viewing BLOB

Is there any way to know if you have data in a BLOB field?
I can't visualize the field with my SQL* Plus worksheet,but maybe I can guess just if I have data or not in it...
Thanks

Quote:

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Originally posted by jamoji
Is there any way to know if you have data in a BLOB field?
I can't visualize the field with my SQL* Plus worksheet,but maybe I can guess just if I have data or not in it...
Thanks

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Yes. Assume that your table is calle BLOB_TABLE and the BLOB column is called PHOTO.

Run:

Code:

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select DBMS_LOB.GETLENGTH(PHOTO) from BLOB_TABLE;

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If there is data, then the integer returned will be a big number.

Muchas gracias Julian!