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For batch files containing 001 fields with a bare OCLC number or that has no useable 001, but does have 035 with OCLC numbers (OCoLC), and if we have access to OCLC Connexion, when working on batch files.
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1-MarcEdit
Clean up:
Delete any incorrect 001 fields (or 001s without prefixes) using Add/Delete Field
Why we need a special workflow (we want the 001 to match any duplicate OCLC records for Government Documents already in our library catalog, and the OCLC method of applying prefixes is a weird artifact of history based on number of digits.
OCLC 001 number prefixes vary according to length
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of numbers.
The OCLC control number numbers in field 001 is are prefixed by ocm, ocn, or on. | OCLC numbers 1 through 99999999:
OCLC numbers 100000000 and higher:
OCLC numbers 1000000000 and higher:
| ocm00012345ocm00012345 ocn123456789ocn123456789 on1345345345on1345345345 |
2-Do a Find All on 035 fields
While the Find all: screen is open,
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Find the copy icon in the lower left side and click on it.
3-Excel
And Open a blank worksheet in Excel and paste the copied find all all text
Clean up the text to just the OCLC number with the search index of an asterix in front of it.
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:
To get rid of the obsolete $z numbers; Data tab; Text to columns; Delimitted; Other: $
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Then do Find; Replace what: a(OCoLC) -- Replace with: * to get rid of the rest of the remaining non-number text in the subfield a number column (and to append the OCLC number search key)
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Copy the entire cleaned up column of OCLC
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numbers:
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Open Notepad and paste the column in
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Save it with an easy to find name like: OCLCnosforPrefixes1
4-CONNEXION
Batch; Enter bibliographic search keys
Import; then find browse to the text file
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; if all goes well it will load the numbers:
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Save the Search keys: and Close
If you have an empty Local Save File, go on to next step, otherwise; if not, stop and create one/or empty one in the save file using Local File Manager
Batch; Process Batch:
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Select Find your Save file
Select [x] Online Searches only; OK
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This will take a few minutes (or longer)
When OCLC finishes, a summary screen will come up with the results:
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Do an F3; then hit the Return key to search all of the local save file; select the first bib; scroll to the end and Ctrl-Shift-Click to select the entire file of records
Might …And, might as well go ahead and & set our Holdings; Update Holdings at this point
Export all those marked recordsand give it an easy to find name like: OCLCforGPOpilot001s or similar
It File will have the suffix of .dat
MarcEdit
If you do run the MarcBreaker on it, you will see the those lovely prefixed and zero padded 001s:
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Close MarcEditor
5-In MarcEdit’s menu screen, do Tools; Merge Records
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The record identifier must be 035$a
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Source file: the OCLC records with their proper 001 fields
Merge file: the GPO pilot project records (with deleted 001s)
Save file: the new merged file name
Next=>
Select the 001 field only; click arrow to send to Merge Fields
Next=>
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Click Edit records
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Would you look at that: It works!