{"id":147391,"date":"2025-11-05T17:11:54","date_gmt":"2025-11-05T15:11:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-subd-sqlite-3-51"},"modified":"2025-11-05T17:11:54","modified_gmt":"2025-11-05T15:11:54","slug":"vypusk-subd-sqlite-3-51","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/vypusk-subd-sqlite-3-51","title":{"rendered":"Vydanie datab\u00e1zov\u00e9ho syst\u00e9mu SQLite 3.51","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bol spusten\u00fd release SQLite 3.51, \u013eahkej SODB, ktor\u00e1 je dostupn\u00e1 ako kni\u017enica. K\u00f3d SQLite je distribuovan\u00fd ako verejn\u00e1 dom\u00e9na (public domain), t.j. m\u00f4\u017ee by\u0165 pou\u017e\u00edvan\u00fd bez obmedzen\u00ed a bezplatne na ak\u00fdko\u013evek \u00fa\u010del. Finan\u010dn\u00fa podporu pre v\u00fdvoj\u00e1rov SQLite zabezpe\u010duje \u0161peci\u00e1lne zriaden\u00fd konzorcium.     <\/p>\n<p>Hlavn\u00e9 zmeny:  <\/p>\n<ul>\n<li class=\"l\"> Pridan\u00e9 nov\u00e9 JSON-funkcie jsonb_each() a jsonb_tree(), ktor\u00e9 sa od predt\u00fdm dostupn\u00fdch funkci\u00ed json_each() a json_tree() l\u00ed\u0161ia t\u00fdm, \u017ee vracaj\u00fa hodnotu JSONB pre d\u00e1ta typu pole alebo objekt.\n<li class=\"l\"> K\u00f3d roz\u0161\u00edren\u00ed carray a percentile bol presunut\u00fd do z\u00e1kladn\u00e9ho s\u00faboru &#171;sqlite3.c&#187; so zabudovan\u00fdm k\u00f3dom SQLite. Predvolene s\u00fa tieto doplnky vypnut\u00e9 a vy\u017eaduj\u00fa zadanie parametrov pri zostaven\u00ed &#171;-DSQLITE_ENABLE_CARRAY&#187; a &#171;-DSQLITE_ENABLE_PERCENTILE&#187;.\n<li class=\"l\"> Vylep\u0161en\u00e9 rozhranie na pou\u017eitie SQLite v skriptoch jazyka Tcl. Do pr\u00edkazu &#171;eval&#187; bol pridan\u00fd flag &#171;-asdict&#187; na v\u00fdstup re\u0165azcov s pou\u017eit\u00edm typu &#171;dict&#187; namiesto &#171;array&#187;. Pridan\u00e1 mo\u017enos\u0165 preru\u0161i\u0165 pou\u017e\u00edvate\u013esk\u00e9 funkcie pre vr\u00e1tenie hodnoty NULL.\n<li class=\"l\"> Zmeny v pr\u00edkazovom rozhran\u00ed:\n<ul>\n<li class=\"l\"> Presnos\u0165 pr\u00edkazu &#171;.timer&#187; bola zv\u00fd\u0161en\u00e1 na mikrosekundy.\n<li class=\"l\"> V re\u017eimoch form\u00e1tovania &#171;box&#187; a &#171;column&#187; bola implementovan\u00e1 podpora znakov s dvojitou \u0161\u00edrkou.\n<li class=\"l\"> Pr\u00edkaz &#171;.imposter&#187; teraz m\u00f4\u017ee poskytova\u0165 v re\u017eime len na \u010d\u00edtanie imposter-tablice (umo\u017e\u0148uj\u00face pr\u00edstup k \u00fadajom v indexe ako k tabuli), pracuj\u00face s oper\u00e1ciou VACUUM a nevy\u017eaduj\u00face spustenie s flagom &#171;&#8212;unsafe-testing&#187;.\n<li class=\"l\"> Do n\u00e1stroja sqlite a pr\u00edkazu &#171;.open&#187; bola pridan\u00e1 mo\u017enos\u0165 &#171;&#8212;ifexists&#187;.\n<li class=\"l\"> Maxim\u00e1lna \u0161\u00edrka riadku nastaven\u00e1 pr\u00edkazom &#171;.width&#187; je obmedzen\u00e1 na 30000 znakov.   <\/ul>\n<li class=\"l\"> Boli vykonan\u00e9 optimaliz\u00e1cie v\u00fdkonu:\n<ul>\n<li class=\"l\"> Zn\u00ed\u017een\u00e1 z\u00e1\u0165a\u017e na CPU pri zafixovan\u00ed transakci\u00ed, obmedzen\u00fdch na \u010d\u00edtanie;\n<li class=\"l\"> Vylep\u0161en\u00e9 ur\u010denie oper\u00e1ci\u00ed sp\u00e1jania (JOIN), ktor\u00e9 nevracaj\u00fa riadky kv\u00f4li tomu, \u017ee jedna alebo viac tabuliek neobsahuje riadky;\n<li class=\"l\"> Vyl\u00fa\u010den\u00e9 vykon\u00e1vanie skalarov\u00fdch poddotazov, ktor\u00e9 nemaj\u00fa vplyv na v\u00fdsledok;\n<li class=\"l\"> Pr\u00e1ca oknov\u00fdch funkci\u00ed v dopytoch s v\u00fdrazom &#171;BETWEEN \ud83d\ude21 FOLLOWING AND :y FOLLOWING&#187; a ve\u013emi ve\u013ekou hodnotou &#171;:y&#187; bola zr\u00fdchlen\u00e1.   <\/ul>\n<li class=\"l\"> Pridan\u00e1 pragmatick\u00e1 &#171;PRAGMA wal_checkpoint=NOOP&#187; a funkcia API sqlite3_wal_checkpoint() na ulo\u017eenie zmien v WAL-\u017eurn\u00e1le.\n<li class=\"l\"> Do API boli pridan\u00e9 funkcie sqlite3_set_errmsg() a sqlite3_db_status64().\n<li class=\"l\"> V JavaScript\/WASM-verzii SQLite bola implementovan\u00e1 podpora kompil\u00e1cie do form\u00e1tu WebAssembly s 64-bitov\u00fdmi ukazovate\u013emi.\n<li class=\"l\"> Zv\u00fd\u0161en\u00e1 odolnos\u0165 vo\u010di po\u0161kodeniu datab\u00e1z v aplik\u00e1ci\u00e1ch, ktor\u00e9 uvo\u013e\u0148uj\u00fa POSIX z\u00e1mky prostredn\u00edctvom volania close().\n<li class=\"l\"> Zlep\u0161en\u00e1 podpora platformy VxWorks.      <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64186\">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 3.51, 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\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. \u041e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u043e\u0432\u044b\u0435 JSON-\u0444\u0443\u043d\u043a\u0446\u0438\u0438 jsonb_each() \u0438 jsonb_tree(), \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0442\u0441\u044f \u043e\u0442 \u0440\u0430\u043d\u0435\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 json_each() \u0438 json_tree() \u0442\u0435\u043c, [&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-147391","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 SQLite 3.51, \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 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