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Michael Paquier adbe62d04b Add PL/Sample to src/test/modules/ 
PL/Sample is an example template of procedural-language handler.  This
can be used as a base to implement a custom PL, or as a facility to test
APIs dedicated to PLs.  Much more could be done in this module, like
adding a simple validator, but this is left as future work.

The documentation included originally some C code to understand the
basics of PL handler implementation, but it was outdated, and not really
helpful either if trying to implement a new procedural language,
particularly when it came to the integration of a PL installation with
CREATE EXTENSION.

Author: Mark Wong
Reviewed-by: Tom Lane, Michael Paquier
Discussion: https://postgr.es/m/20200612172648.GA3327@2ndQuadrant.com
 		2020-08-18 11:10:50 +09:00
config Rename configure.in to configure.ac 2020-07-24 10:42:08 +02:00
contrib Make xact.h usable in frontend. 2020-08-17 10:50:13 +03:00
doc Add PL/Sample to src/test/modules/ 2020-08-18 11:10:50 +09:00
src Add PL/Sample to src/test/modules/ 2020-08-18 11:10:50 +09:00
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README 

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.

PostgreSQL has many language interfaces, many of which are listed here:

	https://www.postgresql.org/download/

See the file INSTALL for instructions on how to build and install
PostgreSQL.  That file also lists supported operating systems and
hardware platforms and contains information regarding any other
software packages that are required to build or run the PostgreSQL
system.  Copyright and license information can be found in the
file COPYRIGHT.  A comprehensive documentation set is included in this
distribution; it can be read as described in the installation
instructions.

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