presto-hive/src/main/java/io/prestosql/plugin/hive/security/SqlStandardAccessControl.java/SqlStandardAccessControl/checkCanDropColumn
class SqlStandardAccessControl:    @Override
    public void checkCanDropColumn(ConnectorSecurityContext context, SchemaTableName tableName)
    {
        if (!isTableOwner(context, tableName)) {
            denyDropColumn(tableName.toString());
        }
    }