Bug#35111 - Truncate a MyISAM partitioned table does not reset

the auto_increment value
      
This is an alternative patch that instead of allowing RECREATE TABLE
on TRUNCATE TABLE it implements reset_auto_increment that is called
after delete_all_rows.

Note: this bug was fixed by Mattias Jonsson:
Pusing this patch: http://lists.mysql.com/commits/70370


mysql-test/suite/parts/r/partition_auto_increment_memory.result:
  Bug#35111: Truncate a MyISAM partitioned table does not reset
  the auto_increment value
mysql-test/suite/parts/r/partition_auto_increment_myisam.result:
  Bug#35111: Truncate a MyISAM partitioned table does not reset
  the auto_increment value
sql/ha_partition.cc:
  Bug#35111: Truncate a MyISAM partitioned table does not reset
  the auto_increment value
  
  Added reset_auto_increment, to be used after delete_all_rows
  to simulate truncate.
storage/heap/ha_heap.cc:
  Bug#35111: Truncate a MyISAM partitioned table does not reset
  the auto_increment value
  
  Added reset_auto_increment, to be used after delete_all_rows
  to simulate truncate
storage/heap/ha_heap.h:
  Bug#35111: Truncate a MyISAM partitioned table does not reset
  the auto_increment value
  
  Added reset_auto_increment, to be used after delete_all_rows
  to simulate truncate
storage/myisam/ha_myisam.cc:
  Bug#35111: Truncate a MyISAM partitioned table does not reset
  the auto_increment value
  
  Added reset_auto_increment, to be used after delete_all_rows
  to simulate truncate.
storage/myisam/ha_myisam.h:
  Bug#35111: Truncate a MyISAM partitioned table does not reset
  the auto_increment value
  
  Added reset_auto_increment, to be used after delete_all_rows
  to simulate truncate.

1 files changed, 5 insertions, 0 deletions

diff --git a/sql/ha_partition.cc b/sql/ha_partition.cc
index 67bc3156260..74742f58028 100644
--- a/sql/ha_partition.cc
+++ b/sql/ha_partition.cc
@@ -3179,6 +3179,7 @@ int ha_partition::delete_row(const uchar *buf)
 int ha_partition::delete_all_rows()
 {
   int error;
+  bool truncate= FALSE;
   handler **file;
   THD *thd= ha_thd();
   DBUG_ENTER("ha_partition::delete_all_rows");
@@ -3190,12 +3191,16 @@ int ha_partition::delete_all_rows()
     ha_data->next_auto_inc_val= 0;
     ha_data->auto_inc_initialized= FALSE;
     unlock_auto_increment();
+    truncate= TRUE;
   }
   file= m_file;
   do
   {
     if ((error= (*file)->ha_delete_all_rows()))
       DBUG_RETURN(error);
+    /* Ignore the error */
+    if (truncate)
+      (void) (*file)->ha_reset_auto_increment(0);
   } while (*(++file));
   DBUG_RETURN(0);
 }