Merge remote-tracking branch 'origin/develop' into szhou/feature/td-11218

src/client/inc/tscUtil.h

@@ -29,6 +29,14 @@ extern "C" {
 #include "tsched.h"
 #include "tsclient.h"
 
+#define LABEL_SQL   "sql:"
+#define LABEL_TO    " to:"
+#define LABEL_SPLIT " split:"
+
+#define LABEL_SQL_LEN   (sizeof(LABEL_SQL) - 1)
+#define LABEL_TO_LEN    (sizeof(LABEL_TO) - 1)
+#define LABEL_SPLIT_LEN (sizeof(LABEL_SPLIT) - 1)
+
 #define UTIL_TABLE_IS_SUPER_TABLE(metaInfo) \
   (((metaInfo)->pTableMeta != NULL) && ((metaInfo)->pTableMeta->tableType == TSDB_SUPER_TABLE))
 

src/client/inc/tsclient.h

@@ -405,6 +405,10 @@ typedef struct SSqlStream {
   int16_t  precision;
   int64_t  num;  // number of computing count
 
+  int32_t dstCols;  // dstTable has number of columns 
+  char*   to;
+  char*   split;
+
   /*
    * keep the number of current result in computing,
    * the value will be set to 0 before set timer for next computing
@@ -484,6 +488,8 @@ TAOS *taos_connect_a(char *ip, char *user, char *pass, char *db, uint16_t port,
                      void *param, TAOS **taos);
 TAOS_RES* taos_query_h(TAOS* taos, const char *sqlstr, int64_t* res);
 TAOS_RES * taos_query_ra(TAOS *taos, const char *sqlstr, __async_cb_func_t fp, void *param);
+// get taos connection unused session number
+int32_t taos_unused_session(TAOS* taos);
 
 void waitForQueryRsp(void *param, TAOS_RES *tres, int code);
 

src/client/src/taos.def

@@ -53,3 +53,4 @@ taos_is_null
 taos_insert_lines
 taos_schemaless_insert
 taos_result_block
+taos_print_row_ex
\ No newline at end of file

src/client/src/tscSQLParser.c

@@ -1443,6 +1443,7 @@ int32_t tscSetTableFullName(SName* pName, SStrToken* pTableName, SSqlObj* pSql,
   const char* msg3 = "no acctId";
   const char* msg4 = "db name too long";
   const char* msg5 = "table name too long";
+  const char* msg6 = "table name empty";
 
   SSqlCmd* pCmd = &pSql->cmd;
   int32_t  code = TSDB_CODE_SUCCESS;
@@ -1494,6 +1495,8 @@ int32_t tscSetTableFullName(SName* pName, SStrToken* pTableName, SSqlObj* pSql,
 
     if (pTableName->n >= TSDB_TABLE_NAME_LEN) {
       return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
+    } else if(pTableName->n == 0) {
+      return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg6);
     }
 
     char name[TSDB_TABLE_FNAME_LEN] = {0};
@@ -9081,6 +9084,18 @@ int32_t doCheckForStream(SSqlObj* pSql, SSqlInfo* pInfo) {
   if (tscValidateName(pName, true, &dbIncluded1) != TSDB_CODE_SUCCESS) {
     return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
   }
+  
+  // check to valid and create to name
+  if(pInfo->pCreateTableInfo->to.n > 0) {
+    bool dbInclude = false;
+    if (tscValidateName(&pInfo->pCreateTableInfo->to, false, &dbInclude) != TSDB_CODE_SUCCESS) {
+      return invalidOperationMsg(tscGetErrorMsgPayload(pCmd), msg1);
+    }
+    int32_t code = tscSetTableFullName(&pInfo->pCreateTableInfo->toSName, &pInfo->pCreateTableInfo->to, pSql, dbInclude);
+    if(code != TSDB_CODE_SUCCESS) {
+      return code;
+    }
+  }
 
   SRelationInfo* pFromInfo = pInfo->pCreateTableInfo->pSelect->from;
   if (pFromInfo == NULL || taosArrayGetSize(pFromInfo->list) == 0) {

src/client/src/tscServer.c

@@ -1546,11 +1546,49 @@ int tscEstimateCreateTableMsgLength(SSqlObj *pSql, SSqlInfo *pInfo) {
 
   if (pCreateTableInfo->pSelect != NULL) {
     size += (pCreateTableInfo->pSelect->sqlstr.n + 1);
+    // add size = create super table with same columns and 1 tags
+    if(pCreateTableInfo->to.n > 0) {
+      size += sizeof(SCreateTableMsg);
+      size += sizeof(SSchema) * (pCmd->numOfCols + 1);
+      size += pCreateTableInfo->to.n + 4;  // to:
+      if(pCreateTableInfo->split.n > 0)
+        size += pCreateTableInfo->split.n + 7; // split:
+    }    
   }
 
