一、显示中文星期天
select to_char(sysdate,'day','NLS_DATE_LANGUAGE=''SIMPLIFIED CHINESE''') from dual;
二、显示英文星期天
select to_char(sysdate,'day','nls_date_language=american') from dual;
三、显示中文月份
select to_char(sysdate,'month','NLS_DATE_LANGUAGE=''SIMPLIFIED CHINESE''') from dual;
四、显示英文月份
select to_char(sysdate,'month','nls_date_language=american') from dual;