<sqlMap>
    <sql id="get_tags_group">
        SELECT
            sys_tag_group.*,
            CONCAT('[',GROUP_CONCAT(CONCAT('{"id":"',sys_tag.id,'","name":"',sys_tag.name,'"}')),']') tags
        FROM
            sys_tag_group
        LEFT JOIN
            sys_tag
        ON sys_tag.group_id = sys_tag_group.id
        WHERE
            sys_tag_group.del_flag = 0
            and sys_tag.del_flag = 0
            and sys_tag_group.code = ?
            group by sys_tag_group.id
    </sql>
</sqlMap>