{"id":99711,"date":"2021-04-13T16:22:39","date_gmt":"2021-04-13T14:22:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/google-opublikoval-yazyk-logicheskogo-programmirovaniya-logica"},"modified":"2021-04-13T16:22:39","modified_gmt":"2021-04-13T14:22:39","slug":"google-opublikoval-yazyk-logicheskogo-programmirovaniya-logica","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/google-opublikoval-yazyk-logicheskogo-programmirovaniya-logica","title":{"rendered":"O Google publicou a linguagem de programa\u00e7\u00e3o l\u00f3gica Logica","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A empresa Google apresentou uma nova linguagem declarativa de programa\u00e7\u00e3o l\u00f3gica chamada Logica, destinada \u00e0 manipula\u00e7\u00e3o de dados e que traduz programas para a linguagem SQL. A nova linguagem \u00e9 voltada para quem deseja usar a sintaxe de programa\u00e7\u00e3o l\u00f3gica ao escrever consultas a bancos de dados. Atualmente, o c\u00f3digo SQL resultante pode ser executado no armazenamento Google BigQuery ou em bancos de dados PostgreSQL e SQLite, cuja compatibilidade ainda \u00e9 experimental. No futuro, est\u00e1 previsto ampliar o n\u00famero de dialetos SQL suportados. O c\u00f3digo do projeto \u00e9 escrito em Python e publicado sob a licen\u00e7a Apache 2.0. <\/p>\n

O Logica continua o desenvolvimento de outra linguagem de processamento de dados criada no Google, chamada Yedalog, e oferece um n\u00edvel de abstra\u00e7\u00e3o que n\u00e3o est\u00e1 dispon\u00edvel no SQL padr\u00e3o. As consultas no Logica s\u00e3o programadas na forma de um conjunto de afirma\u00e7\u00f5es l\u00f3gicas. M\u00f3dulos, opera\u00e7\u00f5es de importa\u00e7\u00e3o e a possibilidade de usar o Logica a partir do shell interativo do Jupyter Notebook s\u00e3o suportados. Por exemplo, para gerar um resumo das pessoas mais frequentemente mencionadas nas not\u00edcias de 2020, pode-se usar o seguinte programa na linguagem Logica para acessar o banco de dados GDELT: @OrderBy(Mentions, \u00abmentions desc\u00bb); @Limit(Mentions, 10); Mentions(person:, mentions? += 1) distinct :- gdelt-bq.gdeltv2.gkg(persons:, date:), Substr(ToString(date), 0, 4) == \u00ab2020\u00bb, the_persons == Split(persons, \u00ab;\u00bb), person in the_persons; $ logica mentions.l run Mentions +\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014+\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014+ | person | mentions_count | +\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014+\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014+ | donald trump | 3077130 | | los angeles | 1078412 | | joe biden | 1054827 | | george floyd | 872919 | | boris johnson | 674786 | | barack obama | 438181 | | vladimir putin | 410587 | | bernie sanders | 387383 | | andrew cuomo | 345462 | | las vegas | 325487 | +\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014+\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014+ <\/p>\n

A elabora\u00e7\u00e3o de consultas complexas em SQL resulta na necessidade de criar longas cadeias de c\u00f3digo, que n\u00e3o s\u00e3o intuitivas e dificultam a reutiliza\u00e7\u00e3o de partes da consulta e a manuten\u00e7\u00e3o. Para c\u00e1lculos repetitivos t\u00edpicos em SQL, \u00e9 poss\u00edvel usar vis\u00f5es e fun\u00e7\u00f5es, mas elas n\u00e3o suportam opera\u00e7\u00f5es de importa\u00e7\u00e3o e n\u00e3o oferecem a flexibilidade caracter\u00edstica das linguagens de alto n\u00edvel (por exemplo, n\u00e3o \u00e9 poss\u00edvel passar uma fun\u00e7\u00e3o para outra fun\u00e7\u00e3o). O Logica permite compor programas a partir de pequenos blocos l\u00f3gicos, claros e acess\u00edveis para reutiliza\u00e7\u00e3o, que podem ser testados, associados a nomes espec\u00edficos e agrupados em pacotes, dispon\u00edveis para uso em outros projetos.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Google \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043d\u043e\u0432\u044b\u0439 \u0434\u0435\u043a\u043b\u0430\u0440\u0430\u0442\u0438\u0432\u043d\u044b\u0439 \u044f\u0437\u044b\u043a \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f Logica, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u044b\u0439 \u0434\u043b\u044f \u043c\u0430\u043d\u0438\u043f\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u043c\u0438 \u0438 \u0442\u0440\u0430\u043d\u0441\u043b\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u0432 \u044f\u0437\u044b\u043a SQL. \u041d\u043e\u0432\u044b\u0439 \u044f\u0437\u044b\u043a \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d \u043d\u0430 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\u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043f\u043e\u043a\u0430 […]<\/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-99711","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Google lan\u00e7ou a linguagem de programa\u00e7\u00e3o l\u00f3gica Logica | ProHoster","description":"A Google apresentou uma nova linguagem declarativa de programa\u00e7\u00e3o l\u00f3gica, Logica, que se destina \u00e0 manipula\u00e7\u00e3o de dados e traduz programas para o 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