Horton

Re: [HACKERS] Runtime Partition Pruning

David Rowley <david.rowley@2ndquadrant.com>

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From: David Rowley <david.rowley@2ndquadrant.com>
To: Beena Emerson <memissemerson@gmail.com>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>, Robert Haas <robertmhaas@gmail.com>, amul sul <sulamul@gmail.com>, "pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>, Dilip Kumar <dilipbalaut@gmail.com>
Date: 2017-12-21T14:28:53Z
Lists: pgsql-hackers 
On 22 December 2017 at 03:02, Beena Emerson <memissemerson@gmail.com> wrote:
> postgres=# create table ta (a int not null) partition by list (a);
> CREATE TABLE
> postgres=# create table ta1 partition of ta for values in(1,2);
> CREATE TABLE
> postgres=# create table ta2 partition of ta for values in(3,4);
> CREATE TABLE
> postgres=# explain select * from ta where a <> 1 and a <> 2;
> server closed the connection unexpectedly
> This probably means the server terminated abnormally
> before or while processing the request.
> The connection to the server was lost. Attempting reset: Failed.

I just get "ERROR:  negative bitmapset member not allowed" here. I
reported that one to Amit over on the other thread. Not sure why
you're getting a crash. Can you get a backtrace?


-- 
 David Rowley                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

Commits

  1. Initialize ExprStates once in run-time partition pruning

  2. Add bms_prev_member function

  3. Support partition pruning at execution time

  4. Document partprune.c a little better

  5. Fix crash in pg_replication_slot_advance

  6. Add parallel-aware hash joins.

  7. Fix typo.

  8. Allow --with-bonjour to work with non-macOS implementations of Bonjour.

  9. Mention need for --no-inc-recursive in rsync command