Add extra ordered index in when UNIQUE and PRIMARY KEY are specified.

Extra ordered indexes are created primarily 
to support partial key scan/read and range scans of hash indexes.
I.e. the ordered index are used instead of the hash indexes for 
these queries.


sql/ha_ndbcluster.cc:
  Add creation and use of extra ordered indexes on pk and unique indexes.
sql/ha_ndbcluster.h:
  Added new functions for creating extra ordered indexes

1 files changed, 5 insertions, 1 deletions

diff --git a/sql/ha_ndbcluster.h b/sql/ha_ndbcluster.h
index ed66d07d79b..13466be9eb2 100644
--- a/sql/ha_ndbcluster.h
+++ b/sql/ha_ndbcluster.h
@@ -135,11 +135,14 @@ class ha_ndbcluster: public handler
  private:
   int alter_table_name(const char *from, const char *to);
   int drop_table();
-  int create_index(const char *name, KEY *key_info);
+  int create_index(const char *name, KEY *key_info, bool unique);
+  int create_ordered_index(const char *name, KEY *key_info);
+  int create_unique_index(const char *name, KEY *key_info);
   int initialize_autoincrement(const void* table);
   int get_metadata(const char* path);
   void release_metadata();
   const char* get_index_name(uint idx_no) const;
+  const char* get_unique_index_name(uint idx_no) const;
   NDB_INDEX_TYPE get_index_type(uint idx_no) const;
   NDB_INDEX_TYPE get_index_type_from_table(uint index_no) const;
   
@@ -193,6 +196,7 @@ class ha_ndbcluster: public handler
   THR_LOCK_DATA m_lock;
   NDB_SHARE *m_share;
   NDB_INDEX_TYPE  m_indextype[MAX_KEY];
+  const char*  m_unique_index_name[MAX_KEY];
   NdbRecAttr *m_value[NDB_MAX_ATTRIBUTES_IN_TABLE];
   bool m_use_write;
 };