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Project "Postgres-XC".

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       via  c461c74182e6ca61f0c13779f1a3b821e111d888 (commit)
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commit c461c74182e6ca61f0c13779f1a3b821e111d888
Author: Michael P <mi...@ot...>
Date:   Fri Jan 6 13:00:37 2012 +0900

    Support for remote DELETE planning and remove restrictions for UPDATE
    
    This adds general support for DELETE query planning in standard planner
    in case Postgres-XC planner falls back to standard planner. Now all the
    DML plans follow the same logic by adding remoteQuery nodes to plan steps
    of ModifyTable plans.
    UPDATE has its restrictions removed by adding the CTID value for tuple
    selection on remote nodes as a parameter in WHERE clause and in parameter
    list associated with extended protocol of remote query.

M	src/backend/executor/nodeModifyTable.c
M	src/backend/optimizer/plan/createplan.c

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

Summary of changes:
 src/backend/executor/nodeModifyTable.c  |   20 ++-
 src/backend/optimizer/plan/createplan.c |  333 ++++++++++--------------------
 2 files changed, 130 insertions(+), 223 deletions(-)


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Postgres-XC

Project "Postgres-XC".

The branch, master has been updated
       via  b7e0324dba613acb9c72391a511b5cd0bcc0e6f5 (commit)
      from  4934c89f160e3c174cec0c3eaef279f458811bb3 (commit)


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commit b7e0324dba613acb9c72391a511b5cd0bcc0e6f5
Author: Michael P <mi...@ot...>
Date:   Fri Jan 6 09:19:40 2012 +0900

    Support for remote UPDATE planning in standard planning
    
    This commit focuses on support of UPDATE queries using non-pushable
    expressions in SET and WHERE clauses.
    The UPDATE query is generated based on the output of the SELECT query
    generated by create_remotequery_plan to select the correct tuples to
    update remotelly with a top plan that was not generated before.
    
    Current implementation has a restriction though:
    on replicated tables all the columns cannot be updated at once if the
    query is not entirely pushable. Postgres-XC planner is in charge of
    analyzing that.
    For distributed tables, the distribution column cannot be updated
    so this restriction is not directly applied but this should be taken
    into account once a tuple relocation mechanism is added.

M	src/backend/executor/nodeModifyTable.c
M	src/backend/optimizer/plan/createplan.c
M	src/backend/pgxc/plan/planner.c
M	src/backend/pgxc/pool/execRemote.c
M	src/include/pgxc/execRemote.h
M	src/test/regress/sql/portals.sql

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

Summary of changes:
 src/backend/executor/nodeModifyTable.c  |   19 +++-
 src/backend/optimizer/plan/createplan.c |  222 ++++++++++++++++++++++++++++++-
 src/backend/pgxc/plan/planner.c         |    5 +
 src/backend/pgxc/pool/execRemote.c      |   18 ++-
 src/include/pgxc/execRemote.h           |    2 +-
 src/test/regress/sql/portals.sql        |   13 +-
 6 files changed, 260 insertions(+), 19 deletions(-)


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