Use over partition in subquery : Over « Analytical Functions « Oracle PL / SQL

Use over partition in subquery

  

SQL> create table myTable
  2  as
  3  select rownum id, a.*
  4    from all_objects a
  5   where 1=0
  6  /

Table created.

SQL>
SQL>
SQL> select owner, last_ddl_time, object_name, object_type
  2  from ( select myTable1.*,max(last_ddl_time) over (partition by owner) max_time from myTable myTable1)
  3  where last_ddl_time = max_time
  4  /

no rows selected

SQL>
SQL>
SQL> drop table myTable;

Table dropped.

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