[IOTDB-240] fix unknown time series in where clause (#443)

* fix querying non-existing paths in where clause"

server/src/main/java/org/apache/iotdb/db/metadata/MTree.java

@@ -512,8 +512,7 @@ public class MTree implements Serializable {
     MNode cur = getRoot();
     for (int i = 1; i < nodes.length; i++) {
       if (!cur.hasChild(nodes[i])) {
-        throw new PathErrorException(
-            String.format(NO_CHILD_ERROR,cur.getName(),nodes[i]));
+        throw new PathErrorException("Path: \"" + path + "\" doesn't correspond to any known time series");
       }
       cur = cur.getChild(nodes[i]);
     }

server/src/main/java/org/apache/iotdb/db/qp/strategy/optimizer/ConcatPathOptimizer.java

@@ -276,6 +276,9 @@ public class ConcatPathOptimizer implements ILogicalOptimizer {
       for (Path path : paths) {
         List<String> all;
         all = executor.getAllPaths(path.getFullPath());
+        if(all.isEmpty()){
+          throw new LogicalOptimizeException("Path: \"" + path + "\" doesn't correspond to any known time series");
+        }
         for (String subPath : all) {
           if (!pathMap.containsKey(subPath)) {
             pathMap.put(subPath, 1);
@@ -299,7 +302,7 @@ public class ConcatPathOptimizer implements ILogicalOptimizer {
       try {
         List<String> actualPaths = executor.getAllPaths(paths.get(i).getFullPath());
         if(actualPaths.isEmpty()){
-          throw new LogicalOptimizeException("Path: \"" + paths.get(i) + "\" not corresponding any known time series");
+          throw new LogicalOptimizeException("Path: \"" + paths.get(i) + "\" doesn't correspond to any known time series");
         }
         for (String actualPath : actualPaths) {
           retPaths.add(new Path(actualPath));

server/src/test/java/org/apache/iotdb/db/integration/IoTDBMultiSeriesIT.java

@@ -334,4 +334,46 @@ public class IoTDBMultiSeriesIT {
       fail(e.getMessage());
     }
   }
+
+  @Test
+  public void selectUnknownTimeSeries() throws ClassNotFoundException {
+    Class.forName(Config.JDBC_DRIVER_NAME);
+
+    try (Connection connection = DriverManager
+        .getConnection(Config.IOTDB_URL_PREFIX + "127.0.0.1:6667/", "root", "root");
+        Statement statement = connection.createStatement()) {
+      statement.execute("select s10 from root.vehicle.d0");
+      fail("not throw exception when select unknown time series");
+    } catch (SQLException e) {
+      assertEquals("Execute statement error: Path: \"root.vehicle.d0.s10\" doesn't correspond to any known time series", e.getMessage());
+    }
+  }
+
+  @Test
+  public void selectWhereUnknownTimeSeries() throws ClassNotFoundException {
+    Class.forName(Config.JDBC_DRIVER_NAME);
+
+    try (Connection connection = DriverManager
+        .getConnection(Config.IOTDB_URL_PREFIX + "127.0.0.1:6667/", "root", "root");
+        Statement statement = connection.createStatement()) {
+      statement.execute("select s1 from root.vehicle.d0 where s0 < 111 and s10 < 111");
+      fail("not throw exception when unknown time series in where clause");
+    } catch (SQLException e) {
+      assertEquals("Execute statement error: Path: \"root.vehicle.d0.s10\" doesn't correspond to any known time series", e.getMessage());
+    }
+  }
+
+  @Test
+  public void selectWhereUnknownTimeSeriesFromRoot() throws ClassNotFoundException {
+    Class.forName(Config.JDBC_DRIVER_NAME);
+
+    try (Connection connection = DriverManager
+        .getConnection(Config.IOTDB_URL_PREFIX + "127.0.0.1:6667/", "root", "root");
+        Statement statement = connection.createStatement()) {
+      statement.execute("select s1 from root.vehicle.d0 where root.vehicle.d0.s0 < 111 and root.vehicle.d0.s10 < 111");
+      fail("not throw exception when unknown time series in where clause");
+    } catch (SQLException e) {
+      assertEquals("Execute statement error: Path: \"root.vehicle.d0.s10\" doesn't correspond to any known time series", e.getMessage());
+    }
+  }
 }