[TBASE-1099] fix bug referred in issue #699, refactor some codes

src/client/inc/tsclient.h

@@ -479,6 +479,7 @@ void tscProcessMultiVnodesInsertForFile(SSqlObj *pSql);
 void tscKillMetricQuery(SSqlObj *pSql);
 void tscInitResObjForLocalQuery(SSqlObj *pObj, int32_t numOfRes, int32_t rowLen);
 int32_t tscBuildResultsForEmptyRetrieval(SSqlObj *pSql);
+bool tscIsUpdateQuery(STscObj *pObj);
 
 // transfer SSqlInfo to SqlCmd struct
 int32_t tscToSQLCmd(SSqlObj *pSql, struct SSqlInfo *pInfo);

src/client/src/TSDBJNIConnector.c

@@ -289,15 +289,17 @@ JNIEXPORT jlong JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_getResultSetImp(
     return JNI_CONNECTION_NULL;
   }
 
-  int num_fields = taos_field_count(tscon);
-  if (num_fields != 0) {
-    jlong ret = (jlong)taos_use_result(tscon);
-    jniTrace("jobj:%p, taos:%p, get resultset:%p", jobj, tscon, (void *)ret);
-    return ret;
+  jlong ret = 0;
+
+  if (tscIsUpdateQuery(tscon)) {
+    ret = 0;  // for update query, no result pointer
+    jniTrace("jobj:%p, taos:%p, no result", jobj, tscon);
+  } else {
+    ret = (jlong) taos_use_result(tscon);
+    jniTrace("jobj:%p, taos:%p, get resultset:%p", jobj, tscon, (void *) ret);
   }
 
-  jniTrace("jobj:%p, taos:%p, no resultset", jobj, tscon);
-  return 0;
+  return ret;
 }
 
 JNIEXPORT jint JNICALL Java_com_taosdata_jdbc_TSDBJNIConnector_freeResultSetImp(JNIEnv *env, jobject jobj, jlong con,

src/client/src/tscAst.c

@@ -255,8 +255,7 @@ static tSQLSyntaxNode *createSyntaxTree(SSchema *pSchema, int32_t numOfCols, cha
 
   t0 = tStrGetToken(str, i, false, 0, NULL);
   if (t0.n == 0 || t0.type == TK_RP) {
-    if (pLeft->nodeType != TSQL_NODE_EXPR) {
-      // if left is not the expr, it is not a legal expr
+    if (pLeft->nodeType != TSQL_NODE_EXPR) { // if left is not the expr, it is not a legal expr
       tSQLSyntaxNodeDestroy(pLeft, NULL);
       return NULL;
     }
@@ -320,13 +319,13 @@ static tSQLSyntaxNode *createSyntaxTree(SSchema *pSchema, int32_t numOfCols, cha
     pn->colId = -1;
     return pn;
   } else {
-    int32_t optr = getBinaryExprOptr(&t0);
-    if (optr <= 0) {
+    uint8_t localOptr = getBinaryExprOptr(&t0);
+    if (localOptr <= 0) {
       pError("not support binary operator:%d", t0.type);
       return NULL;
     }
 
-    return parseRemainStr(str, pBinExpr, pSchema, optr, numOfCols, i);
+    return parseRemainStr(str, pBinExpr, pSchema, localOptr, numOfCols, i);
   }
 }
 

src/client/src/tscUtil.c

@@ -1817,3 +1817,17 @@ int16_t tscGetJoinTagColIndexByUid(SSqlCmd* pCmd, uint64_t uid) {
     return pTagCond->joinInfo.right.tagCol;
   }
 }
+
+bool tscIsUpdateQuery(STscObj* pObj) {
+  if (pObj == NULL || pObj->signature != pObj) {
+    globalCode = TSDB_CODE_DISCONNECTED;
+    return TSDB_CODE_DISCONNECTED;
+  }
+
+  SSqlCmd* pCmd = &(pObj->pSql->cmd);
+  if (pCmd->command >= TSDB_SQL_INSERT && pCmd->command <= TSDB_SQL_DROP_DNODE) {
+    return 1;
+  }
+
+  return 0;
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBJNIConnector.java

@@ -134,7 +134,7 @@ public class TSDBJNIConnector {
             }
         }
 
-        // Try retrieving result set for the executed SQLusing the current connection pointer. If the executed
+        // Try retrieving result set for the executed SQL using the current connection pointer. If the executed
         // SQL is a DML/DDL which doesn't return a result set, then taosResultSetPointer should be 0L. Otherwise,
         // taosResultSetPointer should be a non-zero value.
         taosResultSetPointer = this.getResultSetImp(this.taos);

src/inc/taos.h

@@ -122,9 +122,6 @@ void taos_close_stream(TAOS_STREAM *tstr);
 
 int taos_load_table_info(TAOS *taos, const char* tableNameList);
 
-// TODO: `configDir` should not be declared here
-extern char configDir[];  // the path to global configuration
-
 #ifdef __cplusplus
 }
 #endif

src/inc/tutil.h

@@ -89,7 +89,7 @@ extern "C" {
     } else {                     \
       return (x) < (y) ? -1 : 1; \
     }                            \
-  } while (0);
+  } while (0)
 
 #define GET_INT8_VAL(x)   (*(int8_t *)(x))
 #define GET_INT16_VAL(x)  (*(int16_t *)(x))

src/system/detail/src/mgmtShell.c

@@ -1140,7 +1140,7 @@ int mgmtProcessConnectMsg(char *pMsg, int msgLen, SConnObj *pConn) {
   SAcctObj *   pAcct = NULL;
   SUserObj *   pUser = NULL;
   SDbObj *     pDb = NULL;
-  char         dbName[TSDB_METER_ID_LEN];
+  char         dbName[256] = {0};
 
   pConnectMsg = (SConnectMsg *)pMsg;
 
@@ -1158,7 +1158,6 @@ int mgmtProcessConnectMsg(char *pMsg, int msgLen, SConnObj *pConn) {
   pAcct = mgmtGetAcct(pUser->acct);
 
   if (pConnectMsg->db[0]) {
-    memset(dbName, 0, sizeof(dbName));
     sprintf(dbName, "%x%s%s", pAcct->acctId, TS_PATH_DELIMITER, pConnectMsg->db);
     pDb = mgmtGetDb(dbName);
     if (pDb == NULL) {