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Tom Lane 1973d9fb31 Doc: update documentation about EXCLUDE constraint elements. 
What the documentation calls an exclude_element is an index_elem
according to gram.y, and it allows all the same options that
a CREATE INDEX column specification does.  The COLLATE patch
neglected to update the CREATE/ALTER TABLE docs about that,
and later the opclass-parameters patch made the same oversight.
Add those options to the syntax synopses, and polish the
associated text a bit.

Back-patch to v13 where opclass parameters came in.  We could
update v12 with just the COLLATE omission, but it doesn't quite
seem worth the trouble at this point.

Shihao Zhong, reviewed by Daniel Vérité, Shubham Khanna and myself

Discussion: https://postgr.es/m/CAGRkXqShbVyB8E3gapfdtuwiWTiK=Q67Qb9qwxu=+-w0w46EBA@mail.gmail.com
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contrib Make libpqsrv_cancel's return const char *, not char * 2024-04-05 18:23:10 +02:00
doc Doc: update documentation about EXCLUDE constraint elements. 2024-04-07 15:36:11 -04:00
src Use conditional variable to wait for next MultiXact offset 2024-04-07 20:33:45 +02:00
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README.md

PostgreSQL Database Management System

This directory contains the source code distribution of the PostgreSQL database management system.

PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.

Copyright and license information can be found in the file COPYRIGHT.

General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.

The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.