Created by Laurynas Biveinis and last modified
Get this branch:
bzr branch lp:~laurynas-biveinis/percona-server/tokudb-clustering-query-opt
Only Laurynas Biveinis can upload to this branch. If you are Laurynas Biveinis please log in for upload directions.

Branch merges

Related bugs

Related blueprints

Branch information

Recent revisions

569. By Laurynas Biveinis

Add secondary clustering key support to selected places in the query optimizer,

- Declare new index flag HA_CLUSTERED_INDEX, which a storage engine is
  supposed to return in index_flags() for any secondary clustered

- Make find_shortest_key() not to prefer the primary over a secondary
  key indexing all table columns if the secondary key is clustering.

- Modify Optimize_table_order::best_access_path() to treat secondary
  clustering keys as covering keys (no row read required) for access
  time estimates.

- In make_join_readinfo(), consider secondary clustering keys for the
  join if no suitable covering keys and before resorting to table

- In test_if_skip_sort_order(), skip sorting for secondary clustered
  keys too.

- In test_if_cheaper_ordering(), treat secondary clustered keys as
  covering keys.

568. By Laurynas Biveinis

Automerge prerequisite branch

Branch metadata

Branch format:
Branch format 7
Repository format:
Bazaar repository format 2a (needs bzr 1.16 or later)
Stacked on:
This branch contains Public information 
Everyone can see this information.