Oracle动态创建用于更新分区表的脚本

Question

I have a range partitioned Oracle table which I want to update using partition key.

Is there a way to dynamically create update script which takes into account partition key as follows, WITHOUT having to manually maintain such script

  update table where date between 'a' and 'b'

  update table where date between 'b' and 'c'.

Answer 1

I think it would not be necessary to specify the range in the where clause to update individual partitions. You may use the partition_extension_clause of update dynamically.

BEGIN
     FOR r IN (
          SELECT partition_name
          FROM user_tab_partitions
          WHERE table_name = 'YOUR_TABLE'
     ) LOOP

    EXECUTE IMMEDIATE 'UPDATE YOUR_TABLE (' || r.partition_name || ')  SET somecol = somevalue where someother_clause';

      COMMIT; --if it's necessary
     END LOOP;
END;
/