mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Remove obsolete information schema tables

Browse Source 
Remove SQL_LANGUAGES, which was eliminated in SQL:2008, and
SQL_PACKAGES and SQL_SIZING_PROFILES, which were eliminated in
SQL:2011.  Since they were dropped by the SQL standard, the
information in them was no longer updated and therefore no longer
useful.

This also removes the feature-package association information in
sql_feature_packages.txt, but for the time begin we are keeping the
information which features are in the Core package (that is, mandatory
SQL features).  Maybe at some point someone wants to invent a way to
store that that does not involve using the "package" mechanism
anymore.

Discussion https://www.postgresql.org/message-id/flat/91334220-7900-071b-9327-0c6ecd012017%402ndquadrant.com
This commit is contained in:
Peter Eisentraut 2019-10-25 21:11:48 +02:00
parent 592a16321b
commit 2fc2a88e67
7 changed files with 4 additions and 329 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
doc/src/sgml/features.sgml
View File

@ -44,10 +44,7 @@
broad three levels found in <acronym>SQL-92</acronym>. A large
subset of these features represents the <quote>Core</quote>
features, which every conforming SQL implementation must supply.
The rest of the features are purely optional. Some optional
features are grouped together to form <quote>packages</quote>, which
SQL implementations can claim conformance to, thus claiming
conformance to particular groups of features.
The rest of the features are purely optional.
</para>
<para>
@ -116,7 +113,7 @@
<thead>
<row>
<entry>Identifier</entry>
<entry>Package</entry>
<entry>Core?</entry>
<entry>Description</entry>
<entry>Comment</entry>
</row>
@ -143,7 +140,7 @@
<thead>
<row>
<entry>Identifier</entry>
<entry>Package</entry>
<entry>Core?</entry>
<entry>Description</entry>
<entry>Comment</entry>
</row>

