t1");
+
+  run("SELECT COUNT(c1) FROM t1");
+
+  run("SELECT COUNT(CAST(c1 AS BIGINT)) FROM t1");
+}
+
 TEST_F(PlanOptimizeTest, orderByPrimaryKey) {
   useDb("root", "test");
 
-  run("select * from t1 order by ts");
-  run("select * from t1 order by ts desc");
-  run("select c1 from t1 order by ts");
-  run("select c1 from t1 order by ts desc");
+  run("SELECT * FROM t1 ORDER BY ts");
+  run("SELECT * FROM t1 ORDER BY ts DESC");
+  run("SELECT c1 FROM t1 ORDER BY ts");
+  run("SELECT c1 FROM t1 ORDER BY ts DESC");
 }

source/libs/scheduler/src/scheduler.c

@@ -22,7 +22,7 @@
 #include "trpc.h"
 
 SSchedulerMgmt schMgmt = {
-  .jobRef = -1,
+    .jobRef = -1,
 };
 
 FORCE_INLINE SSchJob *schAcquireJob(int64_t refId) { return (SSchJob *)taosAcquireRef(schMgmt.jobRef, refId); }
@@ -72,7 +72,7 @@ int32_t schInitTask(SSchJob *pJob, SSchTask *pTask, SSubplan *pPlan, SSchLevel *
 int32_t schInitJob(SSchJob **pSchJob, SQueryPlan *pDag, void *transport, SArray *pNodeList, const char *sql,
                    int64_t startTs, bool syncSchedule) {
   int32_t  code = 0;
-  int64_t refId = -1;
+  int64_t  refId = -1;
   SSchJob *pJob = taosMemoryCalloc(1, sizeof(SSchJob));
   if (NULL == pJob) {
     qError("QID:%" PRIx64 " calloc %d failed", pDag->queryId, (int32_t)sizeof(SSchJob));
@@ -124,7 +124,7 @@ int32_t schInitJob(SSchJob **pSchJob, SQueryPlan *pDag, void *transport, SArray
   }
 
   atomic_add_fetch_32(&schMgmt.jobNum, 1);
-  
+
   if (NULL == schAcquireJob(refId)) {
     SCH_JOB_ELOG("schAcquireJob job failed, refId:%" PRIx64, refId);
     SCH_ERR_JRET(TSDB_CODE_SCH_STATUS_ERROR);
@@ -1085,19 +1085,22 @@ int32_t schHandleResponseMsg(SSchJob *pJob, SSchTask *pTask, int32_t msgType, ch
     case TDMT_VND_CREATE_TABLE_RSP: {
       SVCreateTbBatchRsp batchRsp = {0};
       if (msg) {
-        SCH_ERR_JRET(tDeserializeSVCreateTbBatchRsp(msg, msgSize, &batchRsp));
-        if (batchRsp.pArray) {
-          int32_t num = taosArrayGetSize(batchRsp.pArray);
-          for (int32_t i = 0; i < num; ++i) {
-            SVCreateTbRsp *rsp = taosArrayGet(batchRsp.pArray, i);
+        SCoder coder = {0};
+        tCoderInit(&coder, TD_LITTLE_ENDIAN, msg, msgSize, TD_DECODER);
+        code = tDecodeSVCreateTbBatchRsp(&coder, &batchRsp);
+        if (TSDB_CODE_SUCCESS == code && batchRsp.nRsps > 0) {
+          for (int32_t i = 0; i < batchRsp.nRsps; ++i) {
+            SVCreateTbRsp *rsp = batchRsp.pRsps + i;
             if (NEED_CLIENT_HANDLE_ERROR(rsp->code)) {
-              taosArrayDestroy(batchRsp.pArray);
+              tCoderClear(&coder);
               SCH_ERR_JRET(rsp->code);
+            } else if (TSDB_CODE_SUCCESS != rsp->code) {
+              code = rsp->code;
             }
           }
-
-          taosArrayDestroy(batchRsp.pArray);
         }
+        tCoderClear(&coder);
+        SCH_ERR_JRET(code);
       }
 
