{"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\/sl\/blog\/news\/vypusk-subd-sqlite-3-45","title":{"rendered":"Izdaja DBMS SQLite 3.45","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Objavljen je izdan SQLite 3.45, lagane SGBD, koja je predstavljena kao dinami\u010dka biblioteka. Kod SQLite-a se distribuira kao javno dobro (public domain), \u0161to zna\u010di da se mo\u017ee koristiti bez ograni\u010denja i besplatno u razne svrhe. Finansijsku podr\u0161ku razvoju SQLite-a pru\u017ea posebno formirani konzorcijum, u kojem su uklju\u010dene kompanije kao \u0161to su Bentley, Bloomberg, Expensify i Navigation Data Standard.    <\/p>\n<p>Glavne spremembe:  <\/p>\n<ul>\n<li class=\"l\"> Sve SQL funkcije za rad sa JSON formatom su prepisane i prevedene na novi unutra\u0161nji format JSONB stabla, koje se serializuje i mo\u017ee se \u010duvati u bazi podataka kako bi se izbeglo ponovo parsiranje prilikom kori\u0161\u0107enja JSON vrednosti. Nove verzije funkcija za generisanje JSON-a sada generi\u0161u binarni format JSONB umesto tekstualnog. U funkciju json_valid() dodat je opcioni drugi argument, putem kojeg se mo\u017ee odrediti bitna maska koja defini\u0161e karakteristike ispravnog JSON-a (na primer, kada se koristi 0x04, ispravnim \u0107e se smatrati blob JSONB, kada se koristi 0x01 tekstualni JSON u RFC-8259 formatu, a kada se koristi 0x05 oba varijante).\n<li class=\"l\"> U virtuelnu tabelu FTS5, koja se koristi za puntekstualno pretra\u017eivanje, dodata je opcija tokendata, koja omogu\u0107ava kori\u0161\u0107enje sopstvenih tokenizatora.\n<li class=\"l\"> Privzeto je vklju\u010dena optimizacija SQLITE_DIRECT_OVERFLOW_READ, ki omogo\u010da branje overflow-strani, ki so ve\u010dje od standardne velikosti strani b-tree, neposredno iz datoteke, mimo predpomnilnika. Za izklop pri gradnji lahko uporabite mo\u017enost '-DSQLITE_DIRECT_OVERFLOW_READ=0'.\n<li class=\"l\"> U planeru zahteva pobolj\u0161ana je efikasnost optimizacije tranzitivnih ograni\u010denja (transitive constraint) i unapre\u0111eno je ignorisanje indeksa koji su ocenjeni kao niskokvalitetni tokom izvr\u0161avanja operacije ANALYZE.\n<li class=\"l\"> V ukazni vrstici je izbolj\u0161ano prikazovanje vsebine v kodiranju UTF-8 na platformi Windows. Zagotovljeno je samodejno prepoznavanje uporabe CLI-vmesnika pri predvajanju skriptov '.dump' in ustrezne spremembe v nastavitvah, kot so '.dbconfig defensive off' in '.dbconfig dqs_dll on'.\n<li class=\"l\"> U SQL funkcijama definisanim na strani aplikacije dodata je osobina SQLITE_RESULT_SUBTYPE, koja omogu\u0107ava pozivanje funkcije sqlite3_result_subtype() za inspekciju podtipova argumenata.      <\/ul>\n<p>Dodatno lahko omenimo razvoj novega na\u010dina vodenja transakcijskega dnevnika v eksperimentalnih razli\u010dicah SQLite \u2014 WAL2 ('PRAGMA journal_mode = wal2'), pri katerem se uporabljata dva wal-datoteka ('database-wal' in 'database-wal2') namesto ene. Pri pisanju podatkov v bazo se nova data dodajajo v prvo wal-datoteko. \u010ce prva wal-datoteka dose\u017ee dovolj veliko velikost, se preklopi na pisanje v drugo datoteko. Po preklopu na drugo wal-datoteko prva postane dostopna za potrditev sprememb (checkpoint) in prepisovanje. Ustrezno, ko druga wal-datoteka dose\u017ee veliko velikost, se preklopi nazaj na prvo in tako naprej, kar re\u0161i te\u017eavo z nekontroliranim pove\u010devanjem wal-datoteke v situacijah, ko dolgo ne pride do potrditve transakcije ali se izvajajo dolgotrajni procesi branja.<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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