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peterepetere
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Remove read-only server settings lc_collate and lc_ctype
The GUC settings lc_collate and lc_ctype are from a time when those locale settings were cluster-global. When those locale settings were made per-database (PG 8.4), the settings were kept as read-only. As of PG 15, you can use ICU as the per-database locale provider, so examining these settings is already less meaningful and possibly confusing, since you need to look into pg_database to find out what is really happening, and they would likely become fully obsolete in the future anyway. Reviewed-by: Jeff Davis <pgsql@j-davis.com> Discussion: https://www.postgresql.org/message-id/696054d1-bc88-b6ab-129a-18b8bce6a6f0@enterprisedb.com
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12 files changed

+22
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‎contrib/citext/expected/citext_utf8.out‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,8 +8,8 @@
88
* to the "tr-TR-x-icu" collation where it will succeed.
99
*/
1010
SELECT getdatabaseencoding() <> 'UTF8' OR
11-
current_setting('lc_ctype') = 'C' OR
12-
(SELECT datlocprovider='i' FROM pg_database
11+
(SELECT (datlocprovider = 'c' AND datctype = 'C') OR datlocprovider = 'i'
12+
FROM pg_database
1313
WHERE datname=current_database())
1414
AS skip_test \gset
1515
\if :skip_test

‎contrib/citext/expected/citext_utf8_1.out‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -8,8 +8,8 @@
88
* to the "tr-TR-x-icu" collation where it will succeed.
99
*/
1010
SELECT getdatabaseencoding() <> 'UTF8' OR
11-
current_setting('lc_ctype') = 'C' OR
12-
(SELECT datlocprovider='i' FROM pg_database
11+
(SELECT (datlocprovider = 'c' AND datctype = 'C') OR datlocprovider = 'i'
12+
FROM pg_database
1313
WHERE datname=current_database())
1414
AS skip_test \gset
1515
\if :skip_test

‎contrib/citext/sql/citext_utf8.sql‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -9,8 +9,8 @@
99
*/
1010

1111
SELECT getdatabaseencoding() <> 'UTF8' OR
12-
current_setting('lc_ctype') = 'C' OR
13-
(SELECT datlocprovider='i' FROM pg_database
12+
(SELECT (datlocprovider = 'c' AND datctype = 'C') OR datlocprovider = 'i'
13+
FROM pg_database
1414
WHERE datname=current_database())
1515
AS skip_test \gset
1616
\if :skip_test

‎doc/src/sgml/config.sgml‎

Lines changed: 0 additions & 32 deletions
Original file line numberDiff line numberDiff line change
@@ -10788,38 +10788,6 @@ dynamic_library_path = 'C:\tools\postgresql;H:\my_project\lib;$libdir'
1078810788
</listitem>
1078910789
</varlistentry>
1079010790

10791-
<varlistentry id="guc-lc-collate" xreflabel="lc_collate">
10792-
<term><varname>lc_collate</varname> (<type>string</type>)
10793-
<indexterm>
10794-
<primary><varname>lc_collate</varname> configuration parameter</primary>
10795-
</indexterm>
10796-
</term>
10797-
<listitem>
10798-
<para>
10799-
Reports the locale in which sorting of textual data is done.
10800-
See <xref linkend="locale"/> for more information.
10801-
This value is determined when a database is created.
10802-
</para>
10803-
</listitem>
10804-
</varlistentry>
10805-
10806-
<varlistentry id="guc-lc-ctype" xreflabel="lc_ctype">
10807-
<term><varname>lc_ctype</varname> (<type>string</type>)
10808-
<indexterm>
10809-
<primary><varname>lc_ctype</varname> configuration parameter</primary>
10810-
</indexterm>
10811-
</term>
10812-
<listitem>
10813-
<para>
10814-
Reports the locale that determines character classifications.
10815-
See <xref linkend="locale"/> for more information.
10816-
This value is determined when a database is created.
10817-
Ordinarily this will be the same as <varname>lc_collate</varname>,
10818-
but for special applications it might be set differently.
10819-
</para>
10820-
</listitem>
10821-
</varlistentry>
10822-
1082310791
<varlistentry id="guc-max-function-args" xreflabel="max_function_args">
1082410792
<term><varname>max_function_args</varname> (<type>integer</type>)
1082510793
<indexterm>

‎src/backend/utils/init/postinit.c‎

Lines changed: 0 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -483,10 +483,6 @@ CheckMyDatabase(const char *name, bool am_superuser, bool override_allow_connect
483483
quote_identifier(name))));
484484
}
485485

486-
/* Make the locale settings visible as GUC variables, too */
487-
SetConfigOption("lc_collate", collate, PGC_INTERNAL, PGC_S_DYNAMIC_DEFAULT);
488-
SetConfigOption("lc_ctype", ctype, PGC_INTERNAL, PGC_S_DYNAMIC_DEFAULT);
489-
490486
ReleaseSysCache(tup);
491487
}
492488

‎src/backend/utils/misc/guc_tables.c‎

Lines changed: 0 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -563,8 +563,6 @@ static char *syslog_ident_str;
563563
static double phony_random_seed;
564564
static char *client_encoding_string;
565565
static char *datestyle_string;
566-
static char *locale_collate;
567-
static char *locale_ctype;
568566
static char *server_encoding_string;
569567
static char *server_version_string;
570568
static int server_version_num;
@@ -4050,30 +4048,6 @@ struct config_string ConfigureNamesString[] =
40504048
NULL, NULL, NULL
40514049
},
40524050