216
doc/src/sgml/information_schema.sgml
View File

@ -4963,160 +4963,6 @@ ORDER BY c.ordinal_position;
</table>
</sect1>
<sect1 id="infoschema-sql-languages">
<title><literal>sql_languages</literal></title>
<para>
The table <literal>sql_languages</literal> contains one row for
each SQL language binding that is supported by
<productname>PostgreSQL</productname>.
<productname>PostgreSQL</productname> supports direct SQL and
embedded SQL in C; that is all you will learn from this table.
</para>
<para>
This table was removed from the SQL standard in SQL:2008, so there
are no entries referring to standards later than SQL:2003.
</para>
<table>
<title><literal>sql_languages</literal> Columns</title>
<tgroup cols="3">
<thead>
<row>
<entry>Name</entry>
<entry>Data Type</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>sql_language_source</literal></entry>
<entry><type>character_data</type></entry>
<entry>
The name of the source of the language definition; always
<literal>ISO 9075</literal>, that is, the SQL standard
</entry>
</row>
<row>
<entry><literal>sql_language_year</literal></entry>
<entry><type>character_data</type></entry>
<entry>
The year the standard referenced in
<literal>sql_language_source</literal> was approved.
</entry>
</row>
<row>
<entry><literal>sql_language_conformance</literal></entry>
<entry><type>character_data</type></entry>
<entry>
The standard conformance level for the language binding. For
ISO 9075:2003 this is always <literal>CORE</literal>.
</entry>
</row>
<row>
<entry><literal>sql_language_integrity</literal></entry>
<entry><type>character_data</type></entry>
<entry>Always null (This value is relevant to an earlier version of the SQL standard.)</entry>
</row>
<row>
<entry><literal>sql_language_implementation</literal></entry>
<entry><type>character_data</type></entry>
<entry>Always null</entry>
</row>
<row>
<entry><literal>sql_language_binding_style</literal></entry>
<entry><type>character_data</type></entry>
<entry>
The language binding style, either <literal>DIRECT</literal> or
<literal>EMBEDDED</literal>
</entry>
</row>
<row>
<entry><literal>sql_language_programming_language</literal></entry>
<entry><type>character_data</type></entry>
<entry>
The programming language, if the binding style is
<literal>EMBEDDED</literal>, else null. <productname>PostgreSQL</productname> only
supports the language C.
</entry>
</row>
</tbody>
</tgroup>
</table>
</sect1>
<sect1 id="infoschema-sql-packages">
<title><literal>sql_packages</literal></title>
<para>
The table <literal>sql_packages</literal> contains information
about which feature packages defined in the SQL standard are
supported by <productname>PostgreSQL</productname>. Refer to <xref
linkend="features"/> for background information on feature packages.
</para>
<table>
<title><literal>sql_packages</literal> Columns</title>
<tgroup cols="3">
<thead>
<row>
<entry>Name</entry>
<entry>Data Type</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>feature_id</literal></entry>
<entry><type>character_data</type></entry>
<entry>Identifier string of the package</entry>
</row>
<row>
<entry><literal>feature_name</literal></entry>
<entry><type>character_data</type></entry>
<entry>Descriptive name of the package</entry>
</row>
<row>
<entry><literal>is_supported</literal></entry>
<entry><type>yes_or_no</type></entry>
<entry>
<literal>YES</literal> if the package is fully supported by the
current version of <productname>PostgreSQL</productname>, <literal>NO</literal> if not
</entry>
</row>
<row>
<entry><literal>is_verified_by</literal></entry>
<entry><type>character_data</type></entry>
<entry>
Always null, since the <productname>PostgreSQL</productname> development group does not
perform formal testing of feature conformance
</entry>
</row>
<row>
<entry><literal>comments</literal></entry>
<entry><type>character_data</type></entry>
<entry>Possibly a comment about the supported status of the package</entry>
</row>
</tbody>
</tgroup>
</table>
</sect1>
<sect1 id="infoschema-sql-parts">
<title><literal>sql_parts</literal></title>
@ -5239,68 +5085,6 @@ ORDER BY c.ordinal_position;
</table>
</sect1>
<sect1 id="infoschema-sql-sizing-profiles">
<title><literal>sql_sizing_profiles</literal></title>
<para>
The table <literal>sql_sizing_profiles</literal> contains
information about the <literal>sql_sizing</literal> values that are
required by various profiles of the SQL standard. <productname>PostgreSQL</productname> does
not track any SQL profiles, so this table is empty.
</para>
<table>
<title><literal>sql_sizing_profiles</literal> Columns</title>
<tgroup cols="3">
<thead>
<row>
<entry>Name</entry>
<entry>Data Type</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry><literal>sizing_id</literal></entry>
<entry><type>cardinal_number</type></entry>
<entry>Identifier of the sizing item</entry>
</row>
<row>
<entry><literal>sizing_name</literal></entry>
<entry><type>character_data</type></entry>
<entry>Descriptive name of the sizing item</entry>
</row>
<row>
<entry><literal>profile_id</literal></entry>
<entry><type>character_data</type></entry>
<entry>Identifier string of a profile</entry>
</row>
<row>
<entry><literal>required_value</literal></entry>
<entry><type>cardinal_number</type></entry>
<entry>
The value required by the SQL profile for the sizing item, or 0
if the profile places no limit on the sizing item, or null if
the profile does not require any of the features for which the
sizing item is applicable
</entry>
</row>
<row>
<entry><literal>comments</literal></entry>
<entry><type>character_data</type></entry>
<entry>Possibly a comment pertaining to the sizing item within the profile</entry>
</row>
</tbody>
</tgroup>
</table>
</sect1>
<sect1 id="infoschema-table-constraints">
<title><literal>table_constraints</literal></title>

