Fix: Adding the time column is prohibited.

integration-test/src/test/java/org/apache/iotdb/relational/it/schema/IoTDBTableWithDefinedTimeIT.java

@@ -227,4 +227,26 @@ public void testCreateView() {
       fail(e.getMessage());
     }
   }
+
+  @Test
+  public void testAddTimeColumn() {
+    try (final Connection connection =
+            EnvFactory.getEnv().getConnection(BaseEnv.TABLE_SQL_DIALECT);
+        final Statement statement = connection.createStatement()) {
+      statement.execute("use " + TABLE_DATABASE);
+
+      try {
+        statement.execute(
+            "create table table_time(device string tag, s1 int32 field, record_time timestamp time)");
+        statement.execute("alter table table_time add column d_datetime timestamp time");
+        fail("Add the TIME column should not be supported");
+      } catch (SQLException e) {
+        assertEquals("701: Adding TIME column is not supported.", e.getMessage());
+      }
+
+    } catch (SQLException e) {
+      e.printStackTrace();
+      fail(e.getMessage());
+    }
+  }
 }

iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/TableConfigTaskVisitor.java

@@ -722,6 +722,9 @@ protected IConfigTask visitAddColumn(final AddColumn node, final MPPQueryContext
         context.getSession().getUserName(), new QualifiedObjectName(database, tableName), context);
 
     final ColumnDefinition definition = node.getColumn();
+    if (definition.getColumnCategory() == TsTableColumnCategory.TIME) {
+      throw new SemanticException("Adding TIME column is not supported.");
+    }
     return new AlterTableAddColumnTask(
         database,
         tableName,