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The branch, master has been updated
       via  4634c0bf36fa7e54d16ffaf2a6c0085d4f9a3afc (commit)
      from  15f9527dc8ca91866e9b6595a3a46b2dcd822ccd (commit)


- Log -----------------------------------------------------------------
http://postgres-xc.git.sourceforge.net/git/gitweb.cgi?p=postgres-xc/postgres-xc;a=commitdiff;h=4634c0bf36fa7e54d16ffaf2a6c0085d4f9a3afc

commit 4634c0bf36fa7e54d16ffaf2a6c0085d4f9a3afc
Author: Ashutosh Bapat <ash...@en...>
Date:   Tue Mar 19 15:53:21 2013 +0530

    Ship OUTER JOINs to datanodes in following cases
    1. An equi-outer-join between the distribution columns of two distributed tables
    such that the tables are distributed on same set of nodes and distribution
    strategy is same and datatype of distribution column is same, is shippable to
    the datanodes where the distributed tables are distributed.
    2. An outer-join between a distributed and a replicated relation is
    shippable to the datanodes where distributed relation is distributed if the
    replicated relation is replicated on those nodes and the outer side of join is
    distributed relation.
    3. An outer-join between two replicated relations shippable to a datanode where
    both the relations are available.
    
    Justification for shippability can be found in mail thread with subject
    "shipping outer joins" on pgxc-hackers mailing list.

M	src/backend/optimizer/path/pgxcpath.c
M	src/backend/optimizer/util/pgxcship.c
M	src/include/optimizer/pgxcplan.h
M	src/include/optimizer/pgxcship.h
M	src/test/regress/expected/join.out
M	src/test/regress/expected/xc_FQS_join.out
M	src/test/regress/sql/xc_FQS_join.sql

-----------------------------------------------------------------------

Summary of changes:
 src/backend/optimizer/path/pgxcpath.c     |   75 +----------
 src/backend/optimizer/util/pgxcship.c     |  209 ++++++++++++++++++++-------
 src/include/optimizer/pgxcplan.h          |    2 +-
 src/include/optimizer/pgxcship.h          |    7 +-
 src/test/regress/expected/join.out        |   41 ++----
 src/test/regress/expected/xc_FQS_join.out |  223 +++++++++++++++++++++++++++++
 src/test/regress/sql/xc_FQS_join.sql      |   72 +++++++++
 7 files changed, 474 insertions(+), 155 deletions(-)


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