Robert Haas 38fc54703e Re-fix wrong costing of Sort under Gather Merge. ...

Commit dc02c7bca4dccf7de278cdc6b3325a829e75b252 changed this call
to create_sort_path() to take -1 rather than limit_tuples because,
at that time, there was no way for a Sort beneath a Gather Merge
to become a top-N sort.

Later, commit 3452dc5240da43e833118484e1e9b4894d04431c provided
a way for a Sort beneath a Gather Merge to become a top-N sort,
but failed to revert the previous commit in the process.  Do that.

Report and analysis by Jeff Janes; patch by Thomas Munro; review by
Amit Kapila and by me.

Discussion: http://postgr.es/m/CAEepm=1BWtC34vUroA0Uqjw02MaqdUrW+d6WD85_k8SLyPiKHQ@mail.gmail.com

2017-12-19 10:42:17 -05:00

..

backend

Re-fix wrong costing of Sort under Gather Merge.

2017-12-19 10:42:17 -05:00

bin

Add approximated Zipfian-distributed random generator to pgbench.

2017-12-14 14:30:22 +03:00

common

Change TRUE/FALSE to true/false

2017-11-08 11:37:28 -05:00

fe_utils

Exclude flex-generated code from coverage testing

2017-10-16 16:28:11 -04:00

include

Mark a few parallelism-related variables with PGDLLIMPORT.

2017-12-19 10:22:42 -05:00

interfaces

Add libpq connection parameter "scram_channel_binding"

2017-12-19 10:12:36 -05:00

makefiles

Always use -fPIC, not -fpic, when building shared libraries with gcc.

2017-06-01 13:32:55 -04:00

pl

Fix oversights in new plpgsql test suite infrastructure.

2017-12-16 11:32:49 -05:00

port

Rewrite strnlen replacement implementation from 8a241792f96.

2017-10-10 14:50:30 -07:00

template

Force "restrict" not to be used when compiling with xlc.

2017-10-13 12:15:06 -07:00

test

Add libpq connection parameter "scram_channel_binding"

2017-12-19 10:12:36 -05:00

timezone

Clean up assorted messiness around AllocateDir() usage.

2017-12-04 17:02:56 -05:00

tools

Add shared tuplestores.

2017-12-18 14:23:19 -08:00

tutorial

Distinguish selectivity of < from <= and > from >=.

2017-09-13 11:12:39 -04:00

.gitignore

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DEVELOPERS

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Makefile

Build src/test/isolation during "make" and "make install".

2017-11-22 20:18:15 -08:00

Makefile.global.in

Convert documentation to DocBook XML

2017-11-23 09:44:28 -05:00

Makefile.shlib

Remove support for bcc and msvc standalone libpq builds

2017-04-11 15:22:21 +02:00

nls-global.mk

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