用來比較兩個字符串從第幾個位置開始不相同
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SQLOracle 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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