{"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\/sv\/blog\/news\/vypusk-subd-sqlite-3-53","title":{"rendered":"Utg\u00e5ngen av databashanteraren SQLite 3.53","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Utgivet version 3.53 av SQLite, en l\u00e4ttviktig DBMS som \u00e4r utformad som en ansluten biblioteksfil. Version 3.52 drogs tillbaka. Koden f\u00f6r SQLite distribueras som offentlig egendom, vilket inneb\u00e4r att den kan anv\u00e4ndas utan begr\u00e4nsningar och kostnadsfritt f\u00f6r alla \u00e4ndam\u00e5l. Den ekonomiska st\u00f6det till SQLite-utvecklarna ges av en s\u00e4rskilt bildad konsortium.     <\/p>\n<p>Huvudsakliga f\u00f6r\u00e4ndringar:  <\/p>\n<ul>\n<li class=\"l\"> Ett fel som ledde till korruption av databasen har \u00e5tg\u00e4rdats. Problemet har funnits sedan version 3.7.0 (2010), p\u00e5verkade databaser i WAL-l\u00e4ge (Write-Ahead Logging) och upptr\u00e4dde p\u00e5 grund av en race condition n\u00e4r tv\u00e5 eller flera anslutningar samtidigt \u00f6ppnades till databasen som f\u00f6rs\u00f6kte skriva eller bekr\u00e4fta transaktioner i en och samma databas. Det p\u00e5st\u00e5s att den felande situationen intr\u00e4ffar mycket s\u00e4llan och har bara kunnat \u00e5terskapas i ett specially created testfall.\n<li class=\"l\"> I teamet &#171;ALTER TABLE&#187; \u00e4r det till\u00e5tet att ta bort kontroller &#171;NOT NULL&#187; och &#171;CHECK&#187;.\n<li class=\"l\"> Kommandot &#171;REINDEX EXPRESSIONS&#187; har lagts till f\u00f6r att \u00e5teruppbygga index baserat p\u00e5 uttryck d\u00e4r en funktion \u00f6ver en kolumn eller operationer \u00f6ver kolumner anv\u00e4nds som indexelement. Kommandot kan anv\u00e4ndas f\u00f6r att \u00e5terst\u00e4lla stagnerade index.\n<li class=\"l\"> Inuti tempor\u00e4ra triggers som skapas av kommandot &#171;CREATE TEMP TRIGGER&#187; och till\u00e4mpas p\u00e5 tabeller i andra databaser \u00e4r det till\u00e5tet att \u00e4ndra tabeller eller h\u00e4mta data fr\u00e5n tabeller.\n<li class=\"l\"> I kommandot &#171;VACUUM INTO&#187; har anv\u00e4ndningen av parametern &#171;reserve=N&#187; implementerats vid angivande av m\u00e5lfilen via URL f\u00f6r att best\u00e4mma antalet skapade s\u00e4kerhetskopior av databasen.\n<li class=\"l\"> Nya SQL-funktioner json_array_insert() och jsonb_array_insert() har implementerats f\u00f6r att infoga element i JSON-matriser.\n<li class=\"l\"> Biblioteket QRF (Query Result Formatter) har lagts till och aktiverats i kommandoradsverktyget f\u00f6r att formatera resultaten av SQL-fr\u00e5gor till l\u00e4sbara format.\n<li class=\"l\"> \u00c4ndringar i kommandoradsverktyget:\n<ul>\n<li class=\"l\"> Kommandot &#171;.mode&#187; har betydligt utvidgats.\n<li class=\"l\">  Utformningen av utskrifter har f\u00f6rb\u00e4ttrats, till exempel har det automatisk aktiverats ritning av ramar, och numeriska v\u00e4rden justeras nu till h\u00f6ger vid tabellerad utskrift.\n<li class=\"l\"> Det har s\u00e4kerst\u00e4llts att tecken &#171;;&#187; ignoreras efter kommandon.\n<li class=\"l\"> Inneh\u00e5llet i angivna filer i kommandoraden med \u00e4ndelserna *.sql och *.txt l\u00e4ses och tolkas nu som upps\u00e4ttningar av SQL-uttryck och dot-kommandon.\n<li class=\"l\"> I kommandot &#171;.timer&#187; har st\u00f6d f\u00f6r v\u00e4rdet &#171;once&#187; lagts till f\u00f6r att till\u00e4mpa tidtagaren endast p\u00e5 n\u00e4sta SQL-uttryck.\n<li class=\"l\">  I kommandot &#171;.progress&#187; har alternativet &#171;&#8212;timeout S&#187; lagts till f\u00f6r att tvinga avbrott av SQL-uttrycket efter att tidsgr\u00e4nsen har passerat.\n<li class=\"l\"> I kommandot &#171;.indexes&#187; har beteendet f\u00f6r mallar \u00e4ndrats, s\u00e5 att de nu till\u00e4mpas p\u00e5 namn av index och inte p\u00e5 namn av indexerade tabeller.      <\/ul>\n<li class=\"l\"> Optimeringar har genomf\u00f6rts i fr\u00e5geplaneraren f\u00f6r att p\u00e5skynda sammanslagning av tabeller och operationerna EXCEPT, INTERSECT och UNION.\n<li class=\"l\"> Prestandan f\u00f6r funktioner som omvandlar flyttal till textrepresentation har f\u00f6rb\u00e4ttrats.\n<li class=\"l\"> I implementeringen som kompileras till mellanliggande WebAssembly-kod har VFS &#171;opfs-wl&#187; lagts till, identisk med VFS &#171;opfs&#187;, men som anv\u00e4nder API:er f\u00f6r Web Locks f\u00f6r att arbeta med l\u00e5s.\n<li class=\"l\"> Alternativet &#171;-p|&#8212;port&#187; har lagts till i verktyget sqlite3_rsync.\n<li class=\"l\"> St\u00f6det f\u00f6r Windows RT-plattformen har upph\u00f6rt.        <\/ul>\n<p>K\u00e4lla: <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 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