{"id":55593,"date":"2020-01-24T00:00:00","date_gmt":"2020-01-23T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/reliz-subd-sqlite-3-31-s-podderzhkoj-generiruemyh-stolbtsov"},"modified":"2020-02-18T14:03:43","modified_gmt":"2020-02-18T11:03:43","slug":"reliz-subd-sqlite-3-31-s-podderzhkoj-generiruemyh-stolbtsov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sl\/blog\/news\/reliz-subd-sqlite-3-31-s-podderzhkoj-generiruemyh-stolbtsov","title":{"rendered":"Izdanje DBMS SQLite 3.31 sa podr\u0161kom za generisane kolone","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/changes.html\">Objavljeno<\/a><\/noindex> izdanje <noindex><a rel=\"nofollow\" href=\"http:\/\/sqlite.org\/\">SQLite 3.31.0<\/a><\/noindex>, lahka baza podatkov, predstavljena kot dinami\u010dna knji\u017enica. Koda SQLite je na voljo kot javno dobro, kar pomeni, da se lahko uporablja brez omejitev in brezpla\u010dno za vse namene. Razvoj SQLite financira posebni konzorcij, ki vklju\u010duje podjetja, kot so Adobe, Oracle, Mozilla, Bentley in Bloomberg. <\/p>\n<p>Glavne <noindex><a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/releaselog\/3_31_0.html\">spremembe<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> Dodana je podpora za <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/gencol.html\">generirane stolpce<\/a><\/noindex> (izra\u010dunatih kolona), koje omogu\u0107avaju da se prilikom kreiranja tabele defini\u0161e kolona \u010dija se vrednost automatski izra\u010dunava na osnovu sadr\u017eaja druge kolone. Generisane kolone mogu biti virtuelne (formiraju se u trenutku svakog pristupa) ili sa\u010duvane u bazi podataka (\u010duvaju se prilikom svake izmene povezanih kolona). Sadr\u017eaj generisanih kolona dostupan je samo u re\u017eimu \u010ditanja (izmena se vr\u0161i samo putem modifikacije vrednosti u drugoj koloni koja se koristi pri izra\u010dunavanju). Na primer:\n<p>   CREATE TABLE t1(<br \/>\n      a INTEGER PRIMARY KEY,<br \/>\n      b INT,<br \/>\n      c TEXT,<br \/>\n      d INT GENERATED ALWAYS AS (a*abs(b)) VIRTUAL,<br \/>\n      e TEXT GENERATED ALWAYS AS (substr(c,b,b+1)) STORED<br \/>\n   );<\/p>\n<li class=\"l\"> Dodate su PRAGMA <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/pragma.html#pragma_trusted_schema\">trusted_schema<\/a><\/noindex>, pode\u0161avanje <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/c3ref\/c_dbconfig_defensive.html#sqlitedbconfigtrustedschema\">SQLITE_DBCONFIG_TRUSTED_SCHEMA<\/a><\/noindex> in skupna opcija &#171;-DSQLITE_TRUSTED_SCHEMA&#187;, ki omogo\u010da upravljanje vklju\u010devanja za\u0161\u010dite pred <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52084\">napadi<\/a><\/noindex> modifikacije \u0161eme podataka u bazi podataka. Kada je za\u0161tita aktivna, kori\u0161\u0107enje SQL funkcija (koje nisu ozna\u010dene kao SQLITE_INNOCUOUS) u okida\u010dima, pogledima, CHECK izrazima i DEFAULT, indeksima i generisanim kolonama je ograni\u010deno. Tako\u0111e se onemogu\u0107ava kori\u0161\u0107enje virtuelnih tabela u okida\u010dima i pogledima, osim ako virtuelna tabela nije izri\u010dito deklarisana sa oznakom SQLITE_VTAB_INNOCUOUS.\n<li class=\"l\"> Implementirana je mogu\u0107nost dodeljivanja odre\u0111enim SQL funkcijama svojstava  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/c3ref\/c_deterministic.html#sqliteinnocuous\">SQLITE_INNOCUOUS<\/a><\/noindex> (neprijetne funkcije koje ne zavise od spolja\u0161njih parametara i ne mogu se koristiti za izvr\u0161enje malicioznih radnji) i <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/c3ref\/c_deterministic.html#sqlitedirectonly\">SQLITE_DIRECTONLY<\/a><\/noindex> (samo direktan poziv u SQL upitima, bez mogu\u0107nosti kori\u0161\u0107enja u okida\u010dima, pogledima i \u0161emama strukture podataka);\n<li class=\"l\"> Dodana je bila enota <noindex><a rel=\"nofollow\" href=\"https:\/\/sqlite.org\/src\/file\/ext\/misc\/uuid.c\">uuid<\/a><\/noindex> sa implementacijom funkcija za obradu UUID (RFC-4122);\n<li class=\"l\"> Dodata je PRAGMA <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/pragma.html#pragma_hard_heap_limit\">hard_heap_limit<\/a><\/noindex> i funkcija  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/c3ref\/hard_heap_limit64.html\">sqlite3_hard_heap_limit64()<\/a><\/noindex> za upravljanje maksimalnom veli\u010dinom hrpe;\n<li class=\"l\"> U PRAGMA <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/pragma.html#pragma_function_list\">function_list<\/a><\/noindex> dodata su informacija o tipu, svojstvima i broju argumenata svake funkcije;\n<li class=\"l\"> U virtuelnu tabelu DBSTAT  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/dbstat.html#dbstatagg\">dodano<\/a><\/noindex> re\u017eim agregacije podataka;\n<li class=\"l\"> U sqlite3_open_v2() implementirana je opcija SQLITE_OPEN_NOFOLLOW, koja omogu\u0107ava zabranu otvaranja simboli\u010dkih linkova;\n<li class=\"l\"> Za argument <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/json1.html#jsonpath\">PATH<\/a><\/noindex>, prenesenega v JSON-funkcijah, je bila dodana podpora za notacijo nizov &#171;#-N&#187;;\n<li class=\"l\"> U sistemu raspodele memorije <noindex><a rel=\"nofollow\" href=\"http:\/\/sqlite.org\/malloc.html#lookaside\">lookaside<\/a><\/noindex> Podprta sta dva lo\u010dena skladi\u0161\u010da pomnilnika, od katerih se vsako lahko uporabi za dodelitev blokov razdifferent sizes (razdelitev omogo\u010da \u0161ir\u0161o uporabo sistema lookaside, hkrati pa zmanj\u0161a velikost dodeljenega po\u017earnega zidu na vsako povezavo s 120 na 48 kB);\n<li class=\"l\"> Podpora za PRAGMA je bila ukinjena <noindex><a rel=\"nofollow\" href=\"https:\/\/www.sqlite.org\/pragma.html#pragma_legacy_file_format\">legacy_file_format<\/a><\/noindex>, ki ni bila zdru\u017eljiva z VACUUM, generiranimi stolpci in padajo\u010dimi indeksi (podporo zastare formata lahko vrnete s pomo\u010djo zastavice SQLITE_DBCONFIG_LEGACY_FILE_FORMAT v sqlite3_db_config()).\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Izvor: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52238\">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 3.31.0, \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 Adobe, Oracle, Mozilla, Bentley \u0438 Bloomberg. \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\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0433\u0435\u043d\u0435\u0440\u0438\u0440\u0443\u0435\u043c\u044b\u0445 \u0441\u0442\u043e\u043b\u0431\u0446\u043e\u0432 [&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-55593","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in 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