<insert id="batchSave" >
        insert into table_name (`name`,age)	values
        <foreach collection="list" index="index" item="item" open="(" separator="," close=")">
            #{item.name, jdbcType=VARCHAR},
            #{item.age, jdbcType=INTEGER}
        </foreach>
    </insert>

<update id="updateNameBatch">
        update user
        <trim prefix="set" suffixOverrides=",">
            <trim prefix="name =case" suffix="end,">
                <foreach collection="list" item="i" index="index">
                    when id=#{i.id} then #{i.name}
                </foreach>
            </trim>
            gmt_modify = now()
        </trim>
        where
        <foreach collection="list" item="i" index="index" separator="or">
            (id=#{i.id})
        </foreach>
    </update>