[chore](show) support statement to show views from table (#32358)

MySQL [test]> show views;
+----------------+
| Tables_in_test |
+----------------+
| t1_view        |
| t2_view        |
+----------------+
2 rows in set (0.00 sec)

MySQL [test]> show views like '%t1%';
+----------------+
| Tables_in_test |
+----------------+
| t1_view        |
+----------------+
1 row in set (0.01 sec)

MySQL [test]> show views where create_time > '2024-03-18';
+----------------+
| Tables_in_test |
+----------------+
| t2_view        |
+----------------+
1 row in set (0.02 sec)

fe/fe-core/src/test/java/org/apache/doris/analysis/ShowTableStmtTest.java

@@ -17,6 +17,7 @@
 
 package org.apache.doris.analysis;
 
+import org.apache.doris.catalog.TableIf.TableType;
 import org.apache.doris.common.AnalysisException;
 import org.apache.doris.mysql.privilege.AccessControllerManager;
 import org.apache.doris.mysql.privilege.MockedAuth;
@@ -68,6 +69,28 @@ public class ShowTableStmtTest {
         Assert.assertEquals("Table_type", stmt.getMetaData().getColumn(1).getName());
     }
 
+    @Test
+    public void testShowViews() throws AnalysisException {
+        ShowTableStmt stmt = new ShowTableStmt("", null, false, TableType.VIEW,
+                null, null);
+        stmt.analyze(analyzer);
+        Assert.assertEquals("SHOW VIEWS FROM internal.testDb", stmt.toString());
+        Assert.assertEquals("testDb", stmt.getDb());
+        Assert.assertEquals(TableType.VIEW, stmt.getType());
+        Assert.assertFalse(stmt.isVerbose());
+        Assert.assertEquals(1, stmt.getMetaData().getColumnCount());
+        Assert.assertEquals("Tables_in_testDb", stmt.getMetaData().getColumn(0).getName());
+
+        stmt = new ShowTableStmt("abc", null, true, TableType.VIEW, "bcd", null);
+        stmt.analyze(analyzer);
+        Assert.assertEquals("bcd", stmt.getPattern());
+        Assert.assertEquals("SHOW FULL VIEWS FROM internal.abc LIKE 'bcd'", stmt.toString());
+        Assert.assertEquals(4, stmt.getMetaData().getColumnCount());
+        Assert.assertEquals("Tables_in_abc", stmt.getMetaData().getColumn(0).getName());
+        Assert.assertEquals("Table_type", stmt.getMetaData().getColumn(1).getName());
+        Assert.assertEquals(TableType.VIEW, stmt.getType());
+    }
+
     @Test
     public void testNoDb() {
         ShowTableStmt stmt = new ShowTableStmt("", null, false, null);

fe/fe-core/src/test/java/org/apache/doris/qe/ShowExecutorTest.java

@@ -324,6 +324,16 @@ public class ShowExecutorTest {
         Assert.assertFalse(resultSet.next());
     }
 
+    @Test
+    public void testShowViews() throws AnalysisException {
+        ShowTableStmt stmt = new ShowTableStmt("testDb", null, false, TableType.VIEW,
+                null, null);
+        ShowExecutor executor = new ShowExecutor(ctx, stmt);
+        ShowResultSet resultSet = executor.execute();
+
+        Assert.assertFalse(resultSet.next());
+    }
+
     @Test
     public void testShowTableFromCatalog() throws AnalysisException {
         ShowTableStmt stmt = new ShowTableStmt("testDb", "internal", false, null);