Table has no index order set (Error 26)

The records in the table have no order.

• An index for the table file was not selected when an UPDATE command using the RANDOM clause was encountered.

  Select an index for the table file.

• A FIND or SEEK was attempted against a table with no index ordering.

  Use SET ORDER TO to specify an index order.

• SET RELATION was issued with a non-numeric expression.

  Provide a numeric expression.