   return size + TSDB_EXTRA_PAYLOAD_SIZE;
 }
 
+char* fillCreateSTableMsg(SCreateTableMsg* pCreateMsg, SCreateTableSql* pTableSql, SSqlCmd* pCmd, SSqlInfo *pInfo) {
+  // SET
+  SSchema*    pSchema    = (SSchema *)pCreateMsg->schema;
+  SQueryInfo* pQueryInfo = tscGetQueryInfo(pCmd);
+  pCreateMsg->igExists   = 0;
+  pCreateMsg->sqlLen     = 0;
+
+  // FullName like acctID.dbName.tableName
+  tNameExtractFullName(&pInfo->pCreateTableInfo->toSName, pCreateMsg->tableName);
+
+  // copy columns
+  pCreateMsg->numOfColumns = htons(pCmd->numOfCols);
+  for (int i = 0; i < pCmd->numOfCols; ++i) {
+    TAOS_FIELD *pField = tscFieldInfoGetField(&pQueryInfo->fieldsInfo, i);
+    pSchema->type = pField->type;
+    strcpy(pSchema->name, pField->name);
+    pSchema->bytes = htons(pField->bytes);
+
+    pSchema++;
+  }
+  // append one tag
+  pCreateMsg->numOfTags  = htons(1); // only one tag immutable
+  pSchema->type          = TSDB_DATA_TYPE_INT;
+  pSchema->bytes         = htons(INT_BYTES);
+  strcpy(pSchema->name, "tag1");
+  pSchema ++;
+
+  return (char *)pSchema;
+}
+
 int tscBuildCreateTableMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   int      msgLen = 0;
   int      size = 0;
@@ -1608,39 +1646,71 @@ int tscBuildCreateTableMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
       pCreate->len = htonl(len);
     }
   } else {  // create (super) table
+    // FIRST MSG
+    SCreateTableMsg* pCreate = pCreateMsg;
     pCreateTableMsg->numOfTables = htonl(1); // only one table will be created
-
-    int32_t code = tNameExtractFullName(&pTableMetaInfo->name, pCreateMsg->tableName);
+    int32_t code = tNameExtractFullName(&pTableMetaInfo->name, pCreate->tableName);
+    bool to = pInfo->pCreateTableInfo->to.n > 0;
     assert(code == 0);
 
     SCreateTableSql *pCreateTable = pInfo->pCreateTableInfo;
 
-    pCreateMsg->igExists = pCreateTable->existCheck ? 1 : 0;
-    pCreateMsg->numOfColumns = htons(pCmd->numOfCols);
-    pCreateMsg->numOfTags = htons(pCmd->count);
-
-    pCreateMsg->sqlLen = 0;
-    pMsg = (char *)pCreateMsg->schema;
-
-    pSchema = (SSchema *)pCreateMsg->schema;
-
+    pCreate->igExists = pCreateTable->existCheck ? 1 : 0;
+    pCreate->numOfColumns = htons(pCmd->numOfCols);
+    pCreate->numOfTags = htons(pCmd->count);
+    pCreate->sqlLen = 0;
+    pSchema = (SSchema *)pCreate->schema;
+    //copy schema
     for (int i = 0; i < pCmd->numOfCols + pCmd->count; ++i) {
       TAOS_FIELD *pField = tscFieldInfoGetField(&pQueryInfo->fieldsInfo, i);
-
       pSchema->type = pField->type;
       strcpy(pSchema->name, pField->name);
       pSchema->bytes = htons(pField->bytes);
-
       pSchema++;
     }
-
+    //copy stream sql if have
     pMsg = (char *)pSchema;
     if (type == TSQL_CREATE_STREAM) {  // check if it is a stream sql
       SSqlNode *pQuerySql = pInfo->pCreateTableInfo->pSelect;
+      int16_t len = 0;
+      if(to) {
+        //sql:
+        strcpy(pMsg, LABEL_SQL);
+        len += LABEL_SQL_LEN;
+        len += tStrNCpy(pMsg + len, &pQuerySql->sqlstr);
+        //to
+        strcpy(pMsg + len, LABEL_TO);
+        len += LABEL_TO_LEN;
+        len += tStrNCpy(pMsg + len, &pInfo->pCreateTableInfo->to);
+        //split if
+        if(pInfo->pCreateTableInfo->split.n > 0) {
+          strcpy(pMsg + len, LABEL_SPLIT);
+          len += LABEL_SPLIT_LEN;
+          len += tStrNCpy(pMsg + len, &pInfo->pCreateTableInfo->split);
+        }
+        // append string end flag
+        pMsg[len++] = 0;
+        pMsg += len;
+        pCreate->sqlLen = htons(len);
+      } else {
+        len = pQuerySql->sqlstr.n;
+        strncpy(pMsg, pQuerySql->sqlstr.z, len);
+        pMsg[len++] = 0; // string end
+        pMsg += len;
+        pCreate->sqlLen = htons(len);
+      }
+    }
+    // calc first msg length
+    int32_t len = (int32_t)(pMsg - (char*)pCreate);
+    pCreate->len = htonl(len);
 
