Library /sys$common/syshlp/SQL$HELP72.HLB  —  Errors  SQL_ERRORS, BADQUALJOI
  A qualified joined table requires NATURAL or an ON or USING
  clause

  Explanation:  The ON or USING clause was not specified for a
  qualified join.  One of these clauses is required.

  User Action:  Specify the ON or USING clause.
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