{"id":168285,"date":"2026-04-10T11:12:04","date_gmt":"2026-04-10T09:12:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-subd-sqlite-3-53"},"modified":"2026-04-10T11:12:04","modified_gmt":"2026-04-10T09:12:04","slug":"vypusk-subd-sqlite-3-53","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-subd-sqlite-3-53","title":{"rendered":"Vyd\u00e1n\u00ed datab\u00e1zov\u00e9ho syst\u00e9mu SQLite 3.53","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl zve\u0159ejn\u011bn release SQLite 3.53, lehk\u00e9ho RDBMS, dod\u00e1van\u00e9ho jako dynamick\u00e1 knihovna. Verze 3.52 byla zru\u0161ena. K\u00f3d SQLite je vyv\u00edjen jako ve\u0159ejn\u00e9 vlastnictv\u00ed, co\u017e znamen\u00e1, \u017ee m\u016f\u017ee b\u00fdt pou\u017e\u00edv\u00e1n bez omezen\u00ed a zdarma pro jak\u00e9koli \u00fa\u010dely. Finan\u010dn\u00ed podporu v\u00fdvoj\u00e1\u0159\u016f SQLite poskytuje speci\u00e1ln\u011b vytvo\u0159en\u00fd konsorcium.     <\/p>\n<p>Hlavn\u00ed zm\u011bny:  <\/p>\n<ul>\n<li class=\"l\"> Byl opraven probl\u00e9m, kter\u00fd vedl k po\u0161kozen\u00ed datab\u00e1ze. Probl\u00e9m byl p\u0159\u00edtomen od verze SQLite 3.7.0 (2010), t\u00fdkal se datab\u00e1z\u00ed v re\u017eimu WAL (Write-Ahead Logging) a projevoval se kv\u016fli stavu z\u00e1vodu p\u0159i sou\u010dasn\u00e9m otev\u00edr\u00e1n\u00ed dvou nebo v\u00edce p\u0159ipojen\u00ed k datab\u00e1zi, kter\u00e9 se pokou\u0161ely zapisovat nebo potvrzovat transakce ve stejn\u00e9m instanci datab\u00e1ze. Tvrd\u00ed se, \u017ee k selh\u00e1n\u00ed vedouc\u00ed ud\u00e1losti se vyskytuje velmi z\u0159\u00eddka a poda\u0159ilo se jej zopakovat pouze ve speci\u00e1ln\u011b vytvo\u0159en\u00e9m testovac\u00edm sc\u00e9n\u00e1\u0159i.\n<li class=\"l\"> V t\u00fdmu &#171;ALTER TABLE&#187; je povoleno odstra\u0148ovat kontroly &#171;NOT NULL&#187; a &#171;CHECK&#187;.\n<li class=\"l\"> Byl p\u0159id\u00e1n p\u0159\u00edkaz &#171;REINDEX EXPRESSIONS&#187; pro rekonstrukci index\u016f zalo\u017een\u00fdch na v\u00fdrazech, kde se jako prvek indexu pou\u017e\u00edv\u00e1 funkce na sloupci nebo operace na sloupc\u00edch. Tento p\u0159\u00edkaz m\u016f\u017ee b\u00fdt pou\u017eit k obnoven\u00ed zastaral\u00fdch index\u016f.\n<li class=\"l\"> Uvnit\u0159 do\u010dasn\u00fdch trigger\u016f, kter\u00e9 jsou vytv\u00e1\u0159eny p\u0159\u00edkazem &#171;CREATE TEMP TRIGGER&#187; a aplikov\u00e1ny na tabulky v jin\u00fdch DBS, je povolena zm\u011bna tabulek nebo dotazy na data z tabulek.\n<li class=\"l\"> V p\u0159\u00edkazu &#171;VACUUM INTO&#187; s uveden\u00edm c\u00edlov\u00e9ho souboru p\u0159es URL byla implementov\u00e1na mo\u017enost &#171;reserve=N&#187; k ur\u010den\u00ed po\u010dtu vytv\u00e1\u0159en\u00fdch z\u00e1loh DBS.\n<li class=\"l\"> Byly implementov\u00e1ny nov\u00e9 SQL funkce json_array_insert() a jsonb_array_insert() pro vkl\u00e1d\u00e1n\u00ed prvk\u016f do JSON pol\u00ed.