-      strncpy(pMsg, pQuerySql->sqlstr.z, pQuerySql->sqlstr.n + 1);
-      pCreateMsg->sqlLen = htons(pQuerySql->sqlstr.n + 1);
-      pMsg += pQuerySql->sqlstr.n + 1;
+    // filling second msg if to have value
+    if(to) {
+      pCreate = (SCreateTableMsg *)pMsg;
+      pMsg = fillCreateSTableMsg(pCreate, pCreateTable, pCmd, pInfo);
+      len = (int32_t)(pMsg - (char*)pCreate);
+      pCreate->len = htonl(len);
+      pCreateTableMsg->numOfTables = htonl(2); 
     }
   }
 

src/client/src/tscSql.c

@@ -28,6 +28,7 @@
 #include "tutil.h"
 #include "ttimer.h"
 #include "tscProfile.h"
+#include "tidpool.h"
 
 static char clusterDefaultId[] = "clusterDefaultId";
 static bool validImpl(const char* str, size_t maxsize) {
@@ -307,6 +308,25 @@ void taos_close(TAOS *taos) {
   taosRemoveRef(tscRefId, pObj->rid);
 }
 
+// get taos connection unused session number
+int32_t taos_unused_session(TAOS* taos) {
+  // param valid check
+  STscObj *pObj = (STscObj *)taos;
+  if (pObj == NULL || pObj->signature != pObj) {
+    tscError("pObj:%p is NULL or freed", pObj);
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return 0;
+  }
+  if(pObj->pRpcObj == NULL ) {
+    tscError("pObj:%p pRpcObj is NULL.", pObj);
+    terrno = TSDB_CODE_TSC_DISCONNECTED;
+    return 0;
+  }
+
+  // get number
+  return rpcUnusedSession(pObj->pRpcObj->pDnodeConn, false);
+}
+
 void waitForQueryRsp(void *param, TAOS_RES *tres, int code) {
   assert(tres != NULL);
   
@@ -807,13 +827,16 @@ bool taos_is_update_query(TAOS_RES *res) {
   SSqlCmd* pCmd = &pSql->cmd;
   return ((pCmd->command >= TSDB_SQL_INSERT && pCmd->command <= TSDB_SQL_DROP_DNODE) || TSDB_SQL_RESET_CACHE == pCmd->command || TSDB_SQL_USE_DB == pCmd->command);
 }
-
 int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields) {
+  return taos_print_row_ex(str, row, fields, num_fields, ' ', false);
+}
+
+int taos_print_row_ex(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields, char split, bool addQuota) {
   int len = 0;
 
   for (int i = 0; i < num_fields; ++i) {
     if (i > 0) {
-      str[len++] = ' ';
+      str[len++] = split;
     }
 
     if (row[i] == NULL) {
@@ -874,9 +897,23 @@ int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields)
         } else {
           assert(charLen <= fields[i].bytes * TSDB_NCHAR_SIZE && charLen >= 0);
         }
+        
+        // add pre quotaion if require
+        if(addQuota) {
+          *(str + len) = '\'';
+          len += 1;
+        }
 
+        // copy content
         memcpy(str + len, row[i], charLen);
         len += charLen;
+
+        // add end quotaion if require
+        if(addQuota) {
+          *(str + len)= '\'';
+          len += 1;
+        }
+
       } break;
 
       case TSDB_DATA_TYPE_TIMESTAMP:
@@ -893,6 +930,89 @@ int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields)
   return len;
 }
 
