![\"\"](\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\")
<\/p>\n
Sum :<\/h4>\n\n- This aggregation function is used to sum numeric values for the document in each group.<\/li>\n<\/ul>\n
Count :<\/h4>\n\n- This aggregation function is used to count total number of documents.<\/li>\n<\/ul>\n
Average :<\/h4>\n\n- This aggregation function is used to calculates the average of all given values from all documents.<\/li>\n<\/ul>\n
Minimum :<\/h4>\n\n- This aggregation function is used to get the minimum value from all the documents.<\/li>\n<\/ul>\n
Maximum :<\/h4>\n\n- This aggregation function is used to get the maximum value from all the documents.<\/li>\n<\/ul>\n
First :<\/h4>\n\n- This aggregation function is used to get the first document from the grouping.<\/li>\n<\/ul>\n
Last :<\/h4>\n\n- This aggregation function is used to get the last document from the grouping.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n
What are the aggregate functions of MongoDB ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the aggregate functions of MongoDB ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-04T11:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"name\":\"What are the aggregate functions of MongoDB ? 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Count :<\/h4>\n\n- This aggregation function is used to count total number of documents.<\/li>\n<\/ul>\n
Average :<\/h4>\n\n- This aggregation function is used to calculates the average of all given values from all documents.<\/li>\n<\/ul>\n
Minimum :<\/h4>\n\n- This aggregation function is used to get the minimum value from all the documents.<\/li>\n<\/ul>\n
Maximum :<\/h4>\n\n- This aggregation function is used to get the maximum value from all the documents.<\/li>\n<\/ul>\n
First :<\/h4>\n\n- This aggregation function is used to get the first document from the grouping.<\/li>\n<\/ul>\n
Last :<\/h4>\n\n- This aggregation function is used to get the last document from the grouping.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n
What are the aggregate functions of MongoDB ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the aggregate functions of MongoDB ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-04T11:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"name\":\"What are the aggregate functions of MongoDB ? 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Average :<\/h4>\n\n- This aggregation function is used to calculates the average of all given values from all documents.<\/li>\n<\/ul>\n
Minimum :<\/h4>\n\n- This aggregation function is used to get the minimum value from all the documents.<\/li>\n<\/ul>\n
Maximum :<\/h4>\n\n- This aggregation function is used to get the maximum value from all the documents.<\/li>\n<\/ul>\n
First :<\/h4>\n\n- This aggregation function is used to get the first document from the grouping.<\/li>\n<\/ul>\n
Last :<\/h4>\n\n- This aggregation function is used to get the last document from the grouping.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n
What are the aggregate functions of MongoDB ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the aggregate functions of MongoDB ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-04T11:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"name\":\"What are the aggregate functions of MongoDB ? 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Minimum :<\/h4>\n\n- This aggregation function is used to get the minimum value from all the documents.<\/li>\n<\/ul>\n
Maximum :<\/h4>\n\n- This aggregation function is used to get the maximum value from all the documents.<\/li>\n<\/ul>\n
First :<\/h4>\n\n- This aggregation function is used to get the first document from the grouping.<\/li>\n<\/ul>\n
Last :<\/h4>\n\n- This aggregation function is used to get the last document from the grouping.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n
What are the aggregate functions of MongoDB ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the aggregate functions of MongoDB ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-04T11:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"name\":\"What are the aggregate functions of MongoDB ? 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Maximum :<\/h4>\n\n- This aggregation function is used to get the maximum value from all the documents.<\/li>\n<\/ul>\n
First :<\/h4>\n\n- This aggregation function is used to get the first document from the grouping.<\/li>\n<\/ul>\n
Last :<\/h4>\n\n- This aggregation function is used to get the last document from the grouping.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n
What are the aggregate functions of MongoDB ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the aggregate functions of MongoDB ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-04T11:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"name\":\"What are the aggregate functions of MongoDB ? 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First :<\/h4>\n\n- This aggregation function is used to get the first document from the grouping.<\/li>\n<\/ul>\n
Last :<\/h4>\n\n- This aggregation function is used to get the last document from the grouping.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n
What are the aggregate functions of MongoDB ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the aggregate functions of MongoDB ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-04T11:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"name\":\"What are the aggregate functions of MongoDB ? 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Last :<\/h4>\n\n- This aggregation function is used to get the last document from the grouping.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n
What are the aggregate functions of MongoDB ? - Wikitechy<\/title>\n<meta name=\"description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the aggregate functions of MongoDB ? - Wikitechy\" \/>\n<meta property=\"og:description\" content=\"What are the aggregate functions of MongoDB ? - The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\" \/>\n<meta property=\"og:site_name\" content=\"Wikitechy\" \/>\n<meta property=\"article:published_time\" content=\"2022-04-04T11:28:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wikitechy.com\/interview-questions\/wp-content\/uploads\/2022\/04\/aggregation-functions-mongodb.png\" \/>\n<meta name=\"author\" content=\"webmaster\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"webmaster\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"url\":\"https:\/\/www.wikitechy.com\/interview-questions\/mongodb\/what-are-the-aggregate-functions-of-mongodb\/\",\"name\":\"What are the aggregate functions of MongoDB ? 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The aggregation pipeline consists of stages, and each stage transforms the document in MongoDB. In each state, the documents are taken as input and produce the resultant set of documents are now in the next stage (id available) the resultant documents taken as input and produce output, this process is going on till the last […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"passster_activate_protection":false,"passster_protect_child_pages":"","passster_protection_type":"password","passster_password":"","passster_activate_overwrite_defaults":"","passster_headline":"","passster_instruction":"","passster_placeholder":"","passster_button":"","passster_id":"","passster_activate_misc_settings":"","passster_redirect_url":"","passster_hide":"no","passster_area_shortcode":"","gtb_hide_title":false,"gtb_wrap_title":false,"gtb_class_title":"","gtb_remove_headerfooter":false,"footnotes":""},"categories":[16831],"tags":[16894,16887,16889,16897,16893,16890,16892,16891,16888,16895,16896],"class_list":["post-4085","post","type-post","status-publish","format-standard","hentry","category-mongodb","tag-aggregate-function-in-mongodb-example","tag-aggregation-in-mongodb","tag-aggregation-operations","tag-aggregation-pipeline-in-mongodb","tag-aggregations-in-mongodb-by-example","tag-concept-of-aggregation-in-mongodb","tag-how-to-use-aggregations-in-mongodb","tag-mongodb-aggregate-functions","tag-mongodb-aggregation","tag-mongodb-aggregation-operators","tag-mongodb-aggregation-tutorial"],"yoast_head":"\n