Questions Related to databases

Multiple choice technology databases
  1. delete from table_name where rowid not in (select max(rowid) from table group by duplicate_values_field_name);

  2. delete duplicate_values_field_name dv from table_name ta where rowid <(select min(rowid) from table_name tb where ta.dv=tb.dv);

  3. delete ename from emp a where rowid < ( select min(rowid) from emp b where a.ename = b.ename);

  4. Delete all

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A,B,C Correct answer