+// print field value to str
+int taos_print_field(char *str, void* value, TAOS_FIELD *field) {
+  // check valid
+  if (str == NULL || value == NULL || field == NULL) {
+    return 0;
+  }
+
+  // get value
+  int len = 0;
+  switch (field->type) {
+    //
+    // fixed length
+    //
+    case TSDB_DATA_TYPE_TINYINT:
+      len = sprintf(str, "%d", *((int8_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_UTINYINT:
+      len = sprintf(str, "%u", *((uint8_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_SMALLINT:
+      len = sprintf(str, "%d", *((int16_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_USMALLINT:
+      len = sprintf(str, "%u", *((uint16_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_INT:
+      len = sprintf(str, "%d", *((int32_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_UINT:
+      len = sprintf(str, "%u", *((uint32_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_BIGINT:
+      len = sprintf(str, "%" PRId64, *((int64_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_UBIGINT:
+      len = sprintf(str, "%" PRIu64, *((uint64_t *)value));
+      break;
+
+    case TSDB_DATA_TYPE_FLOAT: {
+      float fv = 0;
+      fv = GET_FLOAT_VAL(value);
+      len = sprintf(str, "%f", fv);
+    } break;
+
+    case TSDB_DATA_TYPE_DOUBLE: {
+      double dv = 0;
+      dv = GET_DOUBLE_VAL(value);
+      len = sprintf(str, "%lf", dv);
+    } break;
+
+    case TSDB_DATA_TYPE_TIMESTAMP:
+      len = sprintf(str, "%" PRId64, *((int64_t *)value));
+      break;
+    case TSDB_DATA_TYPE_BOOL:
+      len = sprintf(str, "%d", *((int8_t *)value));
+
+    // 
+    //  variant length
+    //
+    case TSDB_DATA_TYPE_BINARY:
+    case TSDB_DATA_TYPE_NCHAR: {
+      len = varDataLen((char*)value - VARSTR_HEADER_SIZE);
+      if (field->type == TSDB_DATA_TYPE_BINARY) {
+        assert(len <= field->bytes && len >= 0);
+      } else {
+        assert(len <= field->bytes * TSDB_NCHAR_SIZE && len >= 0);
+      }
+      memcpy(str, value, len);
+    } break;
+  
+    default:
+      break;
+  }
+  return len;
+}
+
 static void asyncCallback(void *param, TAOS_RES *tres, int code) {
   assert(param != NULL);
   SSqlObj *pSql = ((SSqlObj *)param);

src/common/inc/tglobal.h

@@ -83,7 +83,7 @@ extern int32_t tsMaxNumOfOrderedResults;
 extern int32_t tsMinSlidingTime;
 extern int32_t tsMinIntervalTime;
 extern int32_t tsMaxStreamComputDelay;
-extern int32_t tsStreamCompStartDelay;
+extern int32_t tsFirstLaunchDelay;
 extern int32_t tsRetryStreamCompDelay;
 extern float   tsStreamComputDelayRatio;  // the delayed computing ration of the whole time window
 extern int32_t tsProjectExecInterval;

src/common/src/tglobal.c

@@ -107,11 +107,11 @@ int32_t tsMinIntervalTime = 1;
 // 20sec, the maximum value of stream computing delay, changed accordingly
 int32_t tsMaxStreamComputDelay = 20000;
 
-// 10sec, the first stream computing delay time after system launched successfully, changed accordingly
-int32_t tsStreamCompStartDelay = 10000;
+// 10sec, the stream first launched to execute delay time after system launched successfully, changed accordingly
+int32_t tsFirstLaunchDelay = 10000;
 
 // the stream computing delay time after executing failed, change accordingly
-int32_t tsRetryStreamCompDelay = 10 * 1000;
+int32_t tsRetryStreamCompDelay = 30 * 60 * 1000;
 
 // The delayed computing ration. 10% of the whole computing time window by default.
 float tsStreamComputDelayRatio = 0.1f;
@@ -798,7 +798,7 @@ static void doInitGlobalConfig(void) {
   taosInitConfigOption(cfg);
 
   cfg.option = "maxFirstStreamCompDelay";
-  cfg.ptr = &tsStreamCompStartDelay;
+  cfg.ptr = &tsFirstLaunchDelay;
   cfg.valType = TAOS_CFG_VTYPE_INT32;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
   cfg.minValue = 1000;

src/cq/src/cqMain.c

@@ -423,7 +423,7 @@ static void cqProcessCreateTimer(void *param, void *tmrId) {
 }
 
 // inner implement in tscStream.c
-TAOS_STREAM *taos_open_stream_withname(TAOS *taos, const char* desName, const char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
+TAOS_STREAM *taos_open_stream_withname(TAOS *taos, const char* desName, int32_t dstCols, const char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
                               int64_t stime, void *param, void (*callback)(void *), void* cqhandle);
 
 static void cqCreateStream(SCqContext *pContext, SCqObj *pObj) {
@@ -436,9 +436,11 @@ static void cqCreateStream(SCqContext *pContext, SCqObj *pObj) {
   }
 
   pObj->tmrId = 0;
-
+  int32_t dstCols = -1;
+  if(pObj->pSchema)
+    dstCols = pObj->pSchema->numOfCols;
   if (pObj->pStream == NULL) {
-    pObj->pStream = taos_open_stream_withname(pContext->dbConn, pObj->dstTable, pObj->sqlStr, cqProcessStreamRes, \
+    pObj->pStream = taos_open_stream_withname(pContext->dbConn, pObj->dstTable, dstCols, pObj->sqlStr, cqProcessStreamRes, \
                                                INT64_MIN, (void *)pObj->rid, NULL, pContext);
 
     // TODO the pObj->pStream may be released if error happens

src/inc/taos.h

@@ -173,7 +173,11 @@ DLL_EXPORT int taos_num_fields(TAOS_RES *res);
 DLL_EXPORT int taos_affected_rows(TAOS_RES *res);
 DLL_EXPORT TAOS_FIELD *taos_fetch_fields(TAOS_RES *res);
 DLL_EXPORT int taos_select_db(TAOS *taos, const char *db);
+// row to string
 DLL_EXPORT int taos_print_row(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields);
+DLL_EXPORT int taos_print_row_ex(char *str, TAOS_ROW row, TAOS_FIELD *fields, int num_fields, char split, bool addQuota);
+// one field to string 
+DLL_EXPORT int taos_print_field(char *str, void* value, TAOS_FIELD *field);
 DLL_EXPORT void taos_stop_query(TAOS_RES *res);
 DLL_EXPORT bool taos_is_null(TAOS_RES *res, int32_t row, int32_t col);
 DLL_EXPORT bool taos_is_update_query(TAOS_RES *res);

src/inc/trpc.h

@@ -92,6 +92,7 @@ int   rpcGetConnInfo(void *thandle, SRpcConnInfo *pInfo);
 void  rpcSendRecv(void *shandle, SRpcEpSet *pEpSet, SRpcMsg *pReq, SRpcMsg *pRsp);
 int   rpcReportProgress(void *pConn, char *pCont, int contLen);
 void  rpcCancelRequest(int64_t rid);
+int32_t rpcUnusedSession(void * rpcInfo, bool bLock);
 
