{"id":82740,"date":"2020-05-24T19:42:08","date_gmt":"2020-05-24T17:42:08","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/reliz-subd-sqlite-3-32-proekt-duckdb-razvivaet-variant-sqlite-dlya-analiticheskih-zaprosov"},"modified":"2020-05-24T19:42:08","modified_gmt":"2020-05-24T17:42:08","slug":"reliz-subd-sqlite-3-32-proekt-duckdb-razvivaet-variant-sqlite-dlya-analiticheskih-zaprosov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/reliz-subd-sqlite-3-32-proekt-duckdb-razvivaet-variant-sqlite-dlya-analiticheskih-zaprosov","title":{"rendered":"Wydanie bazy danych SQLite 3.32. Projekt DuckDB rozwija wersj\u0119 SQLite dla zapyta\u0144 analitycznych","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/changes.html\">Opublikowano<\/a><\/noindex> wydanie <noindex><a rel=\"nofollow\" href=\"http:\/\/sqlite.org\/\">SQLite 3.32.0<\/a><\/noindex>, lekkiej DBMS, sformatowanej jako biblioteka do\u0142\u0105czana. Kod SQLite jest rozpowszechniany jako w\u0142asno\u015b\u0107 publiczna, co oznacza, \u017ce mo\u017ce by\u0107 wykorzystywany bez ogranicze\u0144 i bezp\u0142atnie do wszelkich cel\u00f3w. Wsparcie finansowe dla tw\u00f3rc\u00f3w SQLite zapewnia specjalnie utworzony konsorcjum, do kt\u00f3rego nale\u017c\u0105 takie firmy jak Adobe, Oracle, Mozilla, Bentley i Bloomberg. <\/p>\n<p>Podstawowe <noindex><a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/releaselog\/3_32_0.html\">zmiany<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> Zrealizowano <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/lang_analyze.html#approx\">przybli\u017cony<\/a><\/noindex> wersja komendy ANALYZE, kt\u00f3ra pozwala w bardzo du\u017cych bazach danych na cz\u0119\u015bciowe zebranie statystyk, bez pe\u0142nego skanowania indeks\u00f3w. Ograniczenie liczby rekord\u00f3w podczas skanowania jednego indeksu jest ustawiane za pomoc\u0105 nowej dyrektywy &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/pragma.html#pragma_analysis_limit\">PRAGMA analysis_limit<\/a><\/noindex>&#171;.\n<li class=\"l\"> Dodano now\u0105 wirtualn\u0105 tabel\u0119 &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/bytecodevtab.html\">bytecode<\/a><\/noindex>&#171;, w kt\u00f3rej przedstawiono informacje o <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/opcode.html\">bajtkodzie<\/a><\/noindex> wcze\u015bniej przygotowanych wyra\u017ce\u0144 (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/c3ref\/stmt.html\">prepared statement<\/a><\/noindex>).\n<li class=\"l\"> Dodano warstw\u0119 VFS <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/cksumvfs.html\">checksum<\/a><\/noindex>, kt\u00f3ra dodaje 8-bajtowe sumy kontrolne na ko\u0144cu ka\u017cdej strony danych w bazie danych i sprawdza je przy ka\u017cdym odczycie z bazy. Warstwa pozwala wykrywa\u0107 uszkodzenia bazy danych spowodowane przypadkowym uszkodzeniem bit\u00f3w w urz\u0105dzeniach pami\u0119ci.\n<li class=\"l\"> Dodano now\u0105 funkcj\u0119 SQL <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/lang_corefunc.html#iif\">iif(X,Y,Z)<\/a><\/noindex>, kt\u00f3ra zwraca warto\u015b\u0107 Y, je\u015bli wyra\u017cenie X jest prawdziwe, lub Z w przeciwnym razie.\n<li class=\"l\"> W wyra\u017ceniach INSERT i UPDATE teraz zawsze <noindex><a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/src\/info\/86ba67afafded936\">jest stosowane<\/a><\/noindex> zwi\u0105zanie typ\u00f3w kolumn (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/datatype3.html#affinity\">column affinity<\/a><\/noindex>) przed obliczeniem warunk\u00f3w w bloku <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/lang_createtable.html#ckconst\">CHECK<\/a><\/noindex>.\n<li class=\"l\"> Limit liczby parametr\u00f3w zwi\u0119kszono z 999 do 32766.\n<li class=\"l\"> Dodano rozszerzenie <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/uintcseq.html\">UINT collating sequence<\/a><\/noindex> z implementacj\u0105 sortowania sekwencji, kt\u00f3re uwzgl\u0119dniaj\u0105 liczby ca\u0142kowite w tek\u015bcie do sortowania go w porz\u0105dku liczbowym.