DB_NEXT_DUP
case DB_NEXT_DUP:
f_next = DB_NEXT_DUP;
case DB_NEXT_DUP:
&jc->j_key, key, jc->j_init ? DB_CURRENT : DB_NEXT_DUP);
&jc->j_key, key, DB_NEXT_DUP)) == 0);
case DB_NEXT_DUP:
case DB_NEXT_DUP: