{"id":839,"date":"2009-07-20T14:59:52","date_gmt":"2009-07-20T19:29:52","guid":{"rendered":"https:\/\/skatox.com\/blog\/?p=839"},"modified":"2023-02-28T09:56:48","modified_gmt":"2023-02-28T14:56:48","slug":"obtener-la-clave-primaria-primary-key-de-una-tabla-con-postgresql","status":"publish","type":"post","link":"https:\/\/skatox.com\/blog\/2009\/07\/20\/obtener-la-clave-primaria-primary-key-de-una-tabla-con-postgresql\/","title":{"rendered":"Obtener la clave primaria (Primary key) de una tabla con PostgreSQL"},"content":{"rendered":"\n<p>Si alguna vez necesitan obtener el nombre de la columna de una clave primaria, para una tabla almacenada en el gestor PostgreSQL utilizando una sentencia SQL, lo pueden hacer con la siguiente sentencia:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"sql\" class=\"language-sql\">SELECT column_name\nFROM information_schema.key_column_usage\nWHERE table_name='{$table}' AND constraint_name='{$table}_pkey';<\/code><\/pre>\n\n\n\n<p>El caso anterior es para un string con PHP donde $table almacena el nombre de la tabla de la que queremos obtener el nombre de su clave primaria. Para otros lenguajes, basta sustituir el {$table} por el nombre de la tabla.<\/p>\n\n\n\n<p>Espero que les sirve y les ahorre tiempo.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Si alguna vez necesitan obtener el nombre de la columna de una clave primaria, para una tabla almacenada en el gestor PostgreSQL utilizando una sentencia&#8230;<\/p>\n<div class=\"more-link-wrapper\"><a class=\"more-link\" href=\"https:\/\/skatox.com\/blog\/2009\/07\/20\/obtener-la-clave-primaria-primary-key-de-una-tabla-con-postgresql\/\">Seguir leyendo<span class=\"screen-reader-text\">Obtener la clave primaria (Primary key) de una tabla con PostgreSQL<\/span><\/a><\/div>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[547,716],"tags":[515,513,516,512,514,517],"class_list":["post-839","post","type-post","status-publish","format-standard","hentry","category-base-de-datos","category-todo-lo-relacionado-al-desarrollo-de-software","tag-clave-primaria","tag-database","tag-pk","tag-postgresql","tag-primary-key","tag-sql","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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