[td-225]1) fix bug found by regression test; 2) refactor code.

src/client/inc/tsclient.h

@@ -423,7 +423,7 @@ void tscInitMsgsFp();
 int tsParseSql(SSqlObj *pSql, bool initial);
 
 void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcEpSet *pEpSet);
-int  tscProcessSql(SSqlObj *pSql, SQueryInfo* pQueryInfo);
+int  tscBuildAndSendRequest(SSqlObj *pSql, SQueryInfo* pQueryInfo);
 
 int  tscRenewTableMeta(SSqlObj *pSql, int32_t tableIndex);
 void tscAsyncResultOnError(SSqlObj *pSql);

src/client/src/tscAsync.c

@@ -180,7 +180,7 @@ static void tscProcessAsyncRetrieveImpl(void *param, TAOS_RES *tres, int numOfRo
   if (pCmd->command == TSDB_SQL_TABLE_JOIN_RETRIEVE) {
     tscFetchDatablockForSubquery(pSql);
   } else {
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
   }
 }
 
@@ -256,7 +256,7 @@ void taos_fetch_rows_a(TAOS_RES *tres, __async_cb_func_t fp, void *param) {
     }
 
     SQueryInfo* pQueryInfo1 = tscGetActiveQueryInfo(&pSql->cmd);
-    tscProcessSql(pSql, pQueryInfo1);
+    tscBuildAndSendRequest(pSql, pQueryInfo1);
   }
 }
 
@@ -396,8 +396,8 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
         goto _error;
       }
 
-      // tscProcessSql can add error into async res
-      tscProcessSql(pSql, NULL);
+      // tscBuildAndSendRequest can add error into async res
+      tscBuildAndSendRequest(pSql, NULL);
       taosReleaseRef(tscObjRef, pSql->self);
       return;
     } else {  // continue to process normal async query
@@ -428,9 +428,9 @@ void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {
             goto _error;
           }
 
-          tscProcessSql(pSql, NULL);
+          tscBuildAndSendRequest(pSql, NULL);
         } else {  // in all other cases, simple retry
-          tscProcessSql(pSql, NULL);
+          tscBuildAndSendRequest(pSql, NULL);
         }
 
         taosReleaseRef(tscObjRef, pSql->self);

src/client/src/tscLocalMerge.c

@@ -1051,6 +1051,7 @@ SSDataBlock* doMultiwayMergeSort(void* param, bool* newgroup) {
     }
   }
 
+  pOperator->status = OP_EXEC_DONE;
   return (pInfo->binfo.pRes->info.rows > 0)? pInfo->binfo.pRes:NULL;
 }
 

src/client/src/tscParseInsert.c

@@ -1381,7 +1381,7 @@ static int doPackSendDataBlock(SSqlObj *pSql, int32_t numOfRows, STableDataBlock
     return code;
   }
 
-  return tscProcessSql(pSql, NULL);
+  return tscBuildAndSendRequest(pSql, NULL);
 }
 
 typedef struct SImportFileSupport {

src/client/src/tscPrepare.c

@@ -815,7 +815,7 @@ static int insertStmtExecute(STscStmt* stmt) {
   pRes->numOfRows  = 0;
   pRes->numOfTotal = 0;
 
-  tscProcessSql(pSql, NULL);
+  tscBuildAndSendRequest(pSql, NULL);
 
   // wait for the callback function to post the semaphore
   tsem_wait(&pSql->rspSem);

src/client/src/tscServer.c

@@ -270,7 +270,7 @@ void tscProcessActivityTimer(void *handle, void *tmrId) {
   assert(pHB->self == pObj->hbrid);
 
   pHB->retry = 0;
-  int32_t code = tscProcessSql(pHB, NULL);
+  int32_t code = tscBuildAndSendRequest(pHB, NULL);
   taosReleaseRef(tscObjRef, pObj->hbrid);
 
   if (code != TSDB_CODE_SUCCESS) {
@@ -467,7 +467,7 @@ void tscProcessMsgFromServer(SRpcMsg *rpcMsg, SRpcEpSet *pEpSet) {
   rpcFreeCont(rpcMsg->pCont);
 }
 
-int doProcessSql(SSqlObj *pSql) {
+int doBuildAndSendMsg(SSqlObj *pSql) {
   SSqlCmd *pCmd = &pSql->cmd;
   SSqlRes *pRes = &pSql->res;
 
@@ -499,7 +499,7 @@ int doProcessSql(SSqlObj *pSql) {
   return TSDB_CODE_SUCCESS;
 }
 
