Populate a field in Forms with a blob

I am trying to populate a field in Forms using a blob from an Oracle database. When we try to run the query to reference the field we get an error that states this cannot be done in this context. Is there a way to accomplish this.
Thank you.

You would have to preform the calculation within the sql query. Here is an example of a computed field in a query:
SELECT HOURS,
       PAY_RATE,
       PAY_RATE * HOURS "CALCULATED_FIELD"
  FROM EMPCheers,
Tyson Jouglet

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