Vizualizare sursă pentru „Adăugarea unei extensii în PostgreSQL”

<span data-link_translate_fr_title="Ajouter une extension en PostgreSQL"  data-link_translate_fr_url="Ajouter une extension en PostgreSQL"></span>[[:fr:Ajouter une extension en PostgreSQL]][[fr:Ajouter une extension en PostgreSQL]]
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<span data-link_translate_ru_title="Добавление расширения в PostgreSQL"  data-link_translate_ru_url="Добавление расширения в PostgreSQL"></span>[[:ru:Добавление расширения в PostgreSQL]][[ru:Добавление расширения в PostgreSQL]]
<span data-link_translate_pl_title="Dodawanie rozszerzeń w PostgreSQL"  data-link_translate_pl_url="Dodawanie rozszerzeń w PostgreSQL"></span>[[:pl:Dodawanie rozszerzeń w PostgreSQL]][[pl:Dodawanie rozszerzeń w PostgreSQL]]
<span data-link_translate_ja_title="PostgreSQLでの拡張機能の追加"  data-link_translate_ja_url="PostgreSQLでの拡張機能の追加"></span>[[:ja:PostgreSQLでの拡張機能の追加]][[ja:PostgreSQLでの拡張機能の追加]]
<span data-link_translate_zh_title="在PostgreSQL中添加一个扩展"  data-link_translate_zh_url="在PostgreSQL中添加一个扩展"></span>[[:zh:在PostgreSQL中添加一个扩展]][[zh:在PostgreSQL中添加一个扩展]]
<span data-link_translate_de_title="Hinzufügen einer Erweiterung in PostgreSQL"  data-link_translate_de_url="Hinzufügen einer Erweiterung in PostgreSQL"></span>[[:de:Hinzufügen einer Erweiterung in PostgreSQL]][[de:Hinzufügen einer Erweiterung in PostgreSQL]]
<span data-link_translate_nl_title="Een extensie toevoegen in PostgreSQL"  data-link_translate_nl_url="Een extensie toevoegen in PostgreSQL"></span>[[:nl:Een extensie toevoegen in PostgreSQL]][[nl:Een extensie toevoegen in PostgreSQL]]
<span data-link_translate_it_title="Aggiungere un'estensione in PostgreSQL"  data-link_translate_it_url="Aggiungere un'estensione in PostgreSQL"></span>[[:it:Aggiungere un'estensione in PostgreSQL]][[it:Aggiungere un'estensione in PostgreSQL]]
<span data-link_translate_pt_title="Acrescentar uma extensão no PostgreSQL"  data-link_translate_pt_url="Acrescentar uma extensão no PostgreSQL"></span>[[:pt:Acrescentar uma extensão no PostgreSQL]][[pt:Acrescentar uma extensão no PostgreSQL]]
<span data-link_translate_es_title="Añadir una extensión en PostgreSQL"  data-link_translate_es_url="Añadir una extensión en PostgreSQL"></span>[[:es:Añadir una extensión en PostgreSQL]][[es:Añadir una extensión en PostgreSQL]]
<span data-link_translate_en_title="Adding an extension in PostgreSQL"  data-link_translate_en_url="Adding an extension in PostgreSQL"></span>[[:en:Adding an extension in PostgreSQL]][[en:Adding an extension in PostgreSQL]]
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{{#seo:
|title=Adăugați o extensie în PostgreSQL.
|title_mode=append
|keywords=acestea,sunt,cuvintele,tale,cheie
|description=Aflați în acest articol ce înseamnă adăugarea unei extensii la o bază de date în PostgreSQL.
|image=Uploaded_file.png
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}}

==Introducere==
Această pagină se referă la adăugarea unei extensii la o bază de date [https://www.ikoula.ro/ro/cum-sa-instalati-postgresql PostgreSQL].

==Conectarea la PostgreSQL==
Mergem sub utilizatorul postgres, apoi ne conectăm la baza de date PostgreSQL '''test''':
<syntaxhighlight lang="bash">
# su - postgres
postgres@vm-postgres:~$ psql -d test
psql (9.1.24lts2)
Saisissez « help » pour l aide.

test=#
</syntaxhighlight>

Verificăm extensiile prezente în prezent:
<syntaxhighlight lang="bash">
test=# \dx
                          Liste des extensions installées
    Nom    | Version |   Schéma   |                   Description
-----------+---------+------------+-------------------------------------------------
 plpgsql   | 1.0     | pg_catalog | PL/pgSQL procedural language
(1 ligne)
</syntaxhighlight>

==Adăugarea unei extensii==
Vom adăuga, de exemplu, extensia '''unaccent''' (funcție care permite, printre altele, eliminarea accentelor):
<syntaxhighlight lang="bash">
test=# CREATE EXTENSION IF NOT EXISTS "unaccent";
CREATE EXTENSION
</syntaxhighlight>

Verificăm dacă acesta este la locul lui:
<syntaxhighlight lang="bash">
test=# \dx
                          Liste des extensions installées
    Nom    | Version |   Schéma   |                   Description
-----------+---------+------------+-------------------------------------------------
 plpgsql   | 1.0     | pg_catalog | PL/pgSQL procedural language
 unaccent  | 1.0     | public     | text search dictionary that removes accents
(2 lignes)
</syntaxhighlight>

De asemenea, putem verifica dacă este funcțional, de exemplu:
<syntaxhighlight lang="bash">
test=# SELECT unaccent('Hôtel');
 unaccent
----------
 Hotel
(1 ligne)
</syntaxhighlight>

Putem observa că cuvântul '''Hotel''' este redat fără accent circumflex.


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