nlssort排序

ALTER SESSION SET NLS_SORT=''; 排序影响整个会话

Oracle9i之前，中文是按照二进制编码进行排序的。

  　　在oracle9i中新增了按照拼音、部首、笔画排序功能。设置NLS_SORT值

  　　SCHINESE_RADICAL_M   按照部首（第一顺序）、笔划（第二顺序）排序

  　　SCHINESE_STROKE_M   按照笔划（第一顺序）、部首（第二顺序）排序

  　　SCHINESE_PINYIN_M   按照拼音排序

oracle9i中新增了按照拼音、部首、笔画排序功能

拼音 SELECT * FROM TEAM ORDER BY NLSSORT(列名,'NLS_SORT = SCHINESE_PINYIN_M')

笔划 SELECT * FROM TEAM ORDER BY NLSSORT(列名,'NLS_SORT = SCHINESE_STROKE_M')

部首 SELECT * FROM TEAM ORDER BY NLSSORT(列名,'NLS_SORT = SCHINESE_RADICAL_M')

忽略大小写：SELECT * FROM TEAM ORDER BY NLSSORT(列名,'NLS_SORT =BINARY_CI') 

1、设置NLS_SORT参数值

      SCHINESE_RADICAL_M 按照部首（第一顺序）、笔划（第二顺序）排序

      SCHINESE_STROKE_M 按照笔划（第一顺序）、部首（第二顺序）排序

      SCHINESE_PINYIN_M 按照拼音排序

2、Session级别的设置，修改ORACLE字段的默认排序方式：

      按拼音：alter session set nls_sort = SCHINESE_PINYIN_M;

      按笔画：alter session set nls_sort = SCHINESE_STROKE_M;

      按偏旁：alter session set nls_sort = NLS_SORT=SCHINESE_RADICAL_M；

3、语句级别设置排序方式：

      按照笔划排序 select * from dept order by nlssort(name,'NLS_SORT=SCHINESE_STROKE_M');

      按照部首排序 select * from dept order by nlssort(name,'NLS_SORT=SCHINESE_RADICAL_M');

      按照拼音排序，此为系统的默认排序方式

      select * from dept order by nlssort(name,'NLS_SORT=SCHINESE_PINYIN_M');

4、修改系统参数（数据库所在操作系统）：

      set NLS_SORT=SCHINESE_RADICAL_M ;

       export NLS_SORT （sh）

       setenv NLS_SORT SCHINESE_RADICAL_M (csh)

      HKLC\SOFTWARE\ORACLE\home0\NLS_SORT (win注册表) 

     <select id="EquipmentList" parameterType="java.util.HashMap" resultMap="resultSimDevInfoMap">

         select * from

         (

             select A.*,rownum RN from

             (

               SELECT t.dev_id,t.dev_name,t.mac_addr,t.org_id,get_org_name(t.org_id) org_name FROM bsec_dev_info t

               <where>

                t.IS_ENABLED=1 and t.IS_DELETED = 0

                and t.org_id in (SELECT ORG_ID FROM SYS_ORG  START WITH ORG_ID = (select t.org_id from SYS_USER t where t.user_id=#{userId,jdbcType=NUMERIC}) CONNECT BY PARENT_ID = PRIOR ORG_ID )

                   <if test="devName !='' and devName !=null">

                       and t.dev_name like '%'||#{devName,jdbcType=VARCHAR}||'%'

                   </if>

               </where>

                order by NLSSORT(t.dev_name,'NLS_SORT = SCHINESE_PINYIN_M')

                 ) A

         )

         where RN between #{pagination.startIndex} and #{pagination.endIndex}

     </select>