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<div class="section" id="postgresql">
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<h1><a class="toc-backref" href="#id1">PostgreSQL</a><a class="headerlink" href="#postgresql" title="Permalink to this headline">¶</a></h1>
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<div class="contents topic" id="table-of-contents">
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<p class="topic-title">Table of Contents</p>
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<ul class="simple">
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<li><a class="reference internal" href="#postgresql" id="id1">PostgreSQL</a><ul>
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<li><a class="reference internal" href="#repository-manager" id="id2">Repository Manager</a></li>
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<li><a class="reference internal" href="#file-locations" id="id3">File Locations</a></li>
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<li><a class="reference internal" href="#the-pg-hba-conf-file" id="id4">The pg_hba.conf File</a></li>
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<li><a class="reference internal" href="#the-postgresql-conf-file" id="id5">The postgresql.conf File</a><ul>
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<li><a class="reference internal" href="#basic-commands" id="id6">Basic Commands</a><ul>
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<li><a class="reference internal" href="#connecting-to-postgresql" id="id7">Connecting to PostgreSQL</a></li>
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<li><a class="reference internal" href="#psql" id="id8">PSQL</a></li>
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</ul>
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</li>
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</ul>
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<div class="section" id="repository-manager">
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<h2><a class="toc-backref" href="#id2">Repository Manager</a><a class="headerlink" href="#repository-manager" title="Permalink to this headline">¶</a></h2>
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<p>The Repository installer and manager allows you to install your selected version of the PostgreSQL Repository.</p>
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<p>It can be access via the Pg Installer tab as shown below:</p>
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<img alt="../../_images/postgresql-tab.png" src="../../_images/postgresql-tab.png" />
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<p>You can also use the manager to install and update packages as well.</p>
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<p>As certain packages require EPEL for CentOS, the EPEL repository is installed as well when installing on CentOS.</p>
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<img alt="../../_images/pgsql-installer.png" src="../../_images/pgsql-installer.png" />
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</div>
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<div class="section" id="file-locations">
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<h2><a class="toc-backref" href="#id3">File Locations</a><a class="headerlink" href="#file-locations" title="Permalink to this headline">¶</a></h2>
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<p>The PostgreSQL config direcotry is located at:</p>
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<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">postgresql</span><span class="o">/</span><span class="mi">15</span><span class="o">/</span><span class="n">main</span>
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</pre></div>
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</div>
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</div>
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<div class="section" id="the-pg-hba-conf-file">
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<h2><a class="toc-backref" href="#id4">The pg_hba.conf File</a><a class="headerlink" href="#the-pg-hba-conf-file" title="Permalink to this headline">¶</a></h2>
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<p>On installation via the Wizard, PostgreSQL is configured for use with SSL and uses scram-sha-256 authentication for all users and databases.</p>
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<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="nb">local</span><span class="w"> </span>all<span class="w"> </span>all<span class="w"> </span>trust
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host<span class="w"> </span>all<span class="w"> </span>all<span class="w"> </span><span class="m">127</span>.0.0.1<span class="w"> </span><span class="m">255</span>.255.255.255<span class="w"> </span>trust
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host<span class="w"> </span>all<span class="w"> </span>all<span class="w"> </span><span class="m">0</span>.0.0.0/0<span class="w"> </span>scram-sha-256
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host<span class="w"> </span>all<span class="w"> </span>all<span class="w"> </span>::1/128<span class="w"> </span>scram-sha-256
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hostssl<span class="w"> </span>all<span class="w"> </span>all<span class="w"> </span><span class="m">127</span>.0.0.1<span class="w"> </span><span class="m">255</span>.255.255.255<span class="w"> </span>scram-sha-256
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hostssl<span class="w"> </span>all<span class="w"> </span>all<span class="w"> </span><span class="m">0</span>.0.0.0/0<span class="w"> </span>scram-sha-256
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hostssl<span class="w"> </span>all<span class="w"> </span>all<span class="w"> </span>::1/128<span class="w"> </span>scram-sha-256
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</pre></div>
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</div>
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</div>
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<div class="section" id="the-postgresql-conf-file">
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<h2><a class="toc-backref" href="#id5">The postgresql.conf File</a><a class="headerlink" href="#the-postgresql-conf-file" title="Permalink to this headline">¶</a></h2>
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||
<p>On installation via the Wizard, PostgreSQL is configured to accept connections on all interfaces as well as SSL connections.</p>
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<div class="highlight-bash notranslate"><div class="highlight"><pre><span></span><span class="c1">#------------------------------------------------------------------------------</span>
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<span class="c1"># CONNECTIONS AND AUTHENTICATION</span>
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<span class="c1">#------------------------------------------------------------------------------</span>
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<span class="c1"># - Connection Settings -</span>
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<span class="nv">listen_addresses</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s1">'*'</span>
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<span class="o">)</span>
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<span class="c1"># - SSL -</span>
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<span class="nv">ssl</span><span class="w"> </span><span class="o">=</span><span class="w"> </span>on
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</pre></div>
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</div>
