<\/p>\n
\u0130ki alandaki dizeleri MongoDB’de yeni bir alanda birle\u015ftirmek i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini kullanabilirsiniz:<\/span><\/p>\n Bu \u00f6zel \u00f6rnek, “field1” ve “field2” dizelerini “newfield” adl\u0131 yeni bir alanda birle\u015ftirir ve yeni alan\u0131 myCollection<\/span> adl\u0131 koleksiyona ekler.<\/span><\/p>\n A\u015fa\u011f\u0131daki \u00f6rnek, bu s\u00f6zdiziminin , a\u015fa\u011f\u0131daki belgelere sahip<\/span> bir koleksiyon ekibiyle<\/span> pratikte nas\u0131l kullan\u0131laca\u011f\u0131n\u0131 g\u00f6sterir<\/span> :<\/p>\n “Team” alan\u0131 ve “konferans” alan\u0131ndaki dizeleri “teamConf” adl\u0131 yeni bir alanda birle\u015ftirmek ve bu alan\u0131 ekipler<\/span> koleksiyonuna eklemek i\u00e7in a\u015fa\u011f\u0131daki kodu kullanabiliriz:<\/span><\/p>\n G\u00fcncellenen koleksiyon art\u0131k \u015f\u00f6yle g\u00f6r\u00fcn\u00fcyor:<\/span><\/p>\n Her belgede “ekip” ve “konferans” alanlar\u0131n\u0131n birle\u015fimini i\u00e7eren “teamConf” ba\u015fl\u0131kl\u0131 yeni bir alan\u0131n bulundu\u011funu unutmay\u0131n.<\/span><\/p>\n Bu \u00f6zel \u00f6rnek i\u00e7in, ay\u0131r\u0131c\u0131 olarak k\u0131sa \u00e7izgi kullanarak iki dizeyi birle\u015ftirmeyi se\u00e7tik.<\/span><\/p>\n Ancak iki stringi aralar\u0131nda herhangi bir ay\u0131r\u0131c\u0131 de\u011fer olmadan birle\u015ftirmeyi se\u00e7ebilirdik.<\/span><\/p>\n A\u015fa\u011f\u0131daki kod bunun nas\u0131l yap\u0131laca\u011f\u0131n\u0131 g\u00f6sterir:<\/span><\/p>\n G\u00fcncellenen koleksiyonun \u015f\u00f6yle g\u00f6r\u00fcnece\u011fi:<\/span><\/p>\n “TeamConf” ba\u015fl\u0131kl\u0131 yeni alan\u0131n, aralar\u0131nda herhangi bir ay\u0131rma de\u011feri olmaks\u0131z\u0131n “ekip” ve “konferans” alanlar\u0131n\u0131n birle\u015fimini i\u00e7erdi\u011fini unutmay\u0131n.<\/span><\/p>\n Not<\/strong> : $concat<\/strong> i\u015flevine ili\u015fkin t\u00fcm belgeleri burada<\/a> bulabilirsiniz.<\/span><\/p>\n A\u015fa\u011f\u0131daki e\u011fitimlerde MongoDB’de di\u011fer yayg\u0131n i\u015flemlerin nas\u0131l ger\u00e7ekle\u015ftirilece\u011fi a\u00e7\u0131klanmaktad\u0131r:<\/span><\/p>\n MongoDB: Alan\u0131n bir dize i\u00e7erip i\u00e7ermedi\u011fi nas\u0131l kontrol edilir<\/a> \u0130ki alandaki dizeleri MongoDB’de yeni bir alanda birle\u015ftirmek i\u00e7in a\u015fa\u011f\u0131daki s\u00f6zdizimini kullanabilirsiniz: db.myCollection.aggregate([ { $project : { newfield: { $concat : [ ” $field1 “, ” – “, ” $field2 ” ] } } }, { $merge : “myCollection” } ]) Bu \u00f6zel \u00f6rnek, “field1” ve “field2” dizelerini “newfield” adl\u0131 yeni bir alanda birle\u015ftirir ve […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-2754","post","type-post","status-publish","format-standard","hentry","category-rehber"],"yoast_head":"\n db.myCollection.aggregate([\n { $project<\/span> : { newfield: { $concat<\/span> : [ \" $field1<\/span> \", \" - \", \" $field2<\/span> \" ] } } },\n { $merge<\/span> : \"myCollection\" }\n])\n<\/strong><\/pre>\n