Fix SHOW TTL wildcard path scope

integration-test/src/test/java/org/apache/iotdb/db/it/auth/IoTDBSeriesPermissionIT.java

@@ -354,6 +354,74 @@ private void testReadData() {
         "test123123456");
   }
 
+  @Test
+  public void showTTLWithMultiLevelWildcardTest() throws SQLException {
+    try (Connection connection = EnvFactory.getEnv().getConnection();
+        Statement statement = connection.createStatement()) {
+      statement.execute("create user ttl_scope_user 'test123123456'");
+      statement.execute("set ttl to root.ttl_scope_a 3600000");
+      statement.execute("set ttl to root.ttl_scope_b 7200000");
+
+      try (ResultSet resultSet = statement.executeQuery("show ttl on root.ttl_scope_a.g_0.**")) {
+        Assert.assertFalse(resultSet.next());
+      }
+
+      statement.execute("set ttl to root.ttl_scope_a.g_0.** 10000");
+      String[] headers =
+          showTTLColumnHeaders.stream().map(ColumnHeader::getColumnName).toArray(String[]::new);
+      resultSetEqualTest(
+          "show ttl on root.ttl_scope_a.g_0.**",
+          headers,
+          new String[] {"root.ttl_scope_a.g_0.**,10000,"});
+
+      resultSetEqualTest(
+          "show ttl on root.*.**", headers, new String[0], "ttl_scope_user", "test123123456");
+      statement.execute("grant READ_SCHEMA on root.ttl_scope_a.** to user ttl_scope_user");
+      for (String query :
+          new String[] {"show ttl on root.*.**", "show ttl on root.ttl_*.**", "show all ttl"}) {
+        resultSetEqualTest(
+            query,
+            headers,
+            new String[] {"root.ttl_scope_a,3600000,", "root.ttl_scope_a.g_0.**,10000,"},
+            "ttl_scope_user",
+            "test123123456");
+      }
+      for (String query :
+          new String[] {"show ttl on root.*.g_*.**", "show ttl on root.ttl_*.g_0.**"}) {
+        resultSetEqualTest(
+            query,
+            headers,
+            new String[] {"root.ttl_scope_a.g_0.**,10000,"},
+            "ttl_scope_user",
+            "test123123456");
+      }
+      resultSetEqualTest(
+          "show ttl on root.ttl_scope_b.**",
+          headers,
+          new String[0],
+          "ttl_scope_user",
+          "test123123456");
+      statement.execute("revoke READ_SCHEMA on root.ttl_scope_a.** from user ttl_scope_user");
+      statement.execute("grant READ_SCHEMA on root.ttl_scope_a.g_0.** to user ttl_scope_user");
+      for (String query : new String[] {"show ttl on root.*.**", "show ttl on root.ttl_*.**"}) {
+        resultSetEqualTest(
+            query,
+            headers,
+            new String[] {"root.ttl_scope_a.g_0.**,10000,"},
+            "ttl_scope_user",
+            "test123123456");
+      }
+    } finally {
+      try (Connection connection = EnvFactory.getEnv().getConnection();
+          Statement statement = connection.createStatement()) {
+        executeQuietly(statement, "drop user ttl_scope_user");
+        executeQuietly(statement, "unset ttl from root.ttl_scope_a.g_0.**");
+        executeQuietly(statement, "unset ttl from root.ttl_scope_a");
+        executeQuietly(statement, "unset ttl from root.ttl_scope_b");
+      }
+    }
+  }
+
   @Test
   public void ttlOperationsTest() {
     try {

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

@@ -1786,13 +1786,19 @@ public SettableFuture<ConfigTaskResult> showTTL(ShowTTLStatement showTTLStatemen
           databaseToTTL.putAll(resp.getPathTTLMap());
           continue;
         }
+        PathPatternTree queryScope = new PathPatternTree();
+        queryScope.appendPathPattern(pathPattern);
+        queryScope.constructTree();
+        // Query patterns may contain wildcards before the trailing **. Only the authority
+        // scope is restricted to full paths and literal prefixes.
         for (PartialPath overlappedPathPattern :
-            authorityScope.getOverlappedPathPatterns(pathPattern)) {
+            queryScope.intersectWithFullPathPrefixTree(authorityScope).getAllPathPatterns()) {
           List<String> nodes = Arrays.asList(overlappedPathPattern.getNodes());
           TShowTTLReq req = new TShowTTLReq(nodes);
           TShowTTLResp resp = client.showTTL(req);
           databaseToTTL.putAll(resp.getPathTTLMap());
-          if (showTTLStatement.isShowAllTTL()) {
+          // TTL rules can be stored on the prefix itself as well as on prefix.**.
+          if (overlappedPathPattern.endWithMultiLevelWildcard()) {
             req.setPathPattern(nodes.subList(0, nodes.size() - 1));
             resp = client.showTTL(req);
             databaseToTTL.putAll(resp.getPathTTLMap());