How to get a list of dates given a range

Hi,
I need to get the list of the dates from today. i.e, the list of last 30 days from today. What is the query to fetch the list of date values? I know to get the current date using sysdate function in oracle, but to fetch the list of 30 days from current date like20-07-2011,19-07-2011,18-07-2011,17-0702011......
Please help me to get the list of dates..
Regards,
Pradeep
Edited by: 873670 on Jul 20, 2011 4:03 AM

One way to do it....
SELECT
    SYSDATE - (ROWNUM - 1)
FROM
    dual
CONNECT BY
    level <= 30

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