{"id":6993,"date":"2015-03-11T23:23:40","date_gmt":"2015-03-12T03:23:40","guid":{"rendered":"http:\/\/bangla.salearningschool.com\/?p=6993"},"modified":"2015-03-10T23:07:56","modified_gmt":"2015-03-11T03:07:56","slug":"mongodb-aggregation","status":"publish","type":"post","link":"http:\/\/bangla.sitestree.com\/?p=6993","title":{"rendered":"MongoDB Aggregation"},"content":{"rendered":"

MongoDB \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09b8
\n\u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4<\/p>\n

* Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf
\nMongoDB \u09a4\u09c7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u0995\u09c7 \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u0995\u09b0\u09a4\u09c7 \u09b9\u09b2\u09c7 limit() \u09ae\u09c7\u09a5\u09a1 \u09ac\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7\u0964 Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u098f\u0995 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7\u09b0 \u099f\u09be\u0987\u09aa \u09b8\u09ae\u09b0\u09cd\u09a5\u09a8 \u0995\u09b0\u09c7 \u09af\u09be \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u098f\u09ac\u0982 \u0986\u09aa\u09a8\u09bf \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09a4\u09c7 \u099a\u09be\u0987\u099b\u09c7\u09a8\u0964<\/p>\n

\u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8\u0983
\nlimit() \u098f\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b0\u09c2\u09aa\u0983<\/p>\n

>db.COLLECTION_NAME.find().limit(NUMBER)<\/p>\n

\u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0983
\n\u09a8\u09bf\u09ae\u09cd\u09a8\u09b2\u09bf\u0996\u09bf\u09a4 \u09a4\u09a5\u09cd\u09af\u09c7\u09b0 \u09b8\u09be\u09a5\u09c7 myycol \u0995\u09be\u09b2\u09c7\u0995\u09b6\u09a8\u099f\u09bf \u09ac\u09bf\u09ac\u09c7\u099a\u09a8\u09be \u0995\u09b0\u09c1\u09a8\u0983<\/p>\n

{ “_id” : ObjectId(5983548781331adf45ec5), “title”:”MongoDB Overview”}
\n{ “_id” : ObjectId(5983548781331adf45ec6), “title”:”NoSQL Overview”}
\n{ “_id” : ObjectId(5983548781331adf45ec7), “title”:”Tutorials Point Overview”}<\/p>\n

\u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f quering \u098f\u09b0 \u09b8\u09ae\u09df \u09a8\u09bf\u099a\u09c7\u09b0 \u0989\u09a6\u09be\u09b9\u09b0\u09a3\u099f\u09bf \u0995\u09c7\u09ac\u09b2\u09ae\u09be\u09a4\u09cd\u09b0 \u09e8\u099f\u09bf \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09ac\u09c7\u0983<\/p>\n

>db.mycol.find({},{“title”:1,_id:0}).limit(2)
\n{“title”:”MongoDB Overview”}
\n{“title”:”NoSQL Overview”}
\n><\/p>\n

\u09af\u09a6\u09bf \u0986\u09aa\u09a8\u09bf Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u0989\u09b2\u09cd\u09b2\u09c7\u0996 \u09a8\u09be \u0995\u09b0\u09c7\u09a8 \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u099f\u09bf \u0995\u09be\u09b2\u09c7\u0995\u09b6\u09a8\u09c7\u09b0 \u09b8\u0995\u09b2 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09ac\u09c7\u0964<\/p>\n

* MongoDB Skip() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf
\n\u098f\u099b\u09be\u09a1\u09bc\u09be\u0993 limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u099b\u09be\u09dc\u09be \u0986\u09b0\u0993 \u098f\u0995\u099f\u09bf \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf skip() \u0986\u099b\u09c7 \u09af\u09be \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09b8\u0982\u0996\u09cd\u09af\u09be\u09b0 \u099f\u09be\u0987\u09aa \u09b8\u09ae\u09b0\u09cd\u09a5\u09a8 \u0995\u09b0\u09c7 \u098f\u09ac\u0982 \u09b8\u09c7\u0987 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7\u09b0 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u098f\u09dc\u09bf\u09df\u09c7(skip) \u099a\u09b2\u09c7\u0964<\/p>\n

\u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8\u0983
\nskip() \u098f\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b0\u09c2\u09aa\u0983<\/p>\n