70
src/backend/catalog/information_schema.sql
View File

@ -1648,56 +1648,6 @@ INSERT INTO sql_implementation_info VALUES ('46', 'TRANSACTION CAPABLE', 2, N
GRANT SELECT ON sql_implementation_info TO PUBLIC;
/*
* SQL_LANGUAGES table
* apparently removed in SQL:2008
*/
CREATE TABLE sql_languages (
sql_language_source character_data,
sql_language_year character_data,
sql_language_conformance character_data,
sql_language_integrity character_data,
sql_language_implementation character_data,
sql_language_binding_style character_data,
sql_language_programming_language character_data
);
INSERT INTO sql_languages VALUES ('ISO 9075', '1999', 'CORE', NULL, NULL, 'DIRECT', NULL);
INSERT INTO sql_languages VALUES ('ISO 9075', '1999', 'CORE', NULL, NULL, 'EMBEDDED', 'C');
INSERT INTO sql_languages VALUES ('ISO 9075', '2003', 'CORE', NULL, NULL, 'DIRECT', NULL);
INSERT INTO sql_languages VALUES ('ISO 9075', '2003', 'CORE', NULL, NULL, 'EMBEDDED', 'C');
GRANT SELECT ON sql_languages TO PUBLIC;
/*
* SQL_PACKAGES table
* removed in SQL:2011
*/
CREATE TABLE sql_packages (
feature_id character_data,
feature_name character_data,
is_supported yes_or_no,
is_verified_by character_data,
comments character_data
);
INSERT INTO sql_packages VALUES ('PKG000', 'Core', 'NO', NULL, '');
INSERT INTO sql_packages VALUES ('PKG001', 'Enhanced datetime facilities', 'YES', NULL, '');
INSERT INTO sql_packages VALUES ('PKG002', 'Enhanced integrity management', 'NO', NULL, '');
INSERT INTO sql_packages VALUES ('PKG003', 'OLAP facilities', 'NO', NULL, '');
INSERT INTO sql_packages VALUES ('PKG004', 'PSM', 'NO', NULL, 'PL/pgSQL is similar.');
INSERT INTO sql_packages VALUES ('PKG005', 'CLI', 'NO', NULL, 'ODBC is similar.');
INSERT INTO sql_packages VALUES ('PKG006', 'Basic object support', 'NO', NULL, '');
INSERT INTO sql_packages VALUES ('PKG007', 'Enhanced object support', 'NO', NULL, '');
INSERT INTO sql_packages VALUES ('PKG008', 'Active database', 'NO', NULL, '');
INSERT INTO sql_packages VALUES ('PKG010', 'OLAP', 'NO', NULL, 'NO');
GRANT SELECT ON sql_packages TO PUBLIC;
/*
* 5.59
* SQL_PARTS table
@ -1768,26 +1718,6 @@ UPDATE sql_sizing
GRANT SELECT ON sql_sizing TO PUBLIC;
/*
* SQL_SIZING_PROFILES table
* removed in SQL:2011
*/
-- The data in this table are defined by various profiles of SQL.
-- Since we don't have any information about such profiles, we provide
-- an empty table.
CREATE TABLE sql_sizing_profiles (
sizing_id cardinal_number,
sizing_name character_data,
profile_id character_data,
required_value cardinal_number,
comments character_data
);
GRANT SELECT ON sql_sizing_profiles TO PUBLIC;
/*
* 5.61
* TABLE_CONSTRAINTS view

29
src/backend/catalog/sql_feature_packages.txt
View File

@ -22,46 +22,17 @@ F021 Core
F031 Core
F041 Core
F051 Core
F052 Enhanced datetime facilities
F081 Core
F131 Core
F181 Core
F191 Enhanced integrity management
F201 Core
F221 Core
F261 Core
F311 Core
F411 Enhanced datetime facilities
F471 Core
F481 Core
F491 Enhanced integrity management
F501 Core
F521 Enhanced integrity management
F555 Enhanced datetime facilities
F671 Enhanced integrity management
F701 Enhanced integrity management
F812 Core
S011 Core
S023 Basic object support
S024 Enhanced object support
S041 Basic object support
S043 Enhanced object support
S051 Basic object support
S071 Enhanced object support
S081 Enhanced object support
S111 Enhanced object support
S151 Basic object support
S161 Enhanced object support
S211 Enhanced object support
S231 Enhanced object support
T041 Basic object support
T191 Enhanced integrity management
T201 Enhanced integrity management
T211 Active database
T211 Enhanced integrity management
T212 Enhanced integrity management
T321 Core
T322 PSM
T431 OLAP
T611 OLAP
T631 Core

4
src/backend/catalog/sql_features.txt
View File

@ -285,11 +285,7 @@ F492 Optional table constraint enforcement NO
F501 Features and conformance views YES
F501 Features and conformance views 01 SQL_FEATURES view YES
F501 Features and conformance views 02 SQL_SIZING view YES
F501 Features and conformance views 03 SQL_LANGUAGES view YES
F502 Enhanced documentation tables YES
F502 Enhanced documentation tables 01 SQL_SIZING_PROFILES view YES
F502 Enhanced documentation tables 02 SQL_IMPLEMENTATION_INFO view YES
F502 Enhanced documentation tables 03 SQL_PACKAGES view YES
F521 Assertions NO
F531 Temporary tables YES
F555 Enhanced seconds precision YES

2
src/include/catalog/catversion.h
View File

@ -53,6 +53,6 @@
*/
/* yyyymmddN */
#define CATALOG_VERSION_NO 201909251
#define CATALOG_VERSION_NO 201910251
#endif

3
src/test/regress/expected/sanity_check.out
View File

@ -177,11 +177,8 @@ shighway|t
slow_emp4000|f
sql_features|f
sql_implementation_info|f
sql_languages|f
sql_packages|f
sql_parts|f
sql_sizing|f
sql_sizing_profiles|f
stud_emp|f
student|f
tableam_parted_a_heap2|f