database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00
Code Activity

Update SQL features/conformance information to SQL:2011

Browse Source
This commit is contained in:
Peter Eisentraut
2012-05-17 09:50:04 +03:00
parent be6d1c88a4
commit 939ec9b8a4
2 changed files with 32 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
doc/src/sgml/features.sgml
View File

@ -14,9 +14,9 @@
<para>
The formal name of the SQL standard is ISO/IEC 9075 <quote>Database
Language SQL</quote>. A revised version of the standard is released
from time to time; the most recent update appearing in 2008.
The 2008 version is referred to as ISO/IEC 9075:2008, or simply as SQL:2008.
The versions prior to that were SQL:2003, SQL:1999, and SQL-92. Each version
from time to time; the most recent update appearing in 2011.
The 2011 version is referred to as ISO/IEC 9075:2011, or simply as SQL:2011.
The versions prior to that were SQL:2008, SQL:2003, SQL:1999, and SQL-92. Each version
replaces the previous one, so claims of conformance to earlier
versions have no official merit.
<productname>PostgreSQL</productname> development aims for
@ -50,8 +50,8 @@
</para>
<para>
The <acronym>SQL:2008</acronym> and <acronym>SQL:2003</acronym>
standard versions are also split into a number
The standard versions beginning with <acronym>SQL:2003</acronym>
are also split into a number
of parts. Each is known by a shorthand name. Note that these parts
are not consecutively numbered.
@ -78,18 +78,18 @@
</para>
<para>
PostgreSQL supports most of the major features of SQL:2008. Out of
PostgreSQL supports most of the major features of SQL:2011. Out of
179 mandatory features required for full Core conformance,
PostgreSQL conforms to at least 160. In addition, there is a long
list of supported optional features. It might be worth noting that at
the time of writing, no current version of any database management
system claims full conformance to Core SQL:2008.
system claims full conformance to Core SQL:2011.
</para>
<para>
In the following two sections, we provide a list of those features
that <productname>PostgreSQL</productname> supports, followed by a
list of the features defined in <acronym>SQL:2008</acronym> which
list of the features defined in <acronym>SQL:2011</acronym> which
are not yet supported in <productname>PostgreSQL</productname>.
Both of these lists are approximate: There might be minor details that
are nonconforming for a feature that is listed as supported, and
@ -132,7 +132,7 @@
<title>Unsupported Features</title>
<para>
The following features defined in <acronym>SQL:2008</acronym> are not
The following features defined in <acronym>SQL:2011</acronym> are not
implemented in this release of
<productname>PostgreSQL</productname>. In a few cases, equivalent
functionality is available.