>db.COLLECTION_NAME.find().limit(NUMBER).skip(NUMBER)<\/p>\n

\u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0983
\n\u09a8\u09bf\u09ae\u09cd\u09a8\u09b2\u09bf\u0996\u09bf\u09a4 \u0989\u09a6\u09be\u09b9\u09a3\u099f\u09bf \u09b6\u09c1\u09a7\u09c1 \u09a6\u09cd\u09ac\u09bf\u09a4\u09c0\u09df \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09ac\u09c7\u0983<\/p>\n

>db.mycol.find({},{“title”:1,_id:0}).limit(1).skip(1)
\n{“title”:”NoSQL Overview”}
\n><\/p>\n

\u0985\u09a8\u09c1\u0997\u09cd\u09b0\u09b9 \u0995\u09b0\u09c7 \u09b2\u0995\u09cd\u09b7\u09cd\u09af \u0995\u09b0\u09c1\u09a8- skip() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09a4\u09c7 \u09a1\u09bf\u09ab\u09b2\u09cd\u099f \u09ae\u09be\u09a8 \u09e6 \u0964<\/p>\n","protected":false},"excerpt":{"rendered":"

MongoDB \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09b8 \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 * Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf MongoDB \u09a4\u09c7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u0995\u09c7 \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u0995\u09b0\u09a4\u09c7 \u09b9\u09b2\u09c7 limit() \u09ae\u09c7\u09a5\u09a1 \u09ac\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7\u0964 Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u098f\u0995 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7\u09b0 \u099f\u09be\u0987\u09aa \u09b8\u09ae\u09b0\u09cd\u09a5\u09a8 \u0995\u09b0\u09c7 \u09af\u09be \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u098f\u09ac\u0982 \u0986\u09aa\u09a8\u09bf \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09a4\u09c7 \u099a\u09be\u0987\u099b\u09c7\u09a8\u0964 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8\u0983 limit() \u098f\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b0\u09c2\u09aa\u0983 >db.COLLECTION_NAME.find().limit(NUMBER) \u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0983 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b2\u09bf\u0996\u09bf\u09a4 \u09a4\u09a5\u09cd\u09af\u09c7\u09b0 \u09b8\u09be\u09a5\u09c7 myycol \u0995\u09be\u09b2\u09c7\u0995\u09b6\u09a8\u099f\u09bf \u09ac\u09bf\u09ac\u09c7\u099a\u09a8\u09be \u0995\u09b0\u09c1\u09a8\u0983 { “_id” : … <\/p>\n