       SCH_ERR_JRET(rspCode);
@@ -1110,13 +1113,14 @@ int32_t schHandleResponseMsg(SSchJob *pJob, SSchTask *pTask, int32_t msgType, ch
         SCoder coder = {0};
         tCoderInit(&coder, TD_LITTLE_ENDIAN, msg, msgSize, TD_DECODER);
         code = tDecodeSVDropTbBatchRsp(&coder, &batchRsp);
-        if (TSDB_CODE_SUCCESS == code && batchRsp.pArray) {
-          int32_t num = taosArrayGetSize(batchRsp.pArray);
-          for (int32_t i = 0; i < num; ++i) {
-            SVDropTbRsp *rsp = taosArrayGet(batchRsp.pArray, i);
+        if (TSDB_CODE_SUCCESS == code && batchRsp.nRsps > 0) {
+          for (int32_t i = 0; i < batchRsp.nRsps; ++i) {
+            SVDropTbRsp *rsp = batchRsp.pRsps + i;
             if (NEED_CLIENT_HANDLE_ERROR(rsp->code)) {
               tCoderClear(&coder);
               SCH_ERR_JRET(rsp->code);
+            } else if (TSDB_CODE_SUCCESS != rsp->code) {
+              code = rsp->code;
             }
           }
         }
@@ -2282,10 +2286,10 @@ int32_t schCancelJob(SSchJob *pJob) {
 }
 
 void schCloseJobRef(void) {
-  if (!atomic_load_8((int8_t*)&schMgmt.exit)) {
+  if (!atomic_load_8((int8_t *)&schMgmt.exit)) {
     return;
   }
-  
+
   SCH_LOCK(SCH_WRITE, &schMgmt.lock);
   if (atomic_load_32(&schMgmt.jobNum) <= 0 && schMgmt.jobRef >= 0) {
     taosCloseRef(schMgmt.jobRef);
@@ -2791,8 +2795,8 @@ void schedulerFreeTaskList(SArray *taskList) {
 }
 
 void schedulerDestroy(void) {
-  atomic_store_8((int8_t*)&schMgmt.exit, 1);
-  
+  atomic_store_8((int8_t *)&schMgmt.exit, 1);
+
   if (schMgmt.jobRef >= 0) {
     SSchJob *pJob = taosIterateRef(schMgmt.jobRef, 0);
     int64_t  refId = 0;

source/util/src/terror.c

@@ -443,6 +443,9 @@ TAOS_DEFINE_ERROR(TSDB_CODE_SCH_STATUS_ERROR,             "scheduler status erro
 TAOS_DEFINE_ERROR(TSDB_CODE_SCH_INTERNAL_ERROR,           "scheduler internal error")
 TAOS_DEFINE_ERROR(TSDB_CODE_QW_MSG_ERROR,                 "Invalid msg order")
 
+// parser
+TAOS_DEFINE_ERROR(TSDB_CODE_PAR_TABLE_NOT_EXIST,          "Table does not exist")
+
 //planner
 TAOS_DEFINE_ERROR(TSDB_CODE_PLAN_INTERNAL_ERROR,          "planner internal error")
 

tests/script/tsim/query/explain.sim

@@ -25,15 +25,15 @@ sql insert into tb3 values (now, 3, "Hash  (cost=229.20..229.20 rows=101 width=2
 sql create table tb4 using st1 tags(4);
 sql insert into tb4 values (now, 4, "Bitmap Heap Scan on tenk1 t1  (cost=5.07..229.20 rows=101 width=244) (actual time=0.080..0.526 rows=100 loops=1)");
 
-sql create table tb1 using st2 tags(1);
-sql insert into tb1 values (now, 1, "Hash Join  (cost=230.47..713.98 rows=101 width=488) (actual time=0.711..7.427 rows=100 loops=1)");
+#sql create table tb1 using st2 tags(1);
+#sql insert into tb1 values (now, 1, "Hash Join  (cost=230.47..713.98 rows=101 width=488) (actual time=0.711..7.427 rows=100 loops=1)");
 
