Posted in 面试题 onJuly 13, 2013
delete from table_name where rowid not in (select max(rowid) from table_name group by duplicate_values_field_name);
或者
delete duplicate_values_field_name dv from table_name ta where rowid 或者
DELETE FROM table_name A WHERE rowid>(SELECT MIN(rowid) FROM table_name B WHERE A>key_values=B.key_values);
或者
delete duplicate_values_field_name dv from table_name ta where rowid 或者
DELETE FROM table_name A WHERE rowid>(SELECT MIN(rowid) FROM table_name B WHERE A>key_values=B.key_values);
如何删除一个表里面的重复行
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