oracle设置mybatis自动生成id插入方式

insert into table_name (ID, name, sex)  
values (sequence_name.NEXTVAL,'张三','男')  

SELECT * from user_sequences

CREATE sequence sequence_name
increment by 1 //以1倍的速度增长，你也可以设置其他数字
start with 1    //从id=1开始增长  
 maxvalue 9999  //最大值为9999，根据情况  
 minvalue 1     //最小值1  
 nocycle        //不循环，也就是一直增长         
 cache 20       //设置缓存cache个序列，如果系统down掉了或者其它情况将会导致序列不连续，也可以设置为---------NOCACHE  
noorder;

<insert id="insertAccessLog" parameterType="com.example.AccessLog">
        <selectKey keyProperty="id" resultType="java.lang.Integer" order="BEFORE">
            SELECT YOUR_SEQUENCE_NAME.NEXTVAL FROM DUAL
        </selectKey>
        INSERT INTO your_table_name (ID, name，sex)
        VALUES (#{id}, #{name}, #{sex})
    </insert>

INSERT INTO your_table_name (ID, name，sex)
        VALUES (your_sequence_name, #{name}, #{sex})

insert into PERMANENT_ACCESS_USER (EMPLOYEE_USERACCOUNT,EMPLOYEE_NAME)
            values 
<foreach collection="list" item="item" separator="," close=";">
(#{item.userAccounts},#{item.empName})
</foreach>

insert all
        <foreach collection="list" item="item" separator=" ">
            into table_name (name,sex) values ( #{item.name},#{item.sex})
        </foreach>
        SELECT * FROM DUAL

useGeneratedKeys="false"

<insert id="insertPermanentUser" parameterType="list" useGeneratedKeys="false">
        INSERT INTO PERMANENT_ACCESS_USER(id, name, sex)
        SELECT id, name, sex FROM
        <foreach collection="list" item="item" separator=" union all " open="(" close=")">
            SELECT dbms_random.VALUE(0,10000000) as id,#{item.name} as name,#{item.sex} as sex from dual
        </foreach>
    </insert>

SELECT sys_guid() FROM aTable a ;

-- 用大写或者小写函数都能解决 ： 因为大小写会把raw串自动转换为十六进制
select lower(sys_guid()) from aTable a;
-- 或者 
select upper(sys_guid()) from aTable a;
-- 个人推荐这种：因为它不把值转换成大小写
-- rawtohex函数： 将raw串转换为十六进制
select rawtohex(sys_guid()) from aTable a;
-- 还有
select lower(rawtohex(sys_guid())) from aTable a;