-sql create table tb2 using st2 tags(2);
-sql insert into tb2 values (now, 2, "Seq Scan on tenk2 t2  (cost=0.00..445.00 rows=10000 width=244) (actual time=0.007..2.583 rows=10000 loops=1)");
-sql create table tb3 using st2 tags(3);
-sql insert into tb3 values (now, 3, "Hash  (cost=229.20..229.20 rows=101 width=244) (actual time=0.659..0.659 rows=100 loops=1)");
-sql create table tb4 using st2 tags(4);
-sql insert into tb4 values (now, 4, "Bitmap Heap Scan on tenk1 t1  (cost=5.07..229.20 rows=101 width=244) (actual time=0.080..0.526 rows=100 loops=1)");
+#sql create table tb2 using st2 tags(2);
+#sql insert into tb2 values (now, 2, "Seq Scan on tenk2 t2  (cost=0.00..445.00 rows=10000 width=244) (actual time=0.007..2.583 rows=10000 loops=1)");
+#sql create table tb3 using st2 tags(3);
+#sql insert into tb3 values (now, 3, "Hash  (cost=229.20..229.20 rows=101 width=244) (actual time=0.659..0.659 rows=100 loops=1)");
+#sql create table tb4 using st2 tags(4);
+#sql insert into tb4 values (now, 4, "Bitmap Heap Scan on tenk1 t1  (cost=5.07..229.20 rows=101 width=244) (actual time=0.080..0.526 rows=100 loops=1)");
 
 
 print ======== step2 

tests/script/tsim/query/session.sim

@@ -65,6 +65,15 @@ sql INSERT INTO dev_002 VALUES('2020-05-13 10:00:00.031', 5)
 sql INSERT INTO dev_002 VALUES('2020-05-13 10:00:00.036', 6)
 sql INSERT INTO dev_002 VALUES('2020-05-13 10:00:00.51', 7)
 
+# vnode does not return the precision of the table
+print ====> create database d1 precision 'us' 
+sql create database d1 precision 'us'
+sql use d1
+sql create table dev_001 (ts timestamp ,i timestamp ,j int)
+sql insert into dev_001 values(1623046993681000,now,1)(1623046993681001,now+1s,2)(1623046993681002,now+2s,3)(1623046993681004,now+5s,4)
+sql create table secondts(ts timestamp,t2 timestamp,i int)
+sql insert into secondts values(1623046993681000,now,1)(1623046993681001,now+1s,2)(1623046993681002,now+2s,3)(1623046993681004,now+5s,4)
+
 $loop_test = 0  
 loop_test_pos:
 
@@ -288,15 +297,6 @@ sql_error sql select count(*) from dev_001 session(ts,0s)
 sql_error select count(*) from dev_001 session(i,1y)
 sql_error select count(*) from dev_001 session(ts,1d) where ts <'2020-05-20 0:0:0'
 
-# vnode does not return the precision of the table
-print ====> create database d1 precision 'us' 
-sql create database d1 precision 'us'
-sql use d1
-sql create table dev_001 (ts timestamp ,i timestamp ,j int)
-sql insert into dev_001 values(1623046993681000,now,1)(1623046993681001,now+1s,2)(1623046993681002,now+2s,3)(1623046993681004,now+5s,4)
-sql create table secondts(ts timestamp,t2 timestamp,i int)
-sql insert into secondts values(1623046993681000,now,1)(1623046993681001,now+1s,2)(1623046993681002,now+2s,3)(1623046993681004,now+5s,4)
-
 #print ====> select count(*) from dev_001 session(ts,1u)
 #sql select _wstartts, count(*) from dev_001 session(ts,1u)
 #print rows: $rows

tests/script/tsim/table/basic1.sim

@@ -91,9 +91,9 @@ print =============== create normal table
 sql create database ndb
 sql use ndb
 sql create table nt0 (ts timestamp, i int)
-sql create table if not exists nt0 (ts timestamp, i int)
+# sql create table if not exists nt0 (ts timestamp, i int)
 sql create table nt1 (ts timestamp, i int)
-sql create table if not exists nt1 (ts timestamp, i int)
+# sql create table if not exists nt1 (ts timestamp, i int)
 sql create table if not exists nt3 (ts timestamp, i int)
 
 sql show tables