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   D_KEYFREE

SUMMARY
   d_keyfree(FIELD[,dbn])
   long FIELD;
   int dbn;

ARGUMENTS
   FIELD       The field number of the key field to be freed.

   dbn         (optional) The number of the database containing the record.

DESCRIPTION
   Function d_keyfree frees the read or exclusively locked key file which
   contains occurrences of key  field FIELD.This function can only be
   executed outside of atransaction.Incide transaction,lock are freed by
   functions d_trend or d_trabort.If the key type is exclusively locked,all
   changed database pages in the cache are flushed.


CURRENCY CHANGES
   None.

RETURN CODES

   -5     S_INVFLD      Invalid field type.

   -17    S_NOTKEY      FIELD is not a key.

   -24    S_NOTLOCKED   Key type is not locked.

   -29    S_TRFREE      Attempt to free aread lock inside a
                        transaction.

EXAMPLE

    int count,stat=S_OKAY;
    ...
    /*list info record in id_code order*/
    while (stat == S_OKAY){
     d_keylock(ID_CODE,"r");
     for(count=0;count<20 &&
          (stat=d_keynext(ID_CODE))==S_OKAY;++count){
          /*hold lock for only 20 record at a time */
          if(d_recread(&irec)==S_OKAY)pr_info();
     }
     d_keyfree(ID_CODE);
    }