Compania Google a lansat un nou limbaj declarativ de programare logic\u0103, Logica, destinat manipul\u0103rii datelor \u0219i care transpune programele \u00een SQL. Noul limbaj este orientat spre cei care doresc s\u0103 utilizeze sintaxa program\u0103rii logice pentru a scrie interog\u0103ri la baze de date. \u00cen prezent, codul SQL rezultat poate fi executat \u00een stocarea Google BigQuery sau \u00een SGBD-urile PostgreSQL \u0219i SQLite, a c\u0103ror suport este deocamdat\u0103 experimental. \u00cen viitor, se preconizeaz\u0103 extinderea num\u0103rului de dialecte SQL suportate. Codul proiectului este scris \u00een Python \u0219i publicat sub licen\u021ba Apache 2.0. <\/p>\n
Logica continu\u0103 dezvoltarea altui limbaj de procesare a datelor creat de Google, Yedalog, \u0219i ofer\u0103 un nivel de abstrac\u021bie indisponibil \u00een SQL-ul standard. Interog\u0103rile \u00een Logica sunt programate sub form\u0103 de seturi de afirma\u021bii logice. Sunt suportate module, opera\u021bii de import \u0219i posibilitatea utiliz\u0103rii Logica din intermediul shell-ului interactiv Jupyter Notebook. De exemplu, pentru a crea un rezumat al persoanelor men\u021bionate cel mai des \u00een \u0219tiri \u00een anul 2020, se poate folosi urm\u0103torul program \u00een limbajul Logica pentru a interoga baza de date GDELT: @OrderBy(Mentions, \"mentions desc\"); @Limit(Mentions, 10); Mentions(person:, mentions? += 1) distinct :- gdelt-bq.gdeltv2.gkg(persons:, date:), Substr(ToString(date), 0, 4) == \"2020\", the_persons == Split(persons, \";\"), person in the_persons; $ logica mentions.l run Mentions +------++------ | person | mentions_count | +------+------ | 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 | +------+------ <\/p>\n
Scrierea de interog\u0103ri complexe \u00een SQL duce la necesitatea cre\u0103rii de lan\u021buri voluminoase, pe mai multe r\u00e2nduri, care nu sunt evidente pentru percep\u021bie, \u00eempiedic\u00e2nd reutilizarea p\u0103r\u021bilor interog\u0103rii \u0219i \u00eengreun\u00e2nd \u00eentre\u021binerea. Pentru calculele tipice repetitive \u00een SQL, se pot utiliza vizualiz\u0103ri \u0219i func\u021bii, dar acestea nu sus\u021bin opera\u021biuni de import \u0219i nu ofer\u0103 flexibilitatea caracteristic\u0103 limbajelor de nivel \u00eenalt (de exemplu, nu este posibil s\u0103 transmi\u021bi o func\u021bie \u00eentr-o alt\u0103 func\u021bie). Logica permite compunerea programelor din blocuri logice mici, clare \u0219i accesibile pentru reutilizare, care pot fi testate, asociate cu nume specifice \u0219i grupate \u00een pachete disponibile pentru utilizarea \u00een alte proiecte. \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 \u0442\u0435\u0445, \u043a\u0442\u043e \u0445\u043e\u0447\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441 \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 \u043f\u0440\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u0438\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 \u043a \u0411\u0414. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 SQL-\u043a\u043e\u0434 \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c\u0441\u044f \u0432 \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0435 Google BigQuery \u0438\u043b\u0438 \u0432 \u0421\u0423\u0411\u0414 PostgreSQL \u0438 SQLite, \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\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 a publicat limbajul de programare logic\u0103 Logica | 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Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"