wns9778.com，select * from V$NLS_PARAMETERS; SQL alter session set NLS_DATE_LANGUAGE = 'SIMPLIFIED CHINESE'; Session altered SQL Select to_char(sysdate,'yyyy-Mon-day') from dual; TO_CHAR(SYSDATE,'YYYY-MON-DAY' ------------------------------ 2009-5月 -星期三 SQL alter session set NLS_DATE_LANGUAGE='AMERICAN'; Session altered SQL Select to_char(sysdate,'yyyy-Mon-day') from dual; TO_CHAR(SYSDATE,'YYYY-MON-DAY' ------------------------------ 2009-May-wednesday SQL
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