Continue reading<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[222],"tags":[],"class_list":["post-6993","post","type-post","status-publish","format-standard","hentry","category-----mongodb-001","item-wrap"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":6987,"url":"http:\/\/bangla.sitestree.com\/?p=6987","url_meta":{"origin":6993,"position":0},"title":"MongoDB Limit Records","author":"Author-Check- Article-or-Video","date":"April 24, 2015","format":false,"excerpt":"MongoDB \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09b8 \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 \u00a0 Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf MongoDB \u09a4\u09c7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u0995\u09c7 \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u0995\u09b0\u09a4\u09c7 \u09b9\u09b2\u09c7 limit() \u09ae\u09c7\u09a5\u09a1 \u09ac\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7\u0964 Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u098f\u0995 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7\u09b0 \u099f\u09be\u0987\u09aa \u09b8\u09ae\u09b0\u09cd\u09a5\u09a8 \u0995\u09b0\u09c7 \u09af\u09be \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u098f\u09ac\u0982 \u0986\u09aa\u09a8\u09bf \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09a4\u09c7 \u099a\u09be\u0987\u099b\u09c7\u09a8\u0964 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8\u0983 limit() \u098f\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b0\u09c2\u09aa\u0983 >db.COLLECTION_NAME.find().limit(NUMBER) \u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0983 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b2\u09bf\u0996\u09bf\u09a4 \u09a4\u09a5\u09cd\u09af\u09c7\u09b0 \u09b8\u09be\u09a5\u09c7 myycol \u0995\u09be\u09b2\u09c7\u0995\u09b6\u09a8\u099f\u09bf\u2026","rel":"","context":"In "Root"","block_context":{"text":"Root","link":"http:\/\/bangla.sitestree.com\/?cat=1"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7295,"url":"http:\/\/bangla.sitestree.com\/?p=7295","url_meta":{"origin":6993,"position":1},"title":"MongoDB \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09b8","author":"Author-Check- Article-or-Video","date":"March 16, 2015","format":false,"excerpt":"MongoDB \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u09b8 \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 * Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf MongoDB \u09a4\u09c7 \u09b0\u09c7\u0995\u09b0\u09cd\u09a1\u0995\u09c7 \u09b8\u09c0\u09ae\u09be\u09ac\u09a6\u09cd\u09a7 \u0995\u09b0\u09a4\u09c7 \u09b9\u09b2\u09c7 limit() \u09ae\u09c7\u09a5\u09a1 \u09ac\u09be \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7\u0964 Limit() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u098f\u0995 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0\u09c7\u09b0 \u099f\u09be\u0987\u09aa \u09b8\u09ae\u09b0\u09cd\u09a5\u09a8 \u0995\u09b0\u09c7 \u09af\u09be \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09a8\u09be\u09ae\u09cd\u09ac\u09be\u09b0 \u098f\u09ac\u0982 \u0986\u09aa\u09a8\u09bf \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09a8 \u0995\u09b0\u09a4\u09c7 \u099a\u09be\u0987\u099b\u09c7\u09a8\u0964 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8\u0983 limit() \u098f\u09b0 \u09ac\u09c7\u09b8\u09bf\u0995 \u09b8\u09bf\u09a8\u099f\u09cd\u09af\u09be\u0995\u09cd\u09b8 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b0\u09c2\u09aa\u0983 >db.COLLECTION_NAME.find().limit(NUMBER) \u0989\u09a6\u09be\u09b9\u09b0\u09a3\u0983 \u09a8\u09bf\u09ae\u09cd\u09a8\u09b2\u09bf\u0996\u09bf\u09a4 \u09a4\u09a5\u09cd\u09af\u09c7\u09b0 \u09b8\u09be\u09a5\u09c7 myycol \u0995\u09be\u09b2\u09c7\u0995\u09b6\u09a8\u099f\u09bf\u2026","rel":"","context":"In "\u09ae\u0999\u09cd\u0997 \u09a1\u09bf \u09ac\u09bf \u0964 MongoDB"","block_context":{"text":"\u09ae\u0999\u09cd\u0997 \u09a1\u09bf \u09ac\u09bf \u0964 MongoDB","link":"http:\/\/bangla.sitestree.com\/?cat=222"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6985,"url":"http:\/\/bangla.sitestree.com\/?p=6985","url_meta":{"origin":6993,"position":2},"title":"MongoDB