-int tscProcessSql(SSqlObj *pSql, SQueryInfo* pQueryInfo) {
+int tscBuildAndSendRequest(SSqlObj *pSql, SQueryInfo* pQueryInfo) {
   char name[TSDB_TABLE_FNAME_LEN] = {0};
 
   SSqlCmd *pCmd = &pSql->cmd;
@@ -533,7 +533,7 @@ int tscProcessSql(SSqlObj *pSql, SQueryInfo* pQueryInfo) {
     return (*tscProcessMsgRsp[pCmd->command])(pSql);
   }
   
-  return doProcessSql(pSql);
+  return doBuildAndSendMsg(pSql);
 }
 
 int tscBuildFetchMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
@@ -816,6 +816,7 @@ static int32_t serializeSqlExpr(SSqlExpr* pExpr, STableMetaInfo* pTableMetaInfo,
 int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   SSqlCmd *pCmd = &pSql->cmd;
 
+  int32_t code = TSDB_CODE_SUCCESS;
   int32_t size = tscEstimateQueryMsgSize(pSql, pCmd->clauseIndex);
 
   if (TSDB_CODE_SUCCESS != tscAllocPayload(pCmd, size)) {
@@ -907,16 +908,16 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   }
 
   for (int32_t i = 0; i < query.numOfOutput; ++i) {
-    int32_t code = serializeSqlExpr(&query.pExpr1[i].base, pTableMetaInfo, &pMsg, pSql);
+    code = serializeSqlExpr(&query.pExpr1[i].base, pTableMetaInfo, &pMsg, pSql);
     if (code != TSDB_CODE_SUCCESS) {
-      return code;
+      goto _end;
     }
   }
 
   for (int32_t i = 0; i < query.numOfExpr2; ++i) {
-    int32_t code = serializeSqlExpr(&query.pExpr2[i].base, pTableMetaInfo, &pMsg, pSql);
+    code = serializeSqlExpr(&query.pExpr2[i].base, pTableMetaInfo, &pMsg, pSql);
     if (code != TSDB_CODE_SUCCESS) {
-      return code;
+      goto _end;
     }
   }
 
@@ -925,7 +926,8 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   // serialize the table info (sid, uid, tags)
   pMsg = doSerializeTableInfo(pQueryMsg, pSql, pTableMetaInfo, pMsg, &succeed);
   if (succeed == 0) {
-    return TSDB_CODE_TSC_APP_ERROR;
+    code = TSDB_CODE_TSC_APP_ERROR;
+    goto _end;
   }
   
   SSqlGroupbyExpr *pGroupbyExpr = query.pGroupbyExpr;
@@ -1001,9 +1003,9 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   if (pQueryInfo->tsBuf != NULL) {
     // note: here used the index instead of actual vnode id.
     int32_t vnodeIndex = pTableMetaInfo->vgroupIndex;
-    int32_t code = dumpFileBlockByGroupId(pQueryInfo->tsBuf, vnodeIndex, pMsg, &pQueryMsg->tsBuf.tsLen, &pQueryMsg->tsBuf.tsNumOfBlocks);
+    code = dumpFileBlockByGroupId(pQueryInfo->tsBuf, vnodeIndex, pMsg, &pQueryMsg->tsBuf.tsLen, &pQueryMsg->tsBuf.tsNumOfBlocks);
     if (code != TSDB_CODE_SUCCESS) {
-      return code;
+      goto _end;
     }
 
     pMsg += pQueryMsg->tsBuf.tsLen;
@@ -1034,11 +1036,11 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
   pQueryMsg->head.contLen = htonl(msgLen);
   assert(msgLen + minMsgSize() <= (int32_t)pCmd->allocSize);
 
+  _end:
   freeQueryAttr(&query);
   taosArrayDestroy(tableScanOperator);
   taosArrayDestroy(queryOperator);
-
-  return TSDB_CODE_SUCCESS;
+  return code;
 }
 
 int32_t tscBuildCreateDbMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
@@ -2430,7 +2432,7 @@ static int32_t getTableMetaFromMnode(SSqlObj *pSql, STableMetaInfo *pTableMetaIn
   
   pSql->metaRid = pNew->self;
 
