text: /* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
  
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program; if not, write to the Free Software
     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  
  #include "mymrgdef.h"
  
  	/*  Read first row according to specific key */
  
  int myrg_rfirst(MYRG_INFO *info, byte *buf, int inx)
  {
    MYRG_TABLE *table;
    MI_INFO *mi;
    int err;
  
    if (_myrg_init_queue(info,inx,HA_READ_KEY_OR_NEXT))
      return my_errno;
  
    for (table=info->open_tables ; table != info->end_table ; table++)
    {
      if ((err=mi_rfirst(table->table,NULL,inx)))
      {
        if (err == HA_ERR_END_OF_FILE)
  	continue;
        return err;
      }
      /* adding to queue */
      queue_insert(&(info->by_key),(byte *)table);
    }
    /* We have done a read in all tables */
    info->last_used_table=table;
  
    if (!info->by_key.elements)
      return HA_ERR_END_OF_FILE;
  
    mi=(info->current_table=(MYRG_TABLE *)queue_top(&(info->by_key)))->table;
    return mi_rrnd(mi,buf,mi->lastpos);
  }
  