 #ifdef __cplusplus
 }

src/inc/ttokendef.h

@@ -136,86 +136,88 @@
 #define TK_UNSIGNED                       118
 #define TK_TAGS                           119
 #define TK_USING                          120
-#define TK_NULL                           121
-#define TK_NOW                            122
-#define TK_VARIABLE                       123
-#define TK_SELECT                         124
-#define TK_UNION                          125
-#define TK_ALL                            126
-#define TK_DISTINCT                       127
-#define TK_FROM                           128
-#define TK_RANGE                          129
-#define TK_INTERVAL                       130
-#define TK_EVERY                          131
-#define TK_SESSION                        132
-#define TK_STATE_WINDOW                   133
-#define TK_FILL                           134
-#define TK_SLIDING                        135
-#define TK_ORDER                          136
-#define TK_BY                             137
-#define TK_ASC                            138
-#define TK_GROUP                          139
-#define TK_HAVING                         140
-#define TK_LIMIT                          141
-#define TK_OFFSET                         142
-#define TK_SLIMIT                         143
-#define TK_SOFFSET                        144
-#define TK_WHERE                          145
-#define TK_RESET                          146
-#define TK_QUERY                          147
-#define TK_SYNCDB                         148
-#define TK_ADD                            149
-#define TK_COLUMN                         150
-#define TK_MODIFY                         151
-#define TK_TAG                            152
-#define TK_CHANGE                         153
-#define TK_SET                            154
-#define TK_KILL                           155
-#define TK_CONNECTION                     156
-#define TK_STREAM                         157
-#define TK_COLON                          158
-#define TK_ABORT                          159
-#define TK_AFTER                          160
-#define TK_ATTACH                         161
-#define TK_BEFORE                         162
-#define TK_BEGIN                          163
-#define TK_CASCADE                        164
-#define TK_CLUSTER                        165
-#define TK_CONFLICT                       166
-#define TK_COPY                           167
-#define TK_DEFERRED                       168
-#define TK_DELIMITERS                     169
-#define TK_DETACH                         170
-#define TK_EACH                           171
-#define TK_END                            172
-#define TK_EXPLAIN                        173
-#define TK_FAIL                           174
-#define TK_FOR                            175
-#define TK_IGNORE                         176
-#define TK_IMMEDIATE                      177
-#define TK_INITIALLY                      178
-#define TK_INSTEAD                        179
-#define TK_KEY                            180
-#define TK_OF                             181
-#define TK_RAISE                          182
-#define TK_REPLACE                        183
-#define TK_RESTRICT                       184
-#define TK_ROW                            185
-#define TK_STATEMENT                      186
-#define TK_TRIGGER                        187
-#define TK_VIEW                           188
-#define TK_IPTOKEN                        189
-#define TK_SEMI                           190
-#define TK_NONE                           191
-#define TK_PREV                           192
-#define TK_LINEAR                         193
-#define TK_IMPORT                         194
-#define TK_TBNAME                         195
-#define TK_JOIN                           196
-#define TK_INSERT                         197
-#define TK_INTO                           198
-#define TK_VALUES                         199
-#define TK_FILE                           200
+#define TK_TO                             121
+#define TK_SPLIT                          122
+#define TK_NULL                           123
+#define TK_NOW                            124
+#define TK_VARIABLE                       125
+#define TK_SELECT                         126
+#define TK_UNION                          127
+#define TK_ALL                            128
+#define TK_DISTINCT                       129
+#define TK_FROM                           130
+#define TK_RANGE                          131
+#define TK_INTERVAL                       132
+#define TK_EVERY                          133
+#define TK_SESSION                        134
+#define TK_STATE_WINDOW                   135
+#define TK_FILL                           136
+#define TK_SLIDING                        137
+#define TK_ORDER                          138
+#define TK_BY                             139
+#define TK_ASC                            140
+#define TK_GROUP                          141
+#define TK_HAVING                         142
+#define TK_LIMIT                          143
+#define TK_OFFSET                         144
+#define TK_SLIMIT                         145
+#define TK_SOFFSET                        146
+#define TK_WHERE                          147
+#define TK_RESET                          148
+#define TK_QUERY                          149
+#define TK_SYNCDB                         150
+#define TK_ADD                            151
+#define TK_COLUMN                         152
+#define TK_MODIFY                         153
+#define TK_TAG                            154
+#define TK_CHANGE                         155
+#define TK_SET                            156
+#define TK_KILL                           157
+#define TK_CONNECTION                     158
+#define TK_STREAM                         159
+#define TK_COLON                          160
+#define TK_ABORT                          161
+#define TK_AFTER                          162
+#define TK_ATTACH                         163
+#define TK_BEFORE                         164
+#define TK_BEGIN                          165
+#define TK_CASCADE                        166
+#define TK_CLUSTER                        167
+#define TK_CONFLICT                       168
+#define TK_COPY                           169
+#define TK_DEFERRED                       170
+#define TK_DELIMITERS                     171
+#define TK_DETACH                         172
+#define TK_EACH                           173
+#define TK_END                            174
+#define TK_EXPLAIN                        175
+#define TK_FAIL                           176
+#define TK_FOR                            177
+#define TK_IGNORE                         178
+#define TK_IMMEDIATE                      179
+#define TK_INITIALLY                      180
+#define TK_INSTEAD                        181
+#define TK_KEY                            182
+#define TK_OF                             183
+#define TK_RAISE                          184
+#define TK_REPLACE                        185
+#define TK_RESTRICT                       186
+#define TK_ROW                            187
+#define TK_STATEMENT                      188
+#define TK_TRIGGER                        189
+#define TK_VIEW                           190
+#define TK_IPTOKEN                        191
+#define TK_SEMI                           192
+#define TK_NONE                           193
+#define TK_PREV                           194
+#define TK_LINEAR                         195
+#define TK_IMPORT                         196
+#define TK_TBNAME                         197
+#define TK_JOIN                           198
+#define TK_INSERT                         199
+#define TK_INTO                           200
+#define TK_VALUES                         201
+#define TK_FILE                           202
 
 
 #define TK_SPACE                          300

src/mnode/src/mnodeTable.c

@@ -851,15 +851,15 @@ static int32_t mnodeProcessBatchCreateTableMsg(SMnodeMsg *pMsg) {
       memcpy(pSubMsg->pCont + sizeof(SCMCreateTableMsg), p, htonl(p->len));
       code = mnodeValidateCreateTableMsg(p, pSubMsg);
 
-      if (code == TSDB_CODE_SUCCESS || code == TSDB_CODE_MND_TABLE_ALREADY_EXIST) {
-	++pSubMsg->pBatchMasterMsg->successed;
-	mnodeDestroySubMsg(pSubMsg);
-	continue;
+      if (code == TSDB_CODE_SUCCESS || ( p->igExists == 1 && code == TSDB_CODE_MND_TABLE_ALREADY_EXIST )) {
+        ++pSubMsg->pBatchMasterMsg->successed;
+        mnodeDestroySubMsg(pSubMsg);
+        continue;
       }
 
       if (code != TSDB_CODE_MND_ACTION_IN_PROGRESS) {
-	mnodeDestroySubMsg(pSubMsg);
-	return code;
+        mnodeDestroySubMsg(pSubMsg);
+        return code;
       }
     }
 
