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I have some EDI messages (X12, HL7, etc …) stored in an Oracle database. I sometimes want to pull out individual fields (e.g. ISA-03). Currently, I have some really ugly sql. I’d like to create a PL/SQL package to make it easier and was wondering if anybody had already done this.
I imagine something like:
select edi.x12.extract_field( clob_column, ‘ISA’, 4) from edi_table
While I never stored the HL7 message as is in a database it should be possible.
The idea of HL7 (and XML) is that it’s a common format for systems to use to transfer information. It was never designed as a ‘storable’ item. Usually, I would pull the data out of the warehouse format into a particular HL7 message and send it to the MQHub/eGate for transmitting. On the return do the opposite extract the fields I’m warehousing and save those. I.E. HL7 should not be stored so I don’t have one.
Enough of the lecture. 🙂
I would suggest a function/procedure per segment and split the message into a temp table.
example of split in oracle