diff --git a/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseDatabaseOperations.java b/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseDatabaseOperations.java
index db8d4f24d12..04153cb20a4 100644
--- a/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseDatabaseOperations.java
+++ b/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseDatabaseOperations.java
@@ -27,7 +27,6 @@
 import java.util.List;
 import java.util.Set;
 import org.apache.gravitino.catalog.jdbc.operation.JdbcDatabaseOperations;
-import org.apache.gravitino.exceptions.NoSuchSchemaException;
 
 /** Database operations for ClickHouse. */
 public class ClickHouseDatabaseOperations extends JdbcDatabaseOperations {
@@ -42,18 +41,6 @@ protected Set<String> createSysDatabaseNameSet() {
     return ImmutableSet.of("information_schema", "INFORMATION_SCHEMA", "default", "system");
   }
 
-  @Override
-  public boolean delete(String databaseName, boolean cascade) {
-    LOG.info("Beginning to drop database {}", databaseName);
-    try {
-      dropDatabase(databaseName, cascade);
-      LOG.info("Finished dropping database {}", databaseName);
-    } catch (NoSuchSchemaException e) {
-      return false;
-    }
-    return true;
-  }
-
   @Override
   public List<String> listDatabases() {
     List<String> databaseNames = new ArrayList<>();
@@ -62,13 +49,12 @@ public List<String> listDatabases() {
       // causing the following statement to error,
       // so here we manually set a system catalog
       connection.setCatalog(createSysDatabaseNameSet().iterator().next());
-      try (Statement statement = connection.createStatement()) {
-        try (ResultSet resultSet = statement.executeQuery("SHOW DATABASES")) {
-          while (resultSet.next()) {
-            String databaseName = resultSet.getString(1);
-            if (!isSystemDatabase(databaseName)) {
-              databaseNames.add(databaseName);
-            }
+      try (Statement statement = connection.createStatement();
+          ResultSet resultSet = statement.executeQuery("SHOW DATABASES")) {
+        while (resultSet.next()) {
+          String databaseName = resultSet.getString(1);
+          if (!isSystemDatabase(databaseName)) {
+            databaseNames.add(databaseName);
           }
         }
       }
diff --git a/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseTableOperations.java b/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseTableOperations.java
index f01f85940c3..0571f3339b8 100644
--- a/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseTableOperations.java
+++ b/catalogs/catalog-jdbc-clickhouse/src/main/java/org/apache/gravitino/catalog/clickhouse/operation/ClickHouseTableOperations.java
@@ -562,7 +562,7 @@ private String addColumnFieldDefinition(TableChange.AddColumn addColumn) {
           .append(SPACE);
     }
 
-    //Append comment if available after default value
+    // Append comment if available after default value
     if (StringUtils.isNotEmpty(addColumn.getComment())) {
       columnDefinition.append("COMMENT '").append(addColumn.getComment()).append("' ");
     }
@@ -695,13 +695,13 @@ private String updateColumnTypeFieldDefinition(
 
   private StringBuilder appendColumnDefinition(JdbcColumn column, StringBuilder sqlBuilder) {
     // Add Nullable data type
-    String dataType=typeConverter.fromGravitino(column.dataType());
+    String dataType = typeConverter.fromGravitino(column.dataType());
     if (column.nullable()) {
       sqlBuilder.append(SPACE).append("Nullable(").append(dataType).append(")").append(SPACE);
     } else {
       sqlBuilder.append(SPACE).append(dataType).append(SPACE);
     }
-    
+
     // ck no support alter table with set nullable
 
     // Add DEFAULT value if specified
@@ -713,9 +713,9 @@ private StringBuilder appendColumnDefinition(JdbcColumn column, StringBuilder sq
     }
 
     // Add column auto_increment if specified
-//    if (column.autoIncrement()) {
-//      sqlBuilder.append(CLICKHOUSE_AUTO_INCREMENT).append(" ");
-//    }
+    //    if (column.autoIncrement()) {
+    //      sqlBuilder.append(CLICKHOUSE_AUTO_INCREMENT).append(" ");
+    //    }
 
     // Add column comment if specified
     if (StringUtils.isNotEmpty(column.comment())) {