@@ -1046,11 +1046,21 @@ static int32_t mnodeCreateSuperTableCb(SMnodeMsg *pMsg, int32_t code) {
 
   if (code == TSDB_CODE_SUCCESS) {
     mLInfo("stable:%s, is created in sdb, uid:%" PRIu64, pTable->info.tableId, pTable->uid);
+    if(pMsg->pBatchMasterMsg)
+      pMsg->pBatchMasterMsg->successed ++;    
   } else {
     mError("msg:%p, app:%p stable:%s, failed to create in sdb, reason:%s", pMsg, pMsg->rpcMsg.ahandle, pTable->info.tableId,
            tstrerror(code));
     SSdbRow desc = {.type = SDB_OPER_GLOBAL, .pObj = pTable, .pTable = tsSuperTableSdb};
     sdbDeleteRow(&desc);
+    if(pMsg->pBatchMasterMsg)
+      pMsg->pBatchMasterMsg->received ++;
+  }
+
+  // if super table create by batch msg, check done and send finished to client
+  if(pMsg->pBatchMasterMsg) {
+    if (pMsg->pBatchMasterMsg->successed + pMsg->pBatchMasterMsg->received >= pMsg->pBatchMasterMsg->expected)
+      dnodeSendRpcMWriteRsp(pMsg->pBatchMasterMsg, code);    
   }
 
   return code;

src/query/inc/qSqlparser.h

@@ -25,6 +25,7 @@ extern "C" {
 #include "tstrbuild.h"
 #include "ttoken.h"
 #include "tvariant.h"
+#include "tname.h"
 
 #define ParseTOKENTYPE SStrToken
 
@@ -156,8 +157,11 @@ typedef struct SCreatedTableInfo {
 
 typedef struct SCreateTableSql {
   SStrToken          name;  // table name, create table [name] xxx
+  SStrToken          to;    // create stream to anohter table  
+  SStrToken          split; // split columns  
   int8_t             type;  // create normal table/from super table/ stream
   bool               existCheck;
+  SName              toSName;
 
   struct {
     SArray          *pTagColumns; // SArray<TAOS_FIELD>
@@ -334,6 +338,7 @@ SArray   *setSubclause(SArray *pList, void *pSqlNode);
 SArray   *appendSelectClause(SArray *pList, void *pSubclause);
 
 void setCreatedTableName(SSqlInfo *pInfo, SStrToken *pTableNameToken, SStrToken *pIfNotExists);
+void setCreatedStreamOpt(SSqlInfo *pInfo, SStrToken *pTo, SStrToken *pSplit);
 
 void SqlInfoDestroy(SSqlInfo *pInfo);
 

src/query/inc/sql.y

@@ -411,14 +411,28 @@ tagNamelist(A) ::= ids(X).                      {A = taosArrayInit(4, sizeof(SSt
 
 // create stream
 // create table table_name as select count(*) from super_table_name interval(time)
-create_table_args(A) ::= ifnotexists(U) ids(V) cpxName(Z) AS select(S). {
+create_table_args(A) ::= ifnotexists(U) ids(V) cpxName(Z) to_opt(E) split_opt(F) AS select(S). {
   A = tSetCreateTableInfo(NULL, NULL, S, TSQL_CREATE_STREAM);
   setSqlInfo(pInfo, A, NULL, TSDB_SQL_CREATE_TABLE);
 
+  setCreatedStreamOpt(pInfo, &E, &F);
   V.n += Z.n;
   setCreatedTableName(pInfo, &V, &U);
 }
 
+// to_opt
+%type to_opt {SStrToken}
+to_opt(A) ::= . {A.n = 0;}
+to_opt(A) ::= TO ids(X) cpxName(Y). {
+   A = X;
+   A.n += Y.n;
+}
+
+// split_opt
+%type to_split {SStrToken}
+split_opt(A) ::= . {A.n = 0;}
+split_opt(A) ::= SPLIT ids(X). { A = X;}
+
 %type column{TAOS_FIELD}
 %type columnlist{SArray*}
 %destructor columnlist {taosArrayDestroy(&$$);}

src/query/src/qSqlParser.c

@@ -1244,6 +1244,11 @@ void setCreatedTableName(SSqlInfo *pInfo, SStrToken *pTableNameToken, SStrToken
   pInfo->pCreateTableInfo->existCheck = (pIfNotExists->n != 0);
 }
 
+void setCreatedStreamOpt(SSqlInfo *pInfo, SStrToken *pTo, SStrToken *pSplit) {
+  pInfo->pCreateTableInfo->to = *pTo;
+  pInfo->pCreateTableInfo->split = *pSplit;
+}
+
 void setDCLSqlElems(SSqlInfo *pInfo, int32_t type, int32_t nParam, ...) {
   pInfo->type = type;
   if (nParam == 0) {

src/query/src/queryMain.c

@@ -225,51 +225,6 @@ int32_t qCreateQueryInfo(void* tsdb, int32_t vgId, SQueryTableMsg* pQueryMsg, qi
   return code;
 }
 
