{"id":2392,"date":"2023-07-22T11:24:01","date_gmt":"2023-07-22T11:24:01","guid":{"rendered":"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/"},"modified":"2023-07-22T11:24:01","modified_gmt":"2023-07-22T11:24:01","slug":"grupa-mongodb-wedlug-wielu-pol","status":"publish","type":"post","link":"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/","title":{"rendered":"Mongodb: jak grupowa\u0107 wed\u0142ug wielu p\u00f3l"},"content":{"rendered":"<p><\/p>\n<hr>\n<p><span style=\"color: #000000;\">Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby pogrupowa\u0107 wiele p\u00f3l i wykona\u0107 agregacj\u0119 w MongoDB:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>db.collection.aggregate([\n    { <span style=\"color: #ff0000;\">$group<\/span> : { <span style=\"color: #3366ff;\">_id<\/span> :{field1:\" <span style=\"color: #ff0000;\">$field1<\/span> \", field2:\" <span style=\"color: #ff0000;\">$field2<\/span> \"}, <span style=\"color: #3366ff;\">count<\/span> :{ <span style=\"color: #3366ff;\">$sum<\/span> :1}}}\n])\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Poni\u017csze przyk\u0142ady pokazuj\u0105, jak u\u017cywa\u0107 tej sk\u0142adni w przypadku <span style=\"padding: 1px; border: 1px solid black;\">zespo\u0142u<\/span> windykacyjnego z nast\u0119puj\u0105cymi dokumentami:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>db.teams.insertOne({team: \" <span style=\"color: #008000;\">Mavs<\/span> \", position: \" <span style=\"color: #008000;\">Guard<\/span> \", points: <span style=\"color: #ff0000;\">31<\/span> })<\/strong>\n<strong>db.teams.insertOne({team: \" <span style=\"color: #008000;\">Mavs<\/span> \", position: \" <span style=\"color: #008000;\">Guard<\/span> \", points: <span style=\"color: #ff0000;\">22<\/span> })<\/strong>\n<strong>db.teams.insertOne({team: \" <span style=\"color: #008000;\">Mavs<\/span> \", position: \" <span style=\"color: #008000;\">Forward<\/span> \", points: <span style=\"color: #ff0000;\">19<\/span> })<\/strong>\n<strong>db.teams.insertOne({team: \" <span style=\"color: #008000;\">Rockets<\/span> \", position: \" <span style=\"color: #008000;\">Guard<\/span> \", points: <span style=\"color: #ff0000;\">26<\/span> })<\/strong>\n<strong>db.teams.insertOne({team: \" <span style=\"color: #008000;\">Rockets<\/span> \", position: \" <span style=\"color: #008000;\">Forward<\/span> \", points: <span style=\"color: #ff0000;\">33<\/span> })<\/strong><\/pre>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 1: grupowanie wed\u0142ug kilku p\u00f3l i agregowanie<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Mo\u017cemy u\u017cy\u0107 poni\u017cszego kodu do grupowania wed\u0142ug \u201ezespo\u0142u\u201d i \u201epozycji\u201d oraz zliczania wyst\u0105pie\u0144 ka\u017cdego grupowania:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>db.teams.aggregate([\n    { <span style=\"color: #ff0000;\">$group<\/span> : { <span style=\"color: #3366ff;\">_id<\/span> : {team: \" <span style=\"color: #ff0000;\">$team<\/span> \", position: \" <span style=\"color: #ff0000;\">$position<\/span> \"}, <span style=\"color: #3366ff;\">count<\/span> :{ <span style=\"color: #3366ff;\">$sum<\/span> :1}}}\n])<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Zwraca to nast\u0119puj\u0105ce wyniki:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, count: 1 }\n{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, count: 2 }\n{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, count: 1 }\n{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, count: 1 }<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Mogliby\u015bmy tak\u017ce dokona\u0107 innej agregacji. Na przyk\u0142ad mo\u017cemy pogrupowa\u0107 wed\u0142ug \u201ezespo\u0142u\u201d i pozycji\u201d i znale\u017a\u0107 sum\u0119 \u201epunkt\u00f3w\u201d poprzez grupowanie:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>db.teams.aggregate([\n    { <span style=\"color: #ff0000;\">$group<\/span> : { <span style=\"color: #3366ff;\">_id<\/span> : {team: \" <span