Projection","author":"Author-Check- Article-or-Video","date":"March 16, 2015","format":false,"excerpt":"MongoDB \u09aa\u09cd\u09b0\u099c\u09c7\u0995\u09b6\u09a8 \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 MongoDB \u09aa\u09cd\u09b0\u099c\u09c7\u0995\u09b6\u09a8 MongoDB \u09aa\u09cd\u09b0\u099c\u09c7\u0995\u09b6\u09a8\u09c7\u09b0 \u0985\u09b0\u09cd\u09a5 \u09b9\u099a\u09cd\u099b\u09c7 \u098f\u0995\u099f\u09bf \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09b8\u0995\u09b2 \u09a4\u09a5\u09cd\u09af \u09a8\u09bf\u09b0\u09cd\u09ac\u09be\u099a\u09a8 \u09a8\u09be \u0995\u09b0\u09c7 \u09ac\u09b0\u0982 \u09b6\u09c1\u09a7\u09c1\u09ae\u09be\u09a4\u09cd\u09b0 \u09aa\u09cd\u09b0\u09af\u09bc\u09cb\u099c\u09a8\u09c0\u09af\u09bc \u09a4\u09a5\u09cd\u09af \u09a8\u09bf\u09b0\u09cd\u09ac\u09be\u099a\u09a8 \u0995\u09b0\u09be\u0964 \u09af\u09a6\u09bf \u098f\u0995\u099f\u09bf \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0 \u09eb\u099f\u09bf \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0 \u09a5\u09be\u0995\u09c7 \u098f\u09ac\u0982 \u0986\u09aa\u09a8\u09be\u09b0 \u09e9\u099f\u09bf \u09a6\u09c7\u0996\u09be\u09a8\u09cb\u09b0 \u09aa\u09cd\u09b0\u09df\u09cb\u099c\u09a8 \u09b9\u09df \u09a4\u09be\u09b9\u09b2\u09c7 \u098f\u09a6\u09c7\u09b0 \u09ae\u09a7\u09cd\u09af \u09a5\u09c7\u0995\u09c7 \u09b6\u09c1\u09a7\u09c1 \u09e9\u099f\u09bf \u09b8\u09bf\u09b2\u09c7\u0995\u09cd\u099f \u0995\u09b0\u09c1\u09a8\u0964 find() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf MongoDB \u098f\u09b0 find() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u2026","rel":"","context":"In "\u09ae\u0999\u09cd\u0997 \u09a1\u09bf \u09ac\u09bf \u0964 MongoDB"","block_context":{"text":"\u09ae\u0999\u09cd\u0997 \u09a1\u09bf \u09ac\u09bf \u0964 MongoDB","link":"http:\/\/bangla.sitestree.com\/?cat=222"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6979,"url":"http:\/\/bangla.sitestree.com\/?p=6979","url_meta":{"origin":6993,"position":3},"title":"MongoDB Update Document","author":"Author-Check- Article-or-Video","date":"March 25, 2015","format":false,"excerpt":"MongoDB \u0986\u09aa\u09a1\u09c7\u099f \u09a1\u0995\u09c1\u09cd\u09ae\u09c7\u09a8\u09cd\u099f \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 MongoDB \u098f\u09b0 update() \u098f\u09ac\u0982 save() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u098f\u0995\u099f\u09bf \u0995\u09be\u09b2\u09c7\u0995\u09b6\u09a8\u09c7 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u0986\u09aa\u09a1\u09c7\u099f \u0995\u09b0\u09a4\u09c7 \u09ac\u09cd\u09af\u09ac\u09b9\u09c3\u09a4 \u09b9\u09df\u0964 \u09af\u0996\u09a8 save() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09bf\u09a6\u09cd\u09af\u09ae\u09be\u09a8 \u09a8\u09a5\u09bf save() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf\u09cd\u09b0 \u09ae\u09a7\u09cd\u09af\u09c7 \u0997\u09c3\u09b9\u09c0\u09a4 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09b8\u09be\u09a5\u09c7 \u09aa\u09cd\u09b0\u09a4\u09bf\u09b8\u09cd\u09a5\u09be\u09aa\u09a8 \u0995\u09b0\u09c7 \u09a4\u0996\u09a8 update() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09bf\u09a6\u09cd\u09af\u09ae\u09be\u09a8 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u098f\u09b0 value \u09ac\u09be \u09ae\u09be\u09a8\u0995\u09c7 \u0986\u09aa\u09a1\u09c7\u099f \u0995\u09b0\u09c7\u0964 MongoDB update() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf update() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09bf\u09a6\u09cd\u09af\u09ae\u09be\u09a8 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f\u09c7\u09b0\u2026","rel":"","context":"In "Root"","block_context":{"text":"Root","link":"http:\/\/bangla.sitestree.com\/?cat=1"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6989,"url":"http:\/\/bangla.sitestree.com\/?p=6989","url_meta":{"origin":6993,"position":4},"title":"MongoDB Sort Documents . MongoDB \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09ac\u09be\u099b\u09be\u0987","author":"Author-Check- Article-or-Video","date":"March 25, 2015","format":false,"excerpt":"MongoDB \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09ac\u09be\u099b\u09be\u0987 \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 sort() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf MongoDB \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09ac\u09be\u099b\u09be\u0987 \u0995\u09b0\u09a4\u09c7 \u09b9\u09b2\u09c7 \u0986\u09aa\u09a8\u09be\u0995\u09c7 sort() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09a4\u09c7 \u09b9\u09ac\u09c7\u0964 \u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0 \u09a4\u09be\u09b2\u09bf\u0995\u09be \u09a7\u09be\u09b0\u09a3\u0995\u09be\u09b0\u09c0 \u098f\u09ac\u0982 \u09a4\u09be\u09a6\u09c7\u09b0 \u09ac\u09be\u099b\u09be\u0987 \u0995\u09cd\u09b0\u09ae\u09c7\u09b0 \u09b8\u0999\u09cd\u0997\u09c7, sort() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u0997\u09cd\u09b0\u09b9\u09a3 \u0995\u09b0\u09c7\u0964 \u09ac\u09be\u099b\u09be\u0987 \u09aa\u09cd\u09b0\u0995\u09cd\u09b0\u09bf\u09df\u09be \u0989\u09b2\u09cd\u09b2\u09c7\u0996 \u0995\u09b0\u09be\u09b0 \u099c\u09a8\u09cd\u09af 1 \u098f\u09ac\u0982 -1 \u09ac\u09cd\u09af\u09ac\u09b9\u09c3\u09a4 \u09b9\u09df\u0964 1 \u0995\u09cd\u09b0\u09ae \u098a\u09b0\u09cd\u09a7\u09cd\u09ac\u0997\u09be\u09ae\u09c0\u09a4\u09be\u09b0 \u099c\u09a8\u09cd\u09af \u09ac\u09cd\u09af\u09ac\u09b9\u09be\u09b0 \u0995\u09b0\u09be \u09b9\u09af\u09bc \u09af\u0996\u09a8\u2026","rel":"","context":"In "Root"","block_context":{"text":"Root","link":"http:\/\/bangla.sitestree.com\/?cat=1"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":6983,"url":"http:\/\/bangla.sitestree.com\/?p=6983","url_meta":{"origin":6993,"position":5},"title":"MongoDB Delete Document . MongoDB \u09a1\u09bf\u09b2\u09bf\u099f \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f","author":"Author-Check- Article-or-Video","date":"March 6, 2015","format":false,"excerpt":"MongoDB \u09a1\u09bf\u09b2\u09bf\u099f \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09a8\u09df\u09a8 \u099a\u09a8\u09cd\u09a6\u09cd\u09b0 \u09a6\u09a4\u09cd\u09a4 remove() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf MongoDB \u098f\u09b0 remove() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u0995\u09be\u09b2\u09c7\u0995\u09b6\u09a8 \u09a5\u09c7\u0995\u09c7 \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u09a1\u09bf\u09b2\u09bf\u099f \u0995\u09b0\u09a4\u09c7 \u09ac\u09cd\u09af\u09ac\u09b9\u09c3\u09a4 \u09b9\u09df\u0964 \u09a6\u09c1\u099f\u09bf \u09aa\u09cd\u09af\u09be\u09b0\u09be\u09ae\u09bf\u099f\u09be\u09b0 \u09ac\u09be\u09a6\u09c7 \u09b8\u09ac\u0995\u09cd\u09b7\u09c7\u09a4\u09cd\u09b0\u09c7 remove() \u09aa\u09a6\u09cd\u09a7\u09a4\u09bf \u0997\u09cd\u09b0\u09a3\u09af\u09cb\u0997\u09cd\u09af \u09b9\u09df\u0964 \u098f\u0995\u099f\u09bf deletion criteria \u098f\u09ac\u0982 \u0985\u09a8\u09cd\u09af\u099f\u09bf justOne flag \u0964 \u09e7\u0964 deletion criteria: (\u0985\u09aa\u09b6\u09a8\u09be\u09b2) \u09a1\u0995\u09c1\u09ae\u09c7\u09a8\u09cd\u099f \u0985\u09a8\u09c1\u09af\u09be\u09df\u09c0 deletion criteria \u09ae\u09c7\u099b\u09c7 \u09ab\u09c7\u09b2\u09be \u09b9\u09ac\u09c7\u0964 \u09e8\u0964 justOne: \u09af\u09a6\u09bf \u09b8\u09a4\u09cd\u09af\u2026","rel":"","context":"In "\u09ae\u0999\u09cd\u0997 \u09a1\u09bf \u09ac\u09bf \u0964 MongoDB"","block_context":{"text":"\u09ae\u0999\u09cd\u0997 \u09a1\u09bf \u09ac\u09bf \u0964 MongoDB","link":"http:\/\/bangla.sitestree.com\/?cat=222"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"_links":{"self":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/6993","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6993"}],"version-history":[{"count":2,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/6993\/revisions"}],"predecessor-version":[{"id":7144,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=\/wp\/v2\/posts\/6993\/revisions\/7144"}],"wp:attachment":[{"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6993"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6993"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/bangla.sitestree.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6993"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}