doc PG 17 relnotes: adjust "builtin" collation provider

Reported-by: Daniel Verite

Discussion: https://postgr.es/m/13447ff6-15fd-4137-8339-f4fddda7eb11@manitou-mail.org

Backpatch-through: master

doc/src/sgml/release-17.sgml

@@ -6,7 +6,7 @@
 
   <formalpara>
    <title>Release date:</title>
-   <para>2024-??-??, AS OF 2024-05-14</para>
+   <para>2024-??-??, AS OF 2024-05-18</para>
   </formalpara>
 
   <sect2 id="release-17-highlights">
@@ -480,17 +480,6 @@ Author: Tomas Vondra <tomas.vondra@postgresql.org>
 <para>
 Allow BRIN indexes to be created using parallel workers (Tomas Vondra, Matthias van de Meent)
 </para>
-</listitem>
-
-<!--
-Author: Peter Eisentraut <peter@eisentraut.org>
-2024-01-19 [6db4598fc] Add stratnum GiST support function
--->
-
-<listitem>
-<para>
-Add stratnum GiST support function (Paul A. Jungwirth)
-</para>
 </listitem>
 
      </itemizedlist>
@@ -530,11 +519,12 @@ Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
 
 <listitem>
 <para>
-Allow vacuum to more efficiently store tuple references and remove its memory limit (Masahiko Sawada, John Naylor)
+Allow vacuum to more efficiently store tuple references (Masahiko Sawada, John Naylor)
 </para>
 
 <para>
-Specifically, maintenance_work_mem and autovacuum_work_mem can now be configured to use more than one gigabyte of memory.  WAL traffic caused by vacuum is also more compact.
+Additionally, vacuum is no longer silently limited to one gigabyte of memory when maintenance_work_mem and autovacuum_work_mem are higher. WAL traffic caused by
+vacuum is also more compact.
 </para>
 </listitem>
 
@@ -896,11 +886,11 @@ Author: Jeff Davis <jdavis@postgresql.org>
 
 <listitem>
 <para>
-Create a "builtin" collation provider similar to libc's C locale (Jeff Davis)
+Create "builtin" collation provider similar to libc's C locale (Jeff Davis)
 </para>
 
 <para>
-It uses a "C" locale which is identical but independent of libc, but it allows the use of non-"C" collations like "en_US" and "C.UTF-8" with the "C" locale, which libc does not.  MORE?
+While its C locale is similar but independent of libc, its C.UTF-8 locale sorts by Unicode code points and has Unicode-based case folding.
 </para>
 </listitem>
 
@@ -1466,34 +1456,6 @@ Add DEFAULT setting for ALTER TABLE .. SET ACCESS METHOD (Michael Paquier)
 </para>
 </listitem>
 
-<!--
-Author: Peter Eisentraut <peter@eisentraut.org>
-2024-03-24 [34768ee36] Add temporal FOREIGN KEY contraints
--->
-
-<listitem>
-<para>
-Allow foreign keys to reference WITHOUT OVERLAPS primary keys (Paul A. Jungwirth)
-</para>
-
-<para>
-The keyword PERIOD is used for this purpose.
-</para>
-</listitem>
-
-<!--
-Author: Peter Eisentraut <peter@eisentraut.org>
-2024-01-24 [46a0cd4ce] Add temporal PRIMARY KEY and UNIQUE constraints
-Author: Peter Eisentraut <peter@eisentraut.org>
-2024-03-05 [030e10ff1] Rename pg_constraint.conwithoutoverlaps to conperiod
--->
-
-<listitem>
-<para>
-Allow PRIMARY KEY and UNIQUE constraints to use WITHOUT OVERLAPS for non-overlapping exclusion constraints (Paul A. Jungwirth)
-</para>
-</listitem>
-
 <!--
 Author: Alexander Korotkov <akorotkov@postgresql.org>
 2023-10-16 [e83d1b0c4] Add support event triggers on authenticated login
@@ -1677,7 +1639,7 @@ Author: Andrew Dunstan <andrew@dunslane.net>
 
 <listitem>
 <para>
-Add jsonpath methods to convert JSON values to different data types (Jeevan Chalke)
+Add jsonpath methods to convert JSON values to other JSON data types (Jeevan Chalke)
 </para>
 
 <para>
@@ -1956,6 +1918,8 @@ Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
 2024-04-29 [17a834a04] Reject SSL connection if ALPN is used but there's no com
 Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
 2024-05-11 [407e0b023] Change ALPN protocol ID to IANA-approved "postgresql"
+Author: Heikki Linnakangas <heikki.linnakangas@iki.fi>
+2024-05-16 [fb5718f35] Remove option to fall back from direct to postgres SSL n
 -->
 
 <listitem>
@@ -2450,6 +2414,17 @@ User-defined data type receive functions will no longer receive their data null-
 </para>
 </listitem>
 
+<!--
+Author: Andrew Dunstan <andrew@dunslane.net>
+2024-04-04 [3311ea86e] Introduce a non-recursive JSON parser
+-->
+
+<listitem>
+<para>
+Add incremental JSON parser for use with huge JSON documents (Andrew Dunstan)
+</para>
+</listitem>
+
 <!--
 Author: Nathan Bossart <nathan@postgresql.org>
 2024-02-28 [363eb0599] Convert README to Markdown.

src/test/regress/expected/aggregates.out

@@ -1273,6 +1273,37 @@ NOTICE:  drop cascades to 3 other objects
 DETAIL:  drop cascades to table minmaxtest1
 drop cascades to table minmaxtest2
 drop cascades to table minmaxtest3
+-- DISTINCT can also trigger wrong answers with hash aggregation (bug #18465)
+begin;
+set local enable_sort = off;
+explain (costs off)
+  select f1, (select distinct min(t1.f1) from int4_tbl t1 where t1.f1 = t0.f1)
+  from int4_tbl t0;
+                             QUERY PLAN                              
+---------------------------------------------------------------------
+ Seq Scan on int4_tbl t0
+   SubPlan 2
+     ->  HashAggregate
+           Group Key: (InitPlan 1).col1
+           InitPlan 1
+             ->  Limit
+                   ->  Seq Scan on int4_tbl t1
+                         Filter: ((f1 IS NOT NULL) AND (f1 = t0.f1))
+           ->  Result
+(9 rows)
+
+select f1, (select distinct min(t1.f1) from int4_tbl t1 where t1.f1 = t0.f1)
+from int4_tbl t0;
+     f1      |     min     
+-------------+-------------
+           0 |           0
+      123456 |      123456
+     -123456 |     -123456
+  2147483647 |  2147483647
+ -2147483647 | -2147483647
+(5 rows)
+
+rollback;
 -- check for correct detection of nested-aggregate errors
 select max(min(unique1)) from tenk1;
 ERROR:  aggregate function calls cannot be nested

src/test/regress/sql/aggregates.sql

@@ -436,6 +436,16 @@ select distinct min(f1), max(f1) from minmaxtest;
 
 drop table minmaxtest cascade;
 
+-- DISTINCT can also trigger wrong answers with hash aggregation (bug #18465)
+begin;
+set local enable_sort = off;
+explain (costs off)
+  select f1, (select distinct min(t1.f1) from int4_tbl t1 where t1.f1 = t0.f1)
+  from int4_tbl t0;
+select f1, (select distinct min(t1.f1) from int4_tbl t1 where t1.f1 = t0.f1)
+from int4_tbl t0;
+rollback;
+
 -- check for correct detection of nested-aggregate errors
 select max(min(unique1)) from tenk1;
 select (select max(min(unique1)) from int8_tbl) from tenk1;