style=\"color: #ff0000;\">$team<\/span> \", position: \" <span style=\"color: #ff0000;\">$position<\/span> \"}, <span style=\"color: #3366ff;\">sumPoints<\/span> <span style=\"color: #000000;\">:{<\/span> <span style=\"color: #3366ff;\"><span style=\"color: #000000;\"><span style=\"color: #3366ff;\">$sum<\/span> : \" <span style=\"color: #ff0000;\">$points<\/span> \"}}}<\/span>\n<span style=\"color: #000000;\">])<\/span><\/span><\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Zwraca to nast\u0119puj\u0105ce wyniki:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, sumPoints: 33 }\n{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, sumPoints: 53 }\n{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, sumPoints: 19 }\n{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, sumPoints: 26 }<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">To nam m\u00f3wi:<\/span><\/p>\n<ul>\n<li> <span style=\"color: #000000;\">Suma punkt\u00f3w zdobytych przez zawodnik\u00f3w \u201eRockets\u201d na pozycji \u201eNapastnik\u201d wynosi <strong>33<\/strong> .<\/span><\/li>\n<li> <span style=\"color: #000000;\">Suma punkt\u00f3w zdobytych przez zawodnik\u00f3w \u201eMavs\u201d na pozycji \u201eStra\u017cnika\u201d wynosi <strong>53<\/strong> .<\/span><\/li>\n<\/ul>\n<p> <span style=\"color: #000000;\">I tak dalej.<\/span><\/p>\n<h3> <span style=\"color: #000000;\"><strong>Przyk\u0142ad 2:<\/strong><\/span> <span style=\"color: #000000;\"><strong>grupuj wed\u0142ug kilku p\u00f3l i agreguj (nast\u0119pnie sortuj)<\/strong><\/span><\/h3>\n<p> <span style=\"color: #000000;\">Mo\u017cemy u\u017cy\u0107 poni\u017cszego kodu, aby pogrupowa\u0107 wed\u0142ug \u201ezespo\u0142u\u201d i pozycji\u201d, znale\u017a\u0107 sum\u0119 \u201epunkt\u00f3w\u201d poprzez grupowanie, a nast\u0119pnie posortowa\u0107 wyniki wed\u0142ug \u201epunkt\u00f3w\u201d w <strong>kolejno\u015bci rosn\u0105cej<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>db.teams.aggregate([\n    { <span style=\"color: #ff0000;\">$group<\/span> : { <span style=\"color: #3366ff;\">_id<\/span> : {team: \" <span style=\"color: #ff0000;\">$team<\/span> \", position: \" <span style=\"color: #ff0000;\">$position<\/span> \"}, <span style=\"color: #3366ff;\">sumPoints<\/span> :{ <span style=\"color: #3366ff;\">$sum<\/span> : \" <span style=\"color: #ff0000;\">$points<\/span> \"}}},\n    { <span style=\"color: #ff0000;\">$sort<\/span> : { <span style=\"color: #3366ff;\">sumPoints<\/span> :1}}\n])\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Zwraca to nast\u0119puj\u0105ce wyniki:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, sumPoints: 19 }\n{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, sumPoints: 26 }\n{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, sumPoints: 33 }\n{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, sumPoints: 53 }\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Mo\u017cemy u\u017cy\u0107 <strong>-1,<\/strong> aby posortowa\u0107 wyniki wed\u0142ug punkt\u00f3w w <strong>kolejno\u015bci malej\u0105cej<\/strong> :<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>db.teams.aggregate([\n    { <span style=\"color: #ff0000;\">$group<\/span> : { <span style=\"color: #3366ff;\">_id<\/span> : {team: \" <span style=\"color: #ff0000;\">$team<\/span> \", position: \" <span style=\"color: #ff0000;\">$position<\/span> \"}, <span style=\"color: #3366ff;\">sumPoints<\/span> :{ <span style=\"color: #3366ff;\">$sum<\/span> : \" <span style=\"color: #ff0000;\">$points<\/span> \"}}},\n    { <span style=\"color: #ff0000;\">$sort<\/span> : { <span style=\"color: #3366ff;\">sumPoints<\/span> :-1}}\n])\n<\/strong><\/pre>\n<p> <span style=\"color: #000000;\">Zwraca to nast\u0119puj\u0105ce wyniki:<\/span><\/p>\n<pre style=\"background-color: #ececec; font-size: 15px;\"> <strong>{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, sumPoints: 53 }\n{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, sumPoints: 33 }\n{ _id: { team: ' <span style=\"color: #008000;\">Rockets<\/span> ', position: ' <span style=\"color: #008000;\">Guard<\/span> ' }, sumPoints: 26 }\n{ _id: { team: ' <span style=\"color: #008000;\">Mavs<\/span> ', position: ' <span style=\"color: #008000;\">Forward<\/span> ' }, sumPoints: 19 }<\/strong><\/pre>\n<p> <span style=\"color: #000000;\"><strong>Uwaga<\/strong> : Pe\u0142n\u0105 dokumentacj\u0119 <strong>$group<\/strong> znajdziesz <a href=\"https:\/\/docs.mongodb.com\/manual\/reference\/operator\/aggregation\/group\/\" target=\"_blank\" rel=\"noopener\">tutaj<\/a> .