-  int32_t code = tscProcessSql(pNew, NULL);
+  int32_t code = tscBuildAndSendRequest(pNew, NULL);
   if (code == TSDB_CODE_SUCCESS) {
     code = TSDB_CODE_TSC_ACTION_IN_PROGRESS;  // notify application that current process needs to be terminated
   }
@@ -2566,7 +2568,7 @@ int tscGetSTableVgroupInfo(SSqlObj *pSql, int32_t clauseIndex) {
 
   pNew->fp = tscTableMetaCallBack;
   pNew->param = (void *)pSql->self;
-  code = tscProcessSql(pNew, NULL);
+  code = tscBuildAndSendRequest(pNew, NULL);
   if (code == TSDB_CODE_SUCCESS) {
     code = TSDB_CODE_TSC_ACTION_IN_PROGRESS;
   }

src/client/src/tscSql.c

@@ -191,7 +191,7 @@ TAOS *taos_connect_internal(const char *ip, const char *user, const char *pass,
     pSql->fp = syncConnCallback;
     pSql->param = pSql;
 
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
     tsem_wait(&pSql->rspSem);
 
     if (pSql->res.code != TSDB_CODE_SUCCESS) {
@@ -265,7 +265,7 @@ TAOS *taos_connect_a(char *ip, char *user, char *pass, char *db, uint16_t port,
   if (taos) *taos = pObj;
 
   pSql->fetchFp = fp;
-  pSql->res.code = tscProcessSql(pSql, NULL);
+  pSql->res.code = tscBuildAndSendRequest(pSql, NULL);
   tscDebug("%p DB async connection is opening", taos);
   return pObj;
 }
@@ -578,7 +578,7 @@ static bool tscKillQueryInDnode(SSqlObj* pSql) {
     pCmd->command = (pCmd->command > TSDB_SQL_MGMT) ? TSDB_SQL_RETRIEVE : TSDB_SQL_FETCH;
     tscDebug("0x%"PRIx64" send msg to dnode to free qhandle ASAP before free sqlObj, command:%s", pSql->self, sqlCmd[pCmd->command]);
 
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
     return false;
   }
 
@@ -1048,7 +1048,7 @@ int taos_load_table_info(TAOS *taos, const char *tableNameList) {
 
   /*
    * set the qhandle to 0 before return in order to erase the qhandle value assigned in the previous successful query.
-   * If qhandle is NOT set 0, the function of taos_free_result() will send message to server by calling tscProcessSql()
+   * If qhandle is NOT set 0, the function of taos_free_result() will send message to server by calling tscBuildAndSendRequest()
    * to free connection, which may cause segment fault, when the parse phrase is not even successfully executed.
    */
   pRes->qId = 0;
@@ -1061,7 +1061,7 @@ int taos_load_table_info(TAOS *taos, const char *tableNameList) {
 
   tscDoQuery(pSql);
 
-  tscDebug("0x%"PRIx64" load multi table meta result:%d %s pObj:%p", pSql->self, pRes->code, taos_errstr(pSql), pObj);
+  tscDebug("0x%"PRIx64" load multi-table meta result:%d %s pObj:%p", pSql->self, pRes->code, taos_errstr(pSql), pObj);
   if ((code = pRes->code) != TSDB_CODE_SUCCESS) {
     tscFreeSqlObj(pSql);
   }

src/client/src/tscStream.c

@@ -113,10 +113,11 @@ static void doLaunchQuery(void* param, TAOS_RES* tres, int32_t code) {
     tscDebug("0x%"PRIx64" stream:%p, start stream query on:%s", pSql->self, pStream, tNameGetTableName(&pTableMetaInfo->name));
 
     pQueryInfo->command = TSDB_SQL_SELECT;
+    pSql->cmd.active = pQueryInfo;
 
     pSql->fp = tscProcessStreamQueryCallback;
     pSql->fetchFp = tscProcessStreamQueryCallback;
-    tscDoQuery(pSql);
+    executeQuery(pSql, pQueryInfo);
     tscIncStreamExecutionCount(pStream);
   } else {
     setRetryInfo(pStream, code);

src/client/src/tscSub.c

@@ -557,7 +557,10 @@ TAOS_RES *taos_consume(TAOS_SUB *tsub) {
     pSql->fp = asyncCallback;
     pSql->fetchFp = asyncCallback;
     pSql->param = pSub;
-    tscDoQuery(pSql);
+
+    pSql->cmd.active = pQueryInfo;
+    executeQuery(pSql, pQueryInfo);
+
     tsem_wait(&pSub->sem);
 
     if (pRes->code != TSDB_CODE_SUCCESS) {

src/client/src/tscSubquery.c

@@ -855,7 +855,7 @@ static void issueTsCompQuery(SSqlObj* pSql, SJoinSupporter* pSupporter, SSqlObj*
       pParent, pSql, 0, pTableMetaInfo->vgroupIndex, pTableMetaInfo->vgroupList->numOfVgroups, pQueryInfo->type,
       tscSqlExprNumOfExprs(pQueryInfo), numOfCols, pQueryInfo->fieldsInfo.numOfOutput, tNameGetTableName(&pTableMetaInfo->name));
   
