{"id":116338,"date":"2024-06-04T21:39:58","date_gmt":"2024-06-04T19:39:58","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/pervyj-stabilnyj-reliz-subd-duckdb"},"modified":"2024-06-04T21:39:58","modified_gmt":"2024-06-04T19:39:58","slug":"pervyj-stabilnyj-reliz-subd-duckdb","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/pervyj-stabilnyj-reliz-subd-duckdb","title":{"rendered":"Premi\u00e8re version stable du SGBD DuckDB","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Apr\u00e8s six ans de d\u00e9veloppement, la version 1.0 de la base de donn\u00e9es DuckDB est pr\u00e9sent\u00e9e, positionn\u00e9e comme une alternative \u00e0 SQLite pour les requ\u00eates analytiques. DuckDB combine des caract\u00e9ristiques de SQLite, telles que sa compacit\u00e9, sa disponibilit\u00e9 sous forme de biblioth\u00e8que embarqu\u00e9e, le stockage de la base de donn\u00e9es dans un seul fichier et une interface CLI conviviale, avec des outils et des optimisations pour ex\u00e9cuter des requ\u00eates analytiques couvrant une grande partie des donn\u00e9es stock\u00e9es, par exemple en effectuant l'agr\u00e9gation de l'int\u00e9gralit\u00e9 du contenu des tables ou la fusion de plusieurs grandes tables. Le code du projet est \u00e9crit en C++ et est distribu\u00e9 sous licence MIT.     <\/p>\n<p>La version 1.0 est marqu\u00e9e comme le premier d\u00e9veloppement stable du projet, dont la pr\u00e9paration a principalement port\u00e9 sur l'am\u00e9lioration de la stabilit\u00e9, plut\u00f4t que sur l'augmentation des fonctionnalit\u00e9s. La nouvelle version fixe \u00e9galement le format de stockage des donn\u00e9es, pour lequel la compatibilit\u00e9 descendante est assur\u00e9e depuis la pr\u00e9c\u00e9dente version. Dans les futures versions, les d\u00e9veloppeurs pr\u00e9voient d'adopter une approche plus prudente quant \u00e0 l'ajout de nouvelles fonctionnalit\u00e9s et de veiller \u00e0 pr\u00e9server la compatibilit\u00e9 entre les versions, ainsi que de stabiliser le dialecte SQL et l'API C. Si une modification de la s\u00e9mantique SQL s'av\u00e8re n\u00e9cessaire \u00e0 l'avenir, les d\u00e9veloppeurs publieront \u00e0 l'avance un avertissement concernant les changements \u00e0 venir et fourniront des solutions de contournement pour maintenir la fonctionnalit\u00e9 de code existant.      <\/p>\n<p>DuckDB prend en charge un dialecte SQL \u00e9tendu, incluant des capacit\u00e9s suppl\u00e9mentaires pour traiter des requ\u00eates tr\u00e8s complexes et de longue dur\u00e9e. Par exemple, il est possible d'utiliser des types complexes (tableaux, structures, unions), ainsi que d'ex\u00e9cuter des sous-requ\u00eates corr\u00e9l\u00e9es arbitraires et imbriqu\u00e9es. L'ex\u00e9cution simultan\u00e9e de plusieurs requ\u00eates est prise en charge, tout comme l'ex\u00e9cution de requ\u00eates directement \u00e0 partir de fichiers au format CSV et Parquet. La prise en charge de l'importation depuis la base de donn\u00e9es PostgreSQL est \u00e9galement disponible.    <\/p>\n<p>En plus du code Shell provenant de SQLite, le projet utilise un parseur extrait de PostgreSQL, le composant Date Math de MonetDB, sa propre impl\u00e9mentation de fonctions de fen\u00eatre (bas\u00e9e sur l'algorithme Segment Tree Aggregation), un gestionnaire d'expressions r\u00e9guli\u00e8res bas\u00e9 sur la biblioth\u00e8que RE2, son propre optimiseur de requ\u00eates, un m\u00e9canisme de contr\u00f4le de concurrence multi-version (Multi-Version Concurrency Control), ainsi qu'un moteur d'ex\u00e9cution de requ\u00eates vectoris\u00e9 bas\u00e9 sur l'algorithme Hyper-Pipelining Query Execution, permettant de traiter de grands ensembles de valeurs en une seule op\u00e9ration.<br \/>\n<br \/>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61309\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0421\u0423\u0411\u0414 DuckDB 1.0, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c\u043e\u0439 \u043a\u0430\u043a \u0432\u0430\u0440\u0438\u0430\u043d\u0442 SQLite \u0434\u043b\u044f \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432. DuckDB \u0441\u043e\u0447\u0435\u0442\u0430\u0435\u0442 \u0442\u0430\u043a\u0438\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 SQLite, \u043a\u0430\u043a \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u043e\u0441\u0442\u044c, \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0432 \u0444\u043e\u0440\u043c\u0435 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438, \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u0435 \u0411\u0414 \u0432 \u043e\u0434\u043d\u043e\u043c \u0444\u0430\u0439\u043b\u0435 \u0438 \u0443\u0434\u043e\u0431\u043d\u044b\u0439 CLI-\u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441, \u0441\u043e \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430\u043c\u0438 \u0438 \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u044f\u043c\u0438 \u0434\u043b\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0430\u043d\u0430\u043b\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0445 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432, \u043e\u0445\u0432\u0430\u0442\u044b\u0432\u0430\u044e\u0449\u0438\u0445 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u0443\u044e \u0447\u0430\u0441\u0442\u044c \u0445\u0440\u0430\u043d\u0438\u043c\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u044e\u0449\u0438\u0445 \u0430\u0433\u0440\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0432\u0441\u0435\u0433\u043e \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-116338","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043b\u0435\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0421\u0423\u0411\u0414 DuckDB 1.0, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c\u043e\u0439 \u043a\u0430\u043a \u0432\u0430\u0440\u0438\u0430\u043d\u0442 SQLite \u0434\u043b\u044f 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