<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mo\u017cesz u\u017cy\u0107 nast\u0119puj\u0105cej sk\u0142adni, aby pogrupowa\u0107 wiele p\u00f3l i wykona\u0107 agregacj\u0119 w MongoDB: db.collection.aggregate([ { $group : { _id :{field1:&#8221; $field1 &#8222;, field2:&#8221; $field2 &#8222;}, count :{ $sum :1}}} ]) Poni\u017csze przyk\u0142ady pokazuj\u0105, jak u\u017cywa\u0107 tej sk\u0142adni w przypadku zespo\u0142u windykacyjnego z nast\u0119puj\u0105cymi dokumentami: db.teams.insertOne({team: &#8221; Mavs &#8222;, position: &#8221; Guard &#8222;, points: 31 }) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-2392","post","type-post","status-publish","format-standard","hentry","category-przewodnik"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>MongoDB: Jak grupowa\u0107 wed\u0142ug wielu p\u00f3l - Statorials<\/title>\n<meta name=\"description\" content=\"W tym samouczku wyja\u015bniono, jak grupowa\u0107 wiele p\u00f3l w MongoDB podczas uruchamiania zapytania, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"MongoDB: Jak grupowa\u0107 wed\u0142ug wielu p\u00f3l - Statorials\" \/>\n<meta property=\"og:description\" content=\"W tym samouczku wyja\u015bniono, jak grupowa\u0107 wiele p\u00f3l w MongoDB podczas uruchamiania zapytania, podaj\u0105c kilka przyk\u0142ad\u00f3w.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/\" \/>\n<meta property=\"og:site_name\" content=\"Statorials\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-22T11:24:01+00:00\" \/>\n<meta name=\"author\" content=\"Benjamin Anderson\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Benjamin Anderson\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/\",\"url\":\"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/\",\"name\":\"MongoDB: Jak grupowa\u0107 wed\u0142ug wielu p\u00f3l - Statorials\",\"isPartOf\":{\"@id\":\"https:\/\/statorials.org\/pl\/#website\"},\"datePublished\":\"2023-07-22T11:24:01+00:00\",\"dateModified\":\"2023-07-22T11:24:01+00:00\",\"author\":{\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\"},\"description\":\"W tym samouczku wyja\u015bniono, jak grupowa\u0107 wiele p\u00f3l w MongoDB podczas uruchamiania zapytania, podaj\u0105c kilka przyk\u0142ad\u00f3w.\",\"breadcrumb\":{\"@id\":\"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/#breadcrumb\"},\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/statorials.org\/pl\/grupa-mongodb-wedlug-wielu-pol\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Dom\",\"item\":\"https:\/\/statorials.org\/pl\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Mongodb: jak grupowa\u0107 wed\u0142ug wielu p\u00f3l\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/statorials.org\/pl\/#website\",\"url\":\"https:\/\/statorials.org\/pl\/\",\"name\":\"Statorials\",\"description\":\"Tw\u00f3j przewodnik po kompetencjach statystycznych!\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/statorials.org\/pl\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/6484727a4612df3e69f016c3129c6965\",\"name\":\"Benjamin Anderson\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\/\/statorials.org\/pl\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"contentUrl\":\"https:\/\/statorials.org\/pl\/wp-content\/uploads\/2023\/11\/Benjamin-Anderson-96x96.jpg\",\"caption\":\"Benjamin Anderson\"},\"description\":\"Cze\u015b\u0107, jestem Benjamin i jestem emerytowanym profesorem statystyki, kt\u00f3ry zosta\u0142 oddanym nauczycielem Statorials. 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