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How To: Add a field containing a unique value for each record

Summary

Steps to add a unique values field to a table.

Procedure

  1. Click Table > Start Editing.

    Note:
    ArcView cannot edit Delimited Text tables. You must convert Delimited Text tables to the dBase or INFO format. See Related Information below.

  2. Click Edit > Add Field.
  3. Type Unique_ID in the Name text box on the Field Definition dialog box.
  4. Select Number under the Type dropdown list.
  5. Type 10 in the Width text box.
  6. Type 0 (zero) in the Decimal Places text box.
  7. Click OK.
  8. Click Field > Calculate.
  9. Type rec in the large text box at the bottom of the Field Calculator.
    Field Calculator

    [O-Image] Field Calculator
  10. Click OK.
  11. Click Table > Stop Editing.
  12. Click Yes when asked to save edits.

Related Information