4053-
/* See main.c about why defaults for LC_foo are not all alike */
4054-
4055-
{
4056-
{"lc_collate", PGC_INTERNAL, PRESET_OPTIONS,
4057-
gettext_noop("Shows the collation order locale."),
4058-
NULL,
4059-
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
4060-
},
4061-
&locale_collate,
4062-
"C",
4063-
NULL, NULL, NULL
4064-
},
4065-
4066-
{
4067-
{"lc_ctype", PGC_INTERNAL, PRESET_OPTIONS,
4068-
gettext_noop("Shows the character classification and case conversion locale."),
4069-
NULL,
4070-
GUC_NOT_IN_SAMPLE | GUC_DISALLOW_IN_FILE
4071-
},
4072-
&locale_ctype,
4073-
"C",
4074-
NULL, NULL, NULL
4075-
},
4076-
40774051
{
40784052
{"lc_messages", PGC_SUSET, CLIENT_CONN_LOCALE,
40794053
gettext_noop("Sets the language in which messages are displayed."),

‎src/test/regress/expected/collate.icu.utf8.out‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1023,15 +1023,15 @@ SET client_min_messages TO WARNING;
10231023
do $$
10241024
BEGIN
10251025
EXECUTE 'CREATE COLLATION test0 (provider = icu, locale = ' ||
1026-
quote_literal(current_setting('lc_collate')) || ');';
1026+
quote_literal((SELECT daticulocale FROM pg_database WHERE datname = current_database())) || ');';
10271027
END
10281028
$$;
10291029
CREATE COLLATION test0 FROM "C"; -- fail, duplicate name
10301030
ERROR: collation "test0" already exists
10311031
do $$
10321032
BEGIN
10331033
EXECUTE 'CREATE COLLATION test1 (provider = icu, locale = ' ||
1034-
quote_literal(current_setting('lc_collate')) || ');';
1034+
quote_literal((SELECT daticulocale FROM pg_database WHERE datname = current_database())) || ');';
10351035
END
10361036
$$;
10371037
RESET client_min_messages;

‎src/test/regress/expected/collate.linux.utf8.out‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -1027,7 +1027,7 @@ CREATE SCHEMA test_schema;
10271027
do $$
10281028
BEGIN
10291029
EXECUTE 'CREATE COLLATION test0 (locale = ' ||
1030-
quote_literal(current_setting('lc_collate')) || ');';
1030+
quote_literal((SELECT datcollate FROM pg_database WHERE datname = current_database())) || ');';
10311031
END
10321032
$$;
10331033
CREATE COLLATION test0 FROM "C"; -- fail, duplicate name
@@ -1039,9 +1039,9 @@ NOTICE: collation "test0" for encoding "UTF8" already exists, skipping
10391039
do $$
10401040
BEGIN
10411041
EXECUTE 'CREATE COLLATION test1 (lc_collate = ' ||
1042-
quote_literal(current_setting('lc_collate')) ||
1042+
quote_literal((SELECT datcollate FROM pg_database WHERE datname = current_database())) ||
10431043
', lc_ctype = ' ||
1044-
quote_literal(current_setting('lc_ctype')) || ');';
1044+
quote_literal((SELECT datctype FROM pg_database WHERE datname = current_database())) || ');';
10451045
END
10461046
$$;
10471047
CREATE COLLATION test3 (lc_collate = 'en_US.utf8'); -- fail, need lc_ctype

‎src/test/regress/expected/collate.windows.win1252.out‎

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -863,7 +863,7 @@ CREATE SCHEMA test_schema;
863863
do $$
864864
BEGIN
865865
EXECUTE 'CREATE COLLATION test0 (locale = ' ||
866-
quote_literal(current_setting('lc_collate')) || ');';
866+
quote_literal((SELECT datcollate FROM pg_database WHERE datname = current_database())) || ');';
867867
END
868868
$$;
869869
CREATE COLLATION test0 FROM "C"; -- fail, duplicate name
@@ -875,9 +875,9 @@ NOTICE: collation "test0" for encoding "WIN1252" already exists, skipping
875875
do $$
876876
BEGIN
877877
EXECUTE 'CREATE COLLATION test1 (lc_collate = ' ||
878-
quote_literal(current_setting('lc_collate')) ||
878+
quote_literal((SELECT datcollate FROM pg_database WHERE datname = current_database())) ||
879879
', lc_ctype = ' ||
880-
quote_literal(current_setting('lc_ctype')) || ');';
880+
quote_literal((SELECT datctype FROM pg_database WHERE datname = current_database())) || ');';
881881
END
882882
$$;
883883
CREATE COLLATION test3 (lc_collate = 'en_US.utf8'); -- fail, need lc_ctype

‎src/test/regress/sql/collate.icu.utf8.sql‎

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -362,14 +362,14 @@ SET client_min_messages TO WARNING;
362362
do $$
363363
BEGIN
364364
EXECUTE 'CREATE COLLATION test0 (provider = icu, locale = ' ||
365-
quote_literal(current_setting('lc_collate')) || ');';
365+
quote_literal((SELECT daticulocale FROM pg_database WHERE datname = current_database())) || ');';
366366
END
367367
$$;
368368
CREATE COLLATION test0 FROM "C"; -- fail, duplicate name
369369
do $$
370370
BEGIN
371371
EXECUTE 'CREATE COLLATION test1 (provider = icu, locale = ' ||
372-
quote_literal(current_setting('lc_collate')) || ');';
372+
quote_literal((SELECT daticulocale FROM pg_database WHERE datname = current_database())) || ');';
373373
END
374374
$$;
375375

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