mybitis 批量更新

1. <!-- 批量插入for Oracle -->  
   
       <insert id="insertBatch4Oracle" parameterType="List">  
   
        insert into aa  
   
          (  
   
            a,b  
   
          )  
   
             <foreach collection="list" item="item" index="index" separator="union all" >  
          
                  select  #{item.a},  
          
                      #{item.b}  
          
                      from dual  
          
                </foreach>  
          
       </insert>  
   
         
   
       <!-- 批量插入for Other -->  
   
       <insert id="insertBatch4Other" parameterType="List">  
   
           insert into aa  
   
             (  
   
               a,b  
   
             )  
   
             VALUES  
   
             <foreach collection="list" item="obj" index="index" separator="," >  
   
             (  
   
               #{obj.a},#{obj.b}  
   
             )  
   
             </foreach>  
   
       </insert>

批量更新

 <update id="batchUpdateStatus" parameterType="list">
        UPDATE PAY_CLEAR_WAITING
        <trim prefix="set" suffixOverrides=",">
            <trim prefix="status = CASE" suffix="ELSE status END,">
                <foreach item="data" collection="list">
                    WHEN INSTRUCT_ID
                    =
                    #{data.instructId} THEN
                    #{data.payClearWaitingStatus}
                </foreach>
            </trim>
            UPDATE_TIME = sysdate
        </trim>
        WHERE
        <foreach item="data" collection="list" separator="or">
            INSTRUCT_ID = #{data.instructId}
        </foreach>
    </update>