To create a random table

Question

Hi,
I want to create a random table of 100 records from a table of 20000 records, can anybody let me knwo how can i perform this task.
Best Regards,

Answer 1

Hi,
Please go the following link
fastest way to grab 500 random numbers?
There is a good example .
SELECT yourcolumn FROM
SELECT yourcolumn FROM yourtable
ORDER BY DBMS_RANDOM.VALUE
) WHERE ROWNUM <= # of random values desired;
For example to get 10 random object ids from dba_objects:
SELECT da.object_id, da.object_name
FROM dba_objects da,
(SELECT object_id FROM
SELECT object_id FROM dba_objects
ORDER BY DBMS_RANDOM.VALUE
) WHERE ROWNUM < 11
) iv
WHERE da.object_id = iv.object_id;
Thanks