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spool d:\deletetb.sql;
select 'delete ' || table_name || ' where to_char(col,'||'''yyyy'''||')='||'''2007'''||';'
  from user_tables
where table_name in  (select 'HS_' || lpad(rownum, '2', '0')
          from dual
        connect by rownum < 100);
spool off;
==================================================================================
--ÀàËÆÈçÏÂ
PHP code:
begin
  for x in (select * from user_objects where object_name like 'HS_%') loop
     execute immediate 'delete from '||x.object_name||' where substr(apl_date,0,4)=''2007''';
  end loop;
end;
where object_name like 'HS_%' => where object_name like 'HS\_%' escape '\'  


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row_number() over(partition by ... order by ...)
RANK
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±¾ÎÄÀ´×Ôhttp://www.cnblogs.com/rootq/articles/1177562.html
Oracle Êý¾Ý¿âµÄ°ó¶¨±äÁ¿ÌØÐÔ¼°Ó¦ÓÃ
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°ó¶¨±äÁ¿(binding variable),¹²Ïí³Ø(shared buffer pool), SGA(system global area);
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Using Oracle Trace Analyzer (trcanlzr.sql)


Using Oracle Trace Analyzer (trcanlzr.sql)
Dave Moore:  Author of Oracle Utilities
Oracle has provided another utility initially designed for performance tuning Oracle Applications.  Trace Analyzer is provided in the form of a PL/SQL package (TRCA$ ).  The Trace Analyzer utility i ......
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