\n<li class=\"l\"> Byla p\u0159id\u00e1na a aktivov\u00e1na v utility p\u0159\u00edkazov\u00e9ho \u0159\u00e1dku knihovna QRF (Query Result Formatter) pro form\u00e1tov\u00e1n\u00ed v\u00fdsledk\u016f vykon\u00e1v\u00e1n\u00ed SQL dotaz\u016f do \u010diteln\u00e9ho form\u00e1tu.\n<li class=\"l\"> Zm\u011bny v utility p\u0159\u00edkazov\u00e9ho \u0159\u00e1dku:\n<ul>\n<li class=\"l\"> P\u0159\u00edkaz &#171;.mode&#187; byl v\u00fdrazn\u011b roz\u0161\u00ed\u0159en.\n<li class=\"l\">  Bylo vylep\u0161eno generov\u00e1n\u00ed v\u00fdstupu, nap\u0159\u00edklad byla v\u00fdchoz\u00ed zobrazen\u00ed ohrani\u010den\u00ed zahrnuta a \u010d\u00edseln\u00e9 hodnoty se nyn\u00ed zarovn\u00e1vaj\u00ed doprava p\u0159i tabulkov\u00e9m v\u00fdstupu.\n<li class=\"l\"> Bylo zaji\u0161t\u011bno ignorov\u00e1n\u00ed znak\u016f &#171;;&#187; po p\u0159\u00edkazech.\n<li class=\"l\"> Obsah zadan\u00fdch soubor\u016f v p\u0159\u00edkazov\u00e9m \u0159\u00e1dku s p\u0159\u00edponami *.sql a *.txt se nyn\u00ed \u010dte a interpretuje jako sady SQL v\u00fdrazu a dot p\u0159\u00edkaz\u016f.\n<li class=\"l\"> Do p\u0159\u00edkazu &#171;.timer&#187; byla p\u0159id\u00e1na podpora hodnoty &#171;once&#187; pro pou\u017eit\u00ed \u010dasova\u010de pouze na n\u00e1sleduj\u00edc\u00ed SQL v\u00fdraz.\n<li class=\"l\">  Do p\u0159\u00edkazu &#171;.progress&#187; byla p\u0159id\u00e1na mo\u017enost &#171;&#8212;timeout S&#187; pro n\u00e1siln\u00e9 p\u0159eru\u0161en\u00ed SQL v\u00fdrazu po vypr\u0161en\u00ed \u010dasov\u00e9ho limitu.\n<li class=\"l\"> V p\u0159\u00edkazu &#171;.indexes&#187; bylo zm\u011bn\u011bno chov\u00e1n\u00ed vzor\u016f, kter\u00e9 se nyn\u00ed aplikuj\u00ed na n\u00e1zvy index\u016f, nikoli na n\u00e1zvy indexovan\u00fdch tabulek.      <\/ul>\n<li class=\"l\"> Byly provedeny optimalizace v pl\u00e1nova\u010di dotaz\u016f, kter\u00e9 urychlily pr\u00e1ci se slu\u010dov\u00e1n\u00edm tabulek a operacemi EXCEPT, INTERSECT a UNION.\n<li class=\"l\"> Byla zv\u00fd\u0161ena v\u00fdkonnost funkc\u00ed pro p\u0159evod \u010d\u00edsel s plovouc\u00ed desetinnou \u010d\u00e1rkou do textov\u00e9ho form\u00e1tu.\n<li class=\"l\"> Do implementace kompilovan\u00e9 do mezipam\u011bti WebAssembly byla p\u0159id\u00e1na VFS &#171;opfs-wl&#187;, identick\u00e1 VFS &#171;opfs&#187;, ale pou\u017e\u00edvaj\u00edc\u00ed API Web Locks pro pr\u00e1ci se z\u00e1mky.\n<li class=\"l\"> Do n\u00e1stroje sqlite3_rsync byla p\u0159id\u00e1na volba &#171;-p|&#8212;port&#187;.\n<li class=\"l\"> Podpora platformy Windows RT byla ukon\u010dena.        <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65182\">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 3.53, \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. \u0412\u044b\u043f\u0443\u0441\u043a 3.52 \u0431\u044b\u043b \u043e\u0442\u043c\u0435\u043d\u0451\u043d. \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 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