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<p>Above are excepts.</p>
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<p>On installation, the native PostgreSQL Database Server module is also activated.</p>
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<p>It is located under Servers > PostgreSQL Database Server</p>
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<img alt="../../_images/PostgreSQL-Webmin.png" src="../../_images/PostgreSQL-Webmin.png" />
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<div class="section" id="basic-commands">
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<h3><a class="toc-backref" href="#id6">Basic Commands</a><a class="headerlink" href="#basic-commands" title="Permalink to this headline">¶</a></h3>
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<p>Below are some basic PSQL commands.</p>
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<p>PostgreSQL documentation, both from PostgreSQL.org and other sources, is extensive.</p>
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<p><a class="reference external" href="https://www.postgresql.org/docs/current/tutorial.html">https://www.postgresql.org/docs/current/tutorial.html</a></p>
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<p><a class="reference external" href="https://www.postgresqltutorial.com/">https://www.postgresqltutorial.com/</a></p>
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<div class="section" id="connecting-to-postgresql">
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<h4><a class="toc-backref" href="#id7">Connecting to PostgreSQL</a><a class="headerlink" href="#connecting-to-postgresql" title="Permalink to this headline">¶</a></h4>
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<p>There are a number of options for viewing your PostgreSQL data.</p>
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<blockquote>
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<div><ol class="arabic simple">
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<li>PSQL command line</li>
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<li>PgAdmin</li>
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<li>Control Panel</li>
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</ol>
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</div></blockquote>
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</div>
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<div class="section" id="psql">
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<h4><a class="toc-backref" href="#id8">PSQL</a><a class="headerlink" href="#psql" title="Permalink to this headline">¶</a></h4>
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<p>Connect via SSH and su to postgres</p>
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<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">root@demo:# </span>su<span class="w"> </span>-<span class="w"> </span>postgres
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</pre></div>
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</div>
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<p>Start psql</p>
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<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">postgres@demo:~$ </span>psql
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<span class="go">psql (15.3 (Ubuntu 15.3-1.pgdg22.04+1))</span>
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<span class="go">Type "help" for help.</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>List all databases using the ‘\l’ command</p>
|
||
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">postgres=# \l</span>
|
||
<span class="go"> List of databases</span>
|
||
<span class="go"> Name | Owner | Encoding | Collate | Ctype | ICU Locale | Locale Provider | Access privileges</span>
|
||
<span class="go">------------+----------+----------+---------+---------+------------+-----------------+-----------------------</span>
|
||
<span class="go"> geostore | postgres | UTF8 | C.UTF-8 | C.UTF-8 | | libc |</span>
|
||
<span class="go"> geodb | geouser | UTF8 | C.UTF-8 | C.UTF-8 | | libc |</span>
|
||
<span class="go"> postgisftw | pgis | UTF8 | C.UTF-8 | C.UTF-8 | | libc |</span>
|
||
<span class="go"> postgres | postgres | UTF8 | C.UTF-8 | C.UTF-8 | | libc |</span>
|
||
<span class="go"> template0 | postgres | UTF8 | C.UTF-8 | C.UTF-8 | | libc | =c/postgres +</span>
|
||
<span class="go"> | | | | | | | postgres=CTc/postgres</span>
|
||
<span class="go"> template1 | postgres | UTF8 | C.UTF-8 | C.UTF-8 | | libc | =c/postgres +</span>
|
||
<span class="go"> | | | | | | | postgres=CTc/postgres</span>
|
||
<span class="gp gp-VirtualEnv">(5 rows)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Connect to target database (in this case, postgisftw) using the ‘\c’ command</p>
|
||
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">postgres=# \c postgisftw</span>
|
||
<span class="go">You are now connected to database "postgisftw" as user "postgres".</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>List tables in database using the ‘\dt’ command</p>
|
||
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go"> postgisftw=# \dt</span>
|
||
<span class="go"> List of relations</span>
|
||
<span class="go"> Schema | Name | Type | Owner</span>
|
||
<span class="go">--------+-------------------+-------+----------</span>
|
||
<span class="go"> public | configuration | table | pgis</span>
|
||
<span class="go"> public | countries | table | pgis</span>
|
||
<span class="go"> public | pointsofinterest | table | pgis</span>
|
||
<span class="go"> public | spatial_ref_sys | table | postgres</span>
|
||
<span class="go"> public | ways | table | pgis</span>
|
||
<span class="go"> public | ways_vertices_pgr | table | pgis</span>
|
||
<span class="gp gp-VirtualEnv">(6 rows)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Select country name from the countries table, limited to 10:</p>
|
||
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">postgisftw=# select name from countries limit 10;</span>
|
||
<span class="go"> name</span>
|
||
<span class="go">--------------------------</span>
|
||
<span class="go"> Zimbabwe</span>
|
||
<span class="go"> Zambia</span>
|
||
<span class="go"> Montserrat</span>
|
||
<span class="go"> Yemen</span>
|
||
<span class="go"> Vanuatu</span>
|
||
<span class="go"> Uruguay</span>
|
||
<span class="go"> Vietnam</span>
|
||
<span class="go"> Micronesia</span>
|
||
<span class="go"> Venezuela</span>
|
||
<span class="go"> Vatican</span>
|
||
<span class="go"> (10 rows)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Select country name from the countries table, limited to 10, sorting acecnded:</p>
|
||
<div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">postgisftw=# select name from countries order by name ASC limit 10;</span>
|
||
<span class="go"> name</span>
|
||
<span class="go">-------------------</span>
|
||
<span class="go"> Afghanistan</span>
|
||
<span class="go"> Albania</span>
|
||
<span class="go"> Algeria</span>
|
||
<span class="go"> American Samoa</span>
|
||
<span class="go"> Andorra</span>
|
||
<span class="go"> Angola</span>
|
||
<span class="go"> Anguilla</span>
|
||
<span class="go"> Antarctica</span>
|
||
<span class="go"> Antigua and Barb.</span>
|
||
<span class="go"> Argentina</span>
|
||
<span class="gp gp-VirtualEnv">(10 rows)</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>postgisftw=#</p>
|
||
</div>
|
||
</div>
|
||
</div>
|
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</div>
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|
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<a href="../createdb/index.html" class="btn btn-neutral float-left" title="Create Database" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a>
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