-  tscProcessSql(pSql, NULL);
+  tscBuildAndSendRequest(pSql, NULL);
 }
 
 static bool checkForDuplicateTagVal(SSchema* pColSchema, SJoinSupporter* p1, SSqlObj* pPSqlObj) {
@@ -1176,7 +1176,7 @@ static void tidTagRetrieveCallback(void* param, TAOS_RES* tres, int32_t numOfRow
 
     // set the callback function
     pSql->fp = tscJoinQueryCallback;
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
     return;
   }
 
@@ -1360,7 +1360,7 @@ static void tsCompRetrieveCallback(void* param, TAOS_RES* tres, int32_t numOfRow
 
     // set the callback function
     pSql->fp = tscJoinQueryCallback;
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
     return;
   }
 
@@ -1445,7 +1445,7 @@ static void joinRetrieveFinalResCallback(void* param, TAOS_RES* tres, int numOfR
       pSql->cmd.command = TSDB_SQL_SELECT;
       pSql->fp = tscJoinQueryCallback;
 
-      tscProcessSql(pSql, NULL);
+      tscBuildAndSendRequest(pSql, NULL);
       return;
     } else {
       tscDebug("0x%"PRIx64" no result in current subquery anymore", pSql->self);
@@ -1605,7 +1605,7 @@ void tscFetchDatablockForSubquery(SSqlObj* pSql) {
           pSub->cmd.command = TSDB_SQL_SELECT;
           pSub->fp = tscJoinQueryCallback;
 
-          tscProcessSql(pSub, NULL);
+          tscBuildAndSendRequest(pSub, NULL);
           tryNextVnode = true;
         } else {
           tscDebug("0x%"PRIx64" no result in current subquery anymore", pSub->self);
@@ -1675,7 +1675,7 @@ void tscFetchDatablockForSubquery(SSqlObj* pSql) {
         pCmd1->command = (pCmd1->command > TSDB_SQL_MGMT) ? TSDB_SQL_RETRIEVE : TSDB_SQL_FETCH;
       }
 
-      tscProcessSql(pSql1, NULL);
+      tscBuildAndSendRequest(pSql1, NULL);
     }
   }
 }
@@ -1775,7 +1775,7 @@ void tscJoinQueryCallback(void* param, TAOS_RES* tres, int code) {
   if (TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_TAG_FILTER_QUERY)) {
     pSql->fp = tidTagRetrieveCallback;
     pSql->cmd.command = TSDB_SQL_FETCH;
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
     return;
   }
 
@@ -1783,7 +1783,7 @@ void tscJoinQueryCallback(void* param, TAOS_RES* tres, int code) {
   if (!TSDB_QUERY_HAS_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_JOIN_SEC_STAGE)) {
     pSql->fp = tsCompRetrieveCallback;
     pSql->cmd.command = TSDB_SQL_FETCH;
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
     return;
   }
 
@@ -1804,7 +1804,7 @@ void tscJoinQueryCallback(void* param, TAOS_RES* tres, int code) {
     pSql->fp = joinRetrieveFinalResCallback;  // continue retrieve data
     pSql->cmd.command = TSDB_SQL_FETCH;
     
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
   } else {  // first retrieve from vnode during the secondary stage sub-query
     // set the command flag must be after the semaphore been correctly set.
     if (pParentSql->res.code == TSDB_CODE_SUCCESS) {
@@ -2021,7 +2021,7 @@ void tscHandleMasterJoinQuery(SSqlObj* pSql) {
         continue;
       }
       
-      if ((code = tscProcessSql(pSub, NULL)) != TSDB_CODE_SUCCESS) {
+      if ((code = tscBuildAndSendRequest(pSub, NULL)) != TSDB_CODE_SUCCESS) {
         pRes->code = code;
         (*pSub->fp)(pSub->param, pSub, 0);
         fail = 1;
@@ -2531,7 +2531,7 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
     SRetrieveSupport* pSupport = pSub->param;
     
     tscDebug("0x%"PRIx64" sub:%p launch subquery, orderOfSub:%d.", pSql->self, pSub, pSupport->subqueryIndex);
-    tscProcessSql(pSub, NULL);
+    tscBuildAndSendRequest(pSub, NULL);
   }
 
   return TSDB_CODE_SUCCESS;
@@ -2611,7 +2611,7 @@ static int32_t tscReissueSubquery(SRetrieveSupport *oriTrs, SSqlObj *pSql, int32
     return pParentSql->res.code;
   }
 
