Find the size of a blob in a table

Hi,
I have a table with a blob type column,
How to find the size of the blob in one specific row ?
Can it be done through a Select query ?
Thanks.

Dear A-K!
Please have a look at the following example:
conn pm/pm
desc print_media
SELECT dbms_lob.getlength(ad_photo)
FROM print_media;this example is from [http://www.psoug.org/reference/dbms_lob.html].
Yours sincerely
Florian W.

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