Added HANDLER support for MEMORY tables

Added key and file version numbers to MEMORY tables so that we can detect if someone has changed them between HANDLER calls.


mysql-test/suite/handler/aria.result:
  Fixed result after test changes
mysql-test/suite/handler/handler.inc:
  Changed test to use combined key to ensure rows are returned in a pre-determinated order.
mysql-test/suite/handler/heap.result:
  New result
mysql-test/suite/handler/heap.test:
  Added test for HANDLER + HEAP
mysql-test/suite/handler/innodb.result:
  Fixed result after test changes
mysql-test/suite/handler/myisam.result:
  Fixed result after test changes
sql/sql_handler.cc:
  Fixed wrong parameter to ha_index_next_same()
storage/heap/ha_heap.cc:
  Abort key scan if table has changed.
  Abort table scan if table has been recreated.
storage/heap/ha_heap.h:
  Added support for HANDLER
storage/heap/hp_clear.c:
  Increase version number so that we can notice changes if using HANDLER
storage/heap/hp_delete.c:
  Increase key data version number on key changes.
storage/heap/hp_rfirst.c:
  Remember version of key data
  Give error if using read-first on hash key.
storage/heap/hp_rkey.c:
  Remember version of key data
storage/heap/hp_rlast.c:
  Remember version of key data
  Give error if using read-last on hash key.
storage/heap/hp_rnext.c:
  Fixed that we get next key from last search.
storage/heap/hp_rprev.c:
  Fixed that we get previous key from last search.
storage/heap/hp_scan.c:
  Remember version of key and file data
storage/heap/hp_update.c:
  Increase key data version number on key changes.
storage/heap/hp_write.c:
  Increase key data version number on key changes.

1 files changed, 1 insertions, 0 deletions

diff --git a/storage/heap/hp_rkey.c b/storage/heap/hp_rkey.c
index 27d1114770e..c2edf63f6f2 100644
--- a/storage/heap/hp_rkey.c
+++ b/storage/heap/hp_rkey.c
@@ -30,6 +30,7 @@ int heap_rkey(HP_INFO *info, uchar *record, int inx, const uchar *key,
   }
   info->lastinx= inx;
   info->current_record= (ulong) ~0L;		/* For heap_rrnd() */
+  info->key_version= info->s->key_version;
 
   if (keyinfo->algorithm == HA_KEY_ALG_BTREE)
   {