查詢當前字符集
select property_value,property_name from database_properties where property_name like ‘%CHARACTERSET
SYS@ sky2>show parameter nls
指定地域範圍影響貨幣顯示
alter session set nls_territory=china;
alter session set nls_territory=america;
select to_char(sal,’L9,000.00’) sal from scott.emp where deptno = 10;
指定日期顯示方式
alter session set nls_date_language=american;
select sysdate from dual;
select to_char(sysdate,’yyyy.mm.dd hh24:mi:ss’,’nls_date_language=american’) from dual;
排序
select * from scott.upsort order by nlssort(t,’nls_sort=schinese_radical_m’);