-#ifdef TEST_IMPL
-// wait moment
-int waitMoment(SQInfo* pQInfo){
-  if(pQInfo->sql) {
-    int ms = 0;
-    char* pcnt = strstr(pQInfo->sql, " count(*)");
-    if(pcnt) return 0;
-    
-    char* pos = strstr(pQInfo->sql, " t_");
-    if(pos){
-      pos += 3;
-      ms = atoi(pos);
-      while(*pos >= '0' && *pos <= '9'){
-        pos ++;
-      }
-      char unit_char = *pos;
-      if(unit_char == 'h'){
-        ms *= 3600*1000;
-      } else if(unit_char == 'm'){
-        ms *= 60*1000;
-      } else if(unit_char == 's'){
-        ms *= 1000;
-      }
-    }
-    if(ms == 0) return 0;
-    printf("test wait sleep %dms. sql=%s ...\n", ms, pQInfo->sql);
-    
-    if(ms < 1000) {
-      taosMsleep(ms);
-    } else {
-      int used_ms = 0;
-      while(used_ms < ms) {
-        taosMsleep(1000);
-        used_ms += 1000;
-        if(isQueryKilled(pQInfo)){
-          printf("test check query is canceled, sleep break.%s\n", pQInfo->sql);
-          break;
-        }
-      }
-    }
-  }
-  return 1;
-}
-#endif
-
 bool qTableQuery(qinfo_t qinfo, uint64_t *qId) {
   SQInfo *pQInfo = (SQInfo *)qinfo;
   assert(pQInfo && pQInfo->signature == pQInfo);

src/rpc/src/rpcMain.c

@@ -1677,3 +1677,9 @@ static void rpcDecRef(SRpcInfo *pRpc)
   }
 }
 
+int32_t rpcUnusedSession(void * rpcInfo, bool bLock) {
+  SRpcInfo *info = (SRpcInfo *)rpcInfo;
+  if(info == NULL)
+     return 0;
+  return taosIdPoolNumOfFree(info->idPool, bLock);
+}
\ No newline at end of file

src/util/inc/tidpool.h

@@ -36,6 +36,9 @@ int taosIdPoolNumOfUsed(void *handle);
 
 bool taosIdPoolMarkStatus(void *handle, int id);
 
+// get free count from pool , if bLock is true, locked pool than get free count, accuracy but slowly 
+int taosIdPoolNumOfFree(void *handle, bool bLock);
+
 #ifdef __cplusplus
 }
 #endif

src/util/inc/ttoken.h

@@ -63,6 +63,15 @@ uint32_t tGetToken(char *z, uint32_t *tokenType);
  */
 SStrToken tStrGetToken(char *str, int32_t *i, bool isPrevOptr);
 
+/**
+ * strcpy implement source from SStrToken
+ *
+ * @param dst  copy to 
+ * @param srcToken copy from
+ * @return size of copy successful bytes, not include '\0'
+ */
+int32_t tStrNCpy(char *dst, SStrToken* srcToken);
+
 /**
  * check if it is a keyword or not
  * @param z

src/util/src/tidpool.c

@@ -163,4 +163,16 @@ int taosIdPoolMaxSize(void *handle) {
   pthread_mutex_unlock(&pIdPool->mutex);
 
   return ret;
+}
+
+// get free count from pool , if bLock is true, locked pool than get free count, accuracy but slowly 
+int taosIdPoolNumOfFree(void *handle, bool bLock) {
+  id_pool_t *pIdPool = handle;
+  if(bLock)
+    pthread_mutex_lock(&pIdPool->mutex);
+  
+  int ret = pIdPool->numOfFree;
+  if(bLock)
+    pthread_mutex_unlock(&pIdPool->mutex);
+  return ret;
 }
\ No newline at end of file

src/util/src/ttokenizer.c

@@ -231,7 +231,9 @@ static SKeyword keywordTable[] = {
     {"AGGREGATE",    TK_AGGREGATE},
     {"BUFSIZE",      TK_BUFSIZE},
     {"RANGE",        TK_RANGE},
-    {"CONTAINS",     TK_CONTAINS}
+    {"CONTAINS",     TK_CONTAINS},
+    {"TO",           TK_TO},
+    {"SPLIT",        TK_SPLIT}   
 };
 
 static const char isIdChar[] = {
@@ -704,6 +706,18 @@ SStrToken tStrGetToken(char* str, int32_t* i, bool isPrevOptr) {
   return t0;
 }
 
+/**
+ * strcpy implement source from SStrToken
+ *
+ * @param dst  copy to 
+ * @param srcToken copy from
+ * @return size of copy successful bytes
+ */
+int32_t tStrNCpy(char *dst, SStrToken* srcToken) {
+  strncpy(dst, srcToken->z, srcToken->n);
+  return srcToken->n;
+}
+
 bool taosIsKeyWordToken(const char* z, int32_t len) {
   return (tKeywordCode((char*)z, len) != TK_ID);
 }