Recipe 1.10. Returning n Random Records
select *
from (
select ename, job
from emp
order by dbms_random.value()
)
where rownum <= 5
from (
select ename, job
from emp
order by dbms_random.value()
)
where rownum <= 5
來自 “ ITPUB部落格 ” ，連結：http://blog.itpub.net/23895263/viewspace-680977/，如需轉載，請註明出處，否則將追究法律責任。
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