{"id":113031,"date":"2024-01-21T17:28:02","date_gmt":"2024-01-21T15:28:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-subd-sqlite-3-45"},"modified":"2024-01-21T17:28:02","modified_gmt":"2024-01-21T15:28:02","slug":"vypusk-subd-sqlite-3-45","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/vypusk-subd-sqlite-3-45","title":{"rendered":"Izdanje DBMS SQLite 3.45","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Objavljen je SQLite 3.45, lagani sustav za upravljanje bazama podataka koji dolazi u obliku priklju\u010dne biblioteke. Izvorni kod SQLite-a dostupno je kao javno dobro, \u0161to zna\u010di da ga se mo\u017ee koristiti bez ograni\u010denja i besplatno u bilo koje svrhe. Financijsku podr\u0161ku razvojnim timovima SQLite-a pru\u017ea poseban konzorcij, u kojem su uklju\u010dene tvrtke kao \u0161to su Bentley, Bloomberg, Expensify i Navigation Data Standard.    <\/p>\n<p>Glavne promjene:  <\/p>\n<ul>\n<li class=\"l\"> Sve SQL funkcije za rad s formatom JSON su prepisane i prevedene u novi unutarnji format stabla razdvajanja JSONB, koji se serijalizira i mo\u017ee se pohraniti u bazu podataka kako bi se izbjeglo ponovno razdvajanje pri kori\u0161tenju JSON vrijednosti. Nove verzije funkcija koje generiraju JSON sada proizvode binarni format JSONB umjesto tekstualnog. U funkciju json_valid() dodan je neobavezan drugi argument pomo\u0107u kojeg se mo\u017ee postaviti bitna maska koja definira karakteristike ispravnog JSON-a (na primjer, kada se postavi 0x04, ispravnim \u0107e se smatrati blob JSONB, kada se postavi 0x01, tekstualni JSON u formatu RFC-8259, a kada se postavi 0x05, oba varijante).\n<li class=\"l\"> U virtualnu tablicu FTS5, koja se koristi za pretra\u017eivanje punim tekstom, dodana je opcija tokendata koja omogu\u0107ava kori\u0161tenje vlastitih tokenizatora.\n<li class=\"l\"> Prema zadanim postavkama, optimizacija SQLITE_DIRECT_OVERFLOW_READ je uklju\u010dena, pri \u010demu se overflow-stranice, \u010dija je veli\u010dina ve\u0107a od standardne veli\u010dine b-tree stranice, \u010ditaju iz datoteke izravno, presko\u010div\u0161i predmemoriju. Za onemogu\u0107avanje tijekom gradnje mo\u017eete koristiti opciju '-DSQLITE_DIRECT_OVERFLOW_READ=0'.\n<li class=\"l\"> U planeru upita pobolj\u0161ana je u\u010dinkovitost optimizacije tranzitivnih ograni\u010denja i pobolj\u0161ano je ignoriranje indeksa koji su priznati kao niske kvalitete tijekom izvo\u0111enja operacije ANALYZE.\n<li class=\"l\"> U su\u010delju naredbene linije pobolj\u0161ano je prikazivanje sadr\u017eaja u UTF-8 kodiranju na Windows platformi. Osigurano je automatsko prepoznavanje kori\u0161tenja CLI su\u010delja prilikom izvo\u0111enja skripti '.dump' i uno\u0161enja odgovaraju\u0107ih promjena u postavke, poput '.dbconfig defensive off' i '.dbconfig dqs_dll on'.\n<li class=\"l\"> U korisni\u010dki definirane SQL funkcije dodana je svojstvo SQLITE_RESULT_SUBTYPE, koje omogu\u0107ava pozivanje funkcije sqlite3_result_subtype() za inspekciju podtipova argumenata.      <\/ul>\n<p>Dodatno, mo\u017ee se primijetiti razvoj u eksperimentalnim verzijama SQLite novog re\u017eima vo\u0111enja loga transakcija \u2014 WAL2 ('PRAGMA journal_mode = wal2'), pri \u010demu se koriste dva wal-datoteke ('database-wal' i 'database-wal2') umjesto jedne. Kada se podaci upisuju u bazu podataka, nova se podaci dodaju u prvu wal-datoteku. Ako prva wal-datoteka dostigne dovoljno veliku veli\u010dinu, prelazi se na upisivanje u drugu datoteku. Nakon prijelaza na drugu wal-datoteku, prva postaje dostupna za potvr\u0111ivanje promjena (checkpoint) i prepisivanje. Tako, kada druga wal-datoteka dostigne veliku veli\u010dinu, prelazi se na prvu itd., \u0161to rje\u0161ava problem nekontroliranog rasta wal-datoteke u situacijama kada se dugo ne potvr\u0111uje transakcija ili se izvode dugotrajni procesi \u010ditanja.<br \/>\n<br \/>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60460\">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 3.45, \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 Bentley, Bloomberg, Expensify \u0438 Navigation Data Standard. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0412\u0441\u0435 SQL-\u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0434\u043b\u044f [&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-113031","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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