{"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\/pt\/blog\/news\/vypusk-subd-sqlite-3-51","title":{"rendered":"Lan\u00e7amento do SGBD SQLite 3.51","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Foi lan\u00e7ado o SQLite 3.51, um SGBD leve, desenvolvido como uma biblioteca port\u00e1til. O c\u00f3digo do SQLite \u00e9 disponibilizado no dom\u00ednio p\u00fablico, ou seja, pode ser utilizado sem restri\u00e7\u00f5es e gratuitamente para qualquer finalidade. O suporte financeiro aos desenvolvedores do SQLite \u00e9 fornecido por um cons\u00f3rcio criado especificamente para esse prop\u00f3sito.     <\/p>\n<p>Principais mudan\u00e7as:  <\/p>\n<ul>\n<li class=\"l\"> Novas fun\u00e7\u00f5es JSON jsonb_each() e jsonb_tree() foram adicionadas, que diferem das fun\u00e7\u00f5es json_each() e json_tree() anteriormente dispon\u00edveis, pois retornam valores JSONB para dados do tipo array ou object.\n<li class=\"l\"> O c\u00f3digo das extens\u00f5es carray e percentile foi transferido para o arquivo base &#171;sqlite3.c&#187; com c\u00f3digo embutido do SQLite. Por padr\u00e3o, essas extens\u00f5es est\u00e3o desativadas e requerem a especifica\u00e7\u00e3o dos par\u00e2metros de compila\u00e7\u00e3o &#171;-DSQLITE_ENABLE_CARRAY&#187; e &#171;-DSQLITE_ENABLE_PERCENTILE&#187;.\n<li class=\"l\"> A interface para o uso do SQLite em scripts Tcl foi aprimorada. Um novo par\u00e2metro &#171;-asdict&#187; foi adicionado ao comando &#171;eval&#187; para retornar strings usando o tipo &#171;dict&#187; em vez de &#171;array&#187;. Tamb\u00e9m foi adicionada a possibilidade de interromper fun\u00e7\u00f5es de usu\u00e1rio para retornar o valor NULL.\n<li class=\"l\"> Mudan\u00e7as na interface da linha de comando:\n<ul>\n<li class=\"l\"> A precis\u00e3o do comando &#171;.timer&#187; foi aumentada para microssegundos;\n<li class=\"l\"> Nos modos de formata\u00e7\u00e3o &#171;box&#187; e &#171;column&#187;, o suporte a caracteres de dupla largura foi implementado;\n<li class=\"l\"> O comando &#171;.imposter&#187; agora pode fornecer tabelas imposter em modo somente leitura (permitindo acesso aos dados no \u00edndice como se fossem uma tabela), funcionando com a opera\u00e7\u00e3o VACUUM e n\u00e3o exigindo ser executado com a flag &#171;&#8212;unsafe-testing&#187;\n<li class=\"l\"> Uma op\u00e7\u00e3o &#171;&#8212;ifexists&#187; foi adicionada ao utilit\u00e1rio sqlite e ao comando &#171;.open&#187;.\n<li class=\"l\"> A largura m\u00e1xima da linha definida pelo comando &#171;.width&#187; est\u00e1 limitada a 30000 caracteres.   <\/ul>\n<li class=\"l\"> Otimiza\u00e7\u00f5es de desempenho foram realizadas:\n<ul>\n<li class=\"l\"> A carga de CPU foi reduzida ao confirmar transa\u00e7\u00f5es limitadas ao acesso de leitura;\n<li class=\"l\"> A determina\u00e7\u00e3o de opera\u00e7\u00f5es de jun\u00e7\u00e3o (JOIN) que n\u00e3o retornam linhas devido a uma ou mais tabelas n\u00e3o conterem linhas foi aprimorada;\n<li class=\"l\"> A execu\u00e7\u00e3o de subconsultas escalares que n\u00e3o afetam o resultado foi eliminada;\n<li class=\"l\"> O desempenho das fun\u00e7\u00f5es de janela em consultas com a express\u00e3o &#171;BETWEEN \ud83d\ude21 FOLLOWING AND :y FOLLOWING&#187; e um valor muito grande para &#171;:y&#187; foi acelerado.   <\/ul>\n<li class=\"l\"> Uma pragma &#171;PRAGMA wal_checkpoint=NOOP&#187; e a fun\u00e7\u00e3o API sqlite3_wal_checkpoint() foram adicionadas para registrar altera\u00e7\u00f5es no log WAL.\n<li class=\"l\"> Fun\u00e7\u00f5es sqlite3_set_errmsg() e sqlite3_db_status64() foram adicionadas \u00e0 API.\n<li class=\"l\"> Na vers\u00e3o JavaScript\/WASM do SQLite, foi implementado suporte para compila\u00e7\u00e3o em uma representa\u00e7\u00e3o WebAssembly com ponteiros de 64 bits.\n<li class=\"l\"> Aumentada a resist\u00eancia a danos no banco de dados em aplicativos que removem bloqueios POSIX atrav\u00e9s da chamada close().\n<li class=\"l\"> Melhor suporte para a plataforma VxWorks.      <\/ul>\n<p>Fonte: <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, \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 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[&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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