-  int32_t ret = tscProcessSql(pNew, NULL);
+  int32_t ret = tscBuildAndSendRequest(pNew, NULL);
 
   *sent = 1;
   
@@ -3123,7 +3123,7 @@ int32_t tscHandleInsertRetry(SSqlObj* pParent, SSqlObj* pSql) {
     return code;  // here the pSql may have been released already.
   }
 
-  return tscProcessSql(pSql, NULL);
+  return tscBuildAndSendRequest(pSql, NULL);
 }
 
 int32_t tscHandleMultivnodeInsert(SSqlObj *pSql) {
@@ -3222,7 +3222,7 @@ int32_t tscHandleMultivnodeInsert(SSqlObj *pSql) {
   for (int32_t j = 0; j < numOfSub; ++j) {
     SSqlObj *pSub = pSql->pSubs[j];
     tscDebug("0x%"PRIx64" sub:%p launch sub insert, orderOfSub:%d", pSql->self, pSub, j);
-    tscProcessSql(pSub, NULL);
+    tscBuildAndSendRequest(pSub, NULL);
   }
 
   return TSDB_CODE_SUCCESS;

src/client/src/tscUtil.c

@@ -2777,7 +2777,7 @@ void doExecuteQuery(SSqlObj* pSql, SQueryInfo* pQueryInfo) {
   } else if (pSql->cmd.command > TSDB_SQL_LOCAL) {
     tscProcessLocalCmd(pSql);
   } else { // send request to server directly
-    tscProcessSql(pSql, pQueryInfo);
+    tscBuildAndSendRequest(pSql, pQueryInfo);
   }
 }
 
@@ -2788,6 +2788,10 @@ void executeQuery(SSqlObj* pSql, SQueryInfo* pQueryInfo) {
     return;
   }
 
+  if (pSql->cmd.command == TSDB_SQL_SELECT) {
+    tscAddIntoSqlList(pSql);
+  }
+
   if (taosArrayGetSize(pQueryInfo->pUpstream) > 0) {  // nest query. do execute it firstly
     SQueryInfo* pq = taosArrayGetP(pQueryInfo->pUpstream, 0);
 
@@ -2805,6 +2809,7 @@ void executeQuery(SSqlObj* pSql, SQueryInfo* pQueryInfo) {
 }
 
 /**
+ * todo remove it
  * To decide if current is a two-stage super table query, join query, or insert. And invoke different
  * procedure accordingly
  * @param pSql
@@ -2835,14 +2840,14 @@ void tscDoQuery(SSqlObj* pSql) {
         tscHandleMasterJoinQuery(pSql);
       } else { // for first stage sub query, iterate all vnodes to get all timestamp
         if (!TSDB_QUERY_HAS_TYPE(type, TSDB_QUERY_TYPE_JOIN_SEC_STAGE)) {
-          tscProcessSql(pSql, NULL);
+          tscBuildAndSendRequest(pSql, NULL);
         } else { // secondary stage join query.
           if (tscIsTwoStageSTableQuery(pQueryInfo, 0)) {  // super table query
             tscLockByThread(&pSql->squeryLock);
             tscHandleMasterSTableQuery(pSql);
             tscUnlockByThread(&pSql->squeryLock);
           } else {
-            tscProcessSql(pSql, NULL);
+            tscBuildAndSendRequest(pSql, NULL);
           }
         }
       }
@@ -2858,7 +2863,8 @@ void tscDoQuery(SSqlObj* pSql) {
       return;
     }
 
-    tscProcessSql(pSql, NULL);
+    pCmd->active = pQueryInfo;
+    tscBuildAndSendRequest(pSql, NULL);
   }
 }
 
@@ -3074,7 +3080,7 @@ void tscTryQueryNextVnode(SSqlObj* pSql, __async_cb_func_t fp) {
 
     // set the callback function
     pSql->fp = fp;
-    tscProcessSql(pSql, NULL);
+    tscBuildAndSendRequest(pSql, NULL);
   } else {
     tscDebug("0x%"PRIx64" try all %d vnodes, query complete. current numOfRes:%" PRId64, pSql->self, totalVgroups, pRes->numOfClauseTotal);
   }