db.teams.insertOne({team: \" Mavs<\/span> \", conference: \" Western<\/span> \", points: 31})\ndb.teams.insertOne({team: \" Spurs<\/span> \", conference: \" Western<\/span> \", points: 22})\ndb.teams.insertOne({team: \" Rockets<\/span> \", conference: \" Western<\/span> \", points: 19})\ndb.teams.insertOne({team: \" Celtics<\/span> \", conference: \" Eastern<\/span> \", points: 26})\ndb.teams.insertOne({team: \" Cavs<\/span> \", conference: \" Eastern<\/span> \", points: 33})\ndb.teams.insertOne({team: \" Nets<\/span> \", conference: \" Eastern<\/span> \", points: 38})<\/strong><\/pre>\n \u00d6rnek: MongoDB’de Dizeleri Birle\u015ftirme<\/strong><\/span><\/h3>\n
db.teams.aggregate([\n { $project<\/span> : { teamConf: { $concat<\/span> : [ \" $team<\/span> \", \" - \", \" $conference<\/span> \" ] } } },\n { $merge<\/span> : \"teams\" }\n])<\/strong><\/pre>\n { _id: ObjectId(\"62013d8c4cb04b772fd7a90c\"),\n team: 'Mavs',\n conference: 'Western',\n points: 31,\n teamConf: 'Mavs - Western' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a90d\"),\n team: 'Spurs',\n conference: 'Western',\n points: 22,\n teamConf: 'Spurs - Western' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a90e\"),\n team: 'Rockets',\n conference: 'Western',\n points: 19,\n teamConf: 'Rockets - Western' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a90f\"),\n team: 'Celtics',\n conference: 'Eastern',\n points: 26,\n teamConf: 'Celtics - Eastern' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a910\"),\n team: 'Cavs',\n conference: 'Eastern',\n points: 33,\n teamConf: 'Cavs - Eastern' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a911\"),\n team: 'Nets',\n conference: 'Eastern',\n points: 38,\n teamConf: 'Nets - Eastern' }<\/strong><\/pre>\n db.teams.aggregate([\n { $project<\/span> : { teamConf: { $concat<\/span> : [ \" $team<\/span> \", \" $conference<\/span> \" ] } } },\n { $merge<\/span> : \"teams\" }\n])<\/strong><\/pre>\n { _id: ObjectId(\"62013d8c4cb04b772fd7a90c\"),\n team: 'Mavs',\n conference: 'Western',\n points: 31,\n teamConf: 'MavsWestern' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a90d\"),\n team: 'Spurs',\n conference: 'Western',\n points: 22,\n teamConf: 'SpursWestern' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a90e\"),\n team: 'Rockets',\n conference: 'Western',\n points: 19,\n teamConf: 'RocketWestern' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a90f\"),\n team: 'Celtics',\n conference: 'Eastern',\n points: 26,\n teamConf: 'CelticsEastern' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a910\"),\n team: 'Cavs',\n conference: 'Eastern',\n points: 33,\n teamConf: 'CavsEastern' }\n{ _id: ObjectId(\"62013d8c4cb04b772fd7a911\"),\n team: 'Nets',\n conference: 'Eastern',\n points: 38,\n teamConf: 'NetsEastern' }<\/strong><\/pre>\n Ek kaynaklar<\/strong><\/span><\/h3>\n
MongoDB: Yeni bir alan nas\u0131l eklenir<\/a>
MongoDB: Bir alan nas\u0131l silinir<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"