oracle,mysql分页

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="common">
    <sql id="Oracle_Pagination_Head">
        <if test="oracleStart!=null and oracleEnd!=null">
            <![CDATA[select y.* from(select z.*,rownum as oracleStart from (]]>
        </if>
    </sql>

    <sql id="Oracle_Pagination_Tail">
        <if test="oracleStart != null and oracleEnd != null">
            <![CDATA[ ) z where rownum <= #{oracleEnd} ) y where y.oracleStart > #{oracleStart} ]]>
        </if>
    </sql>
</mapper>

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="common">
    <sql id="MySql_Pagination_Head">

    </sql>
    <sql id="MySql_Pagination_Tail">
        <if test="limit != 0">
            <![CDATA[ limit #{start},#{limit} ]]>
        </if>
    </sql>
</mapper>