oracle去除重复数据sql?delete table1 where rowid not in ( 2select max(rowid) from table1 group by co
oracle去除重复数据sql
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delete table1 where rowid not in ( 2select max(rowid) from table1 group by col1 ,col2,col3 ) oracle去除重复数据sql
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delete table1 where rowid not in ( 2select max(rowid) from table1 group by col1 ,col2,col3 )