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Project "Postgres-XC".

The branch, master has been updated
       via  85a1a344492e9c8f4870d57210d79344b6d7b3a6 (commit)
      from  fd159b3983473599768ca36ed8e4b8bfa1ed1969 (commit)


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http://postgres-xc.git.sourceforge.net/git/gitweb.cgi?p=postgres-xc/postgres-xc;a=commitdiff;h=85a1a344492e9c8f4870d57210d79344b6d7b3a6

commit 85a1a344492e9c8f4870d57210d79344b6d7b3a6
Author: Ashutosh Bapat <ash...@en...>
Date:   Tue Mar 26 10:39:48 2013 +0530

    Handle subqueries in FROM clause in FQS planning.
    For every such subquery, we find out the datanodes where the query should be
    executed and type of distribution of the result (replicated/distributed) using
    the distribution information of relations participating in the query. This
    process is carried out recursively, in case the relations participating in the
    query, are in turn subqueries. If the result is distributed, we also maintain
    the list of Var nodes on which the result is distributed.
    The distribution information of result of a subquery is then treated in the same
    way as the distribution information of a table to derive the distribution
    information of the result of the whole query (of which the subqueries are part).

M	src/backend/nodes/copyfuncs.c
M	src/backend/nodes/outfuncs.c
M	src/backend/optimizer/path/pgxcpath.c
M	src/backend/optimizer/plan/pgxcplan.c
M	src/backend/optimizer/util/pgxcship.c
M	src/include/optimizer/pgxcplan.h
M	src/include/optimizer/pgxcship.h
M	src/include/pgxc/locator.h
M	src/test/regress/expected/xc_FQS.out
M	src/test/regress/expected/xc_FQS_join.out
M	src/test/regress/sql/xc_FQS.sql
M	src/test/regress/sql/xc_FQS_join.sql

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

Summary of changes:
 src/backend/nodes/copyfuncs.c             |    1 +
 src/backend/nodes/outfuncs.c              |    1 +
 src/backend/optimizer/path/pgxcpath.c     |   11 +-
 src/backend/optimizer/plan/pgxcplan.c     |   75 ++++++-
 src/backend/optimizer/util/pgxcship.c     |  351 ++++++++++++++++++-----------
 src/include/optimizer/pgxcplan.h          |    4 +-
 src/include/optimizer/pgxcship.h          |    6 +-
 src/include/pgxc/locator.h                |    7 +
 src/test/regress/expected/xc_FQS.out      |   67 ++++++
 src/test/regress/expected/xc_FQS_join.out |   94 ++++++++
 src/test/regress/sql/xc_FQS.sql           |   16 ++
 src/test/regress/sql/xc_FQS_join.sql      |   35 +++
 12 files changed, 529 insertions(+), 139 deletions(-)


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