\n<li class=\"l\"> W interfejsie linii polece\u0144 do komendy &#171;.import&#187; dodano opcje &#171;&#8212;csv&#187;, &#171;&#8212;ascii&#187; oraz &#171;&#8212;skip&#187;. W komendzie &#171;.dump&#187; zezwolono na u\u017cywanie kilku szablon\u00f3w LIKE z scaleniem wszystkich tabel odpowiadaj\u0105cych podanym maskom. Dodano komend\u0119 &#171;.oom&#187; dla wersji debuguj\u0105cych. Do komend &#171;.excel&#187;, &#171;.output&#187; i &#171;.once&#187; dodano opcj\u0119 &#171;&#8212;bom&#187;. Do komendy &#171;.filectrl&#187; dodano opcj\u0119 &#171;&#8212;schema&#187;.\n<li class=\"l\"> Wyra\u017cenie ESCAPE podane z operatorem LIKE teraz nadpisuje znaki wildcard, co odpowiada zachowaniu PostgreSQL.\n<\/ul>\n<p>Dodatkowo mo\u017cna zauwa\u017cy\u0107 rozw\u00f3j nowej bazy danych <noindex><a rel=\"nofollow\" href=\"https:\/\/www.duckdb.org\/\">DuckDB<\/a><\/noindex>, w kt\u00f3rej tworzony jest wariant SQLite, zoptymalizowany do wykonywania <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/OLAP\">zapytania analityczne<\/a><\/noindex>.<br \/>\nOpr\u00f3cz kodu pow\u0142oki z SQLite, projekt wykorzystuje wyodr\u0119bniony parser z PostgreSQL, komponent Date Math z <noindex><a rel=\"nofollow\" href=\"https:\/\/www.monetdb.org\/\">MonetDB<\/a><\/noindex>, w\u0142asn\u0105 implementacj\u0119 funkcji okna (opart\u0105 na algorytmie Segment Tree Aggregation), wektorowy silnik wykonywania zapyta\u0144 (oparty na algorytmie Hyper-Pipelining Query Execution), obs\u0142ugiwacz wyra\u017ce\u0144 regularnych na podstawie biblioteki <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=25765\">RE2<\/a><\/noindex>, w\u0142asny optymalizator zapyta\u0144 i mechanizm MVCC zarz\u0105dzania jednoczesnym wykonywaniem zada\u0144 (Multi-Version Concurrency Control).<br \/>\nKod projektu <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cwida\/duckdb\">rozpowszechniany<\/a><\/noindex> na licencji MIT. Rozw\u00f3j wci\u0105\u017c znajduje si\u0119 na etapie <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/cwida\/duckdb\/releases\">stworzeniu<\/a><\/noindex> wyda\u0144 eksperymentalnych.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53018\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 SQLite 3.32.0, \u043b\u0435\u0433\u043a\u043e\u0432\u0435\u0441\u043d\u043e\u0439 \u0421\u0423\u0411\u0414, \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0439 \u0432 \u0432\u0438\u0434\u0435 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0435\u043c\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438. \u041a\u043e\u0434 SQLite \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u043e\u0431\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0434\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 (public domain), \u0442.\u0435. \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0431\u0435\u0437 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u0439 \u0438 \u0431\u0435\u0437\u0432\u043e\u0437\u043c\u0435\u0437\u0434\u043d\u043e \u0432 \u043b\u044e\u0431\u044b\u0445 \u0446\u0435\u043b\u044f\u0445. \u0424\u0438\u043d\u0430\u043d\u0441\u043e\u0432\u0443\u044e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 SQLite \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0441\u043e\u0437\u0434\u0430\u043d\u043d\u044b\u0439 \u043a\u043e\u043d\u0441\u043e\u0440\u0446\u0438\u0443\u043c, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u0445\u043e\u0434\u044f\u0442 \u0442\u0430\u043a\u0438\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438, \u043a\u0430\u043a Adobe, Oracle, Mozilla, Bentley \u0438 Bloomberg. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0420\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d \u0430\u043f\u043f\u0440\u043e\u043a\u0441\u0438\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u043a\u043e\u043c\u0430\u043d\u0434\u044b [&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-82740","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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