1 files changed, 50 insertions, 0 deletions
diff --git a/myisammrg/myrg_rlast.c b/myisammrg/myrg_rlast.c
new file mode 100644
index 00000000000..ab7aacda716
--- /dev/null
+++ b/myisammrg/myrg_rlast.c
@@ -0,0 +1,50 @@
+/* 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 last row with the same key as the previous read. */
+
+int myrg_rlast(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_PREV))
+    return my_errno;
+
+  for (table=info->open_tables ; table < info->end_table ; table++)
+  {
+    err=mi_rlast(table->table,NULL,inx);
+    info->last_used_table=table;
+
+    if (err == HA_ERR_END_OF_FILE)
+      continue;
+    if (err)
+      return err;
+
+    /* adding to queue */
+    queue_insert(&(info->by_key),(byte *)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);
+}
+