view doc/postgresql.txt @ 6806:bdd28b244839

- issue2551223 - fix timestamp truncation in mysql and postgresql The data types used to represent timestamps in pg and mysql for ephemeral tables: sessions and otks don't have enough signifcant digits to work. As a result the timestamps are rounduped (up/down) rsuling in the stored timestamp being 2 minutes (pg) or 2-3 hours(mysql) off from what it should be. Modify db schema to use a numeric type that preserves more significant figures. Implement schema upgrade. Document need for upgrade in upgrading.txt. Write tests for schema upgrade. Implement test for updateTimestamp method on BasicDatabase that showed this issue in the first place. Write overrides for test for anydbm/memorydb which store timestamp properly or not at all.
author John Rouillard <rouilj@ieee.org>
date Mon, 25 Jul 2022 17:20:20 -0400
parents a0a100453eb9
children b21ebabeb2ef
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.. index:: postgres; deployment notes

==========================
PostgreSQL/psycopg Backend
==========================

This are notes about PostqreSQL backend based on the psycopg adapter for
Roundup issue tracker.

Prerequisites
=============

To use PostgreSQL as backend for storing roundup data, you should
additionally install:

1. PostgreSQL_ 8.x or higher

2. The psycopg_ python interface to PostgreSQL_

Note that you currently need at least version 2.8 of psycopg_ -- the
postgresql backend will work with 2.7 but if you're using the native
postgresql indexer you need at least 2.8. Also if you want to run the
tests, these also need 2.8. If your distribution has an older version we
suggest that you install into a python virtual environment.

.. _psycopg: https://www.psycopg.org/
.. _PostgreSQL: https://www.postgresql.org/



Running the PostgreSQL unit tests
=================================

The user that you're running the tests as will need to be able to access
the postgresql database on the local machine and create and drop
databases. See the config values in 'test/db_test_base.py' 
about which database connection, name and user will be used.


Credit
======

The postgresql backend was originally submitted by Federico Di Gregorio
<fog@initd.org>


Roundup Issue Tracker: http://roundup-tracker.org/