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[oracle@GISDB ~]$ sqlplus /nolog
SQL*Plus: Release 10.2.0.4.0 - Production on Tue Oct 13 11:03:03 2009
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
SQL> conn /as sysdba
Connected to an idle instance.
SQL> startup
ORACLE instance started.
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¡¡¡¡select * from perexl order by nlssort(danwei,'NLS_SORT=SCHINESE_STROKE_M');
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¡¡¡¡select * from perexl order by nlssort(danwei,'NLS_SORT=SCHINESE_RADICAL_M');
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¡¡¡¡TO_CHA
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¡¡¡¡SQL> select to_char(add_months(to_date(199912,yyyymm),-2),yyyymm) from dual;
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¡¡¡¡199910
¡¡¡¡37.LAST_DAY
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