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用來比較兩個字符串從第幾個位置開始不相同

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Release： 2016-06-07 14:54:47
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适用於Oracle資料庫的SQL Oracle SQL 字符串 select min(level) from dual where nvl(substr('字串1',level,1),' ')nvl(substr('字串2',level,1),' ') connect by level=200

适用於Oracle資料庫的SQL
Oracle SQL 字符串 
select min(level) 
  from dual 
 where nvl(substr('字串1',level,1),' ')<>nvl(substr('字串2',level,1),' ') 
connect by level<=200
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