{"id":25608,"date":"2025-07-09T15:16:36","date_gmt":"2025-07-09T12:16:36","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/postgresql-json-dizilerini-karsilastirma\/"},"modified":"2025-07-09T15:16:36","modified_gmt":"2025-07-09T12:16:36","slug":"postgresql-json-dizilerini-karsilastirma","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/postgresql-json-dizilerini-karsilastirma\/","title":{"rendered":"PostgreSQL: JSON Dizilerini Kar\u015f\u0131la\u015ft\u0131rma"},"content":{"rendered":"<p># PostgreSQL JSON Dizilerini Kar\u015f\u0131la\u015ft\u0131rma: Tam Bir Rehber<\/p>\n<p>PostgreSQL veritaban\u0131n\u0131zda JSON verisi mi sakl\u0131yorsunuz ve bu verilerin i\u00e7indeki dizileri kar\u015f\u0131la\u015ft\u0131rman\u0131z m\u0131 gerekiyor?  \u00d6rne\u011fin, bir e-ticaret uygulamas\u0131nda kullan\u0131c\u0131lar\u0131n sepetlerindeki \u00fcr\u00fcnleri, veya bir sosyal medya platformunda kullan\u0131c\u0131lar\u0131n takip etti\u011fi hesaplar\u0131 JSON dizileri olarak saklad\u0131\u011f\u0131n\u0131z\u0131 d\u00fc\u015f\u00fcn\u00fcn.  Bu dizilerin e\u015fit olup olmad\u0131\u011f\u0131n\u0131, birinin di\u011ferini i\u00e7erip i\u00e7ermedi\u011fini veya aralar\u0131ndaki farklar\u0131 nas\u0131l tespit edece\u011finizi bilmek, veritaban\u0131 sorgular\u0131n\u0131z\u0131 optimize etmek ve do\u011fru sonu\u00e7lar elde etmek i\u00e7in hayati \u00f6nem ta\u015f\u0131r. Bu makale, PostgreSQL&#8217;de JSON dizilerini kar\u015f\u0131la\u015ft\u0131rman\u0131n farkl\u0131 y\u00f6ntemlerini, performans optimizasyonlar\u0131n\u0131 ve olas\u0131 sorunlar\u0131 ad\u0131m ad\u0131m a\u00e7\u0131klayacakt\u0131r.<\/p>\n<p><strong>JSON Dizileriyle \u00c7al\u0131\u015fmaya Giri\u015f<\/strong><\/p>\n<p>PostgreSQL&#8217;in JSON veri tipini kullanarak verilerinizi saklamak, esneklik sa\u011flar ancak kar\u015f\u0131la\u015ft\u0131rma i\u015flemlerini biraz daha karma\u015f\u0131k hale getirir.  Standart SQL operat\u00f6rleri do\u011frudan JSON dizileri \u00fczerinde tam anlam\u0131yla \u00e7al\u0131\u015fmaz.  Bu nedenle, PostgreSQL&#8217;in sundu\u011fu \u00f6zel fonksiyonlar\u0131 ve operat\u00f6rlerini kullanarak JSON dizilerini kar\u015f\u0131la\u015ft\u0131rmal\u0131y\u0131z.  \u00d6ncelikle temel kavramlar\u0131 hat\u0131rlayal\u0131m:<\/p>\n<p>* <strong>JSON Dizisi:<\/strong>  K\u00f6\u015feli parantezler (<code class=\"language-\">[]<\/code>) ile \u00e7evrili, virg\u00fclle ayr\u0131lm\u0131\u015f JSON de\u011ferlerinden olu\u015fan bir yap\u0131d\u0131r. \u00d6rnek: <code class=\"language-\">['elma', 'armut', 'muz']<\/code><\/p>\n<p>* <strong>JSON Operat\u00f6rleri:<\/strong> PostgreSQL, <code class=\"language-\">@><\/code>, <code class=\"language-\"><@<\/code>, <code class=\"language-\">?<\/code>, <code class=\"language-\">?&<\/code> gibi JSON operat\u00f6rleri sunar. Bu operat\u00f6rler, JSON dok\u00fcmanlar\u0131n\u0131n kar\u015f\u0131la\u015ft\u0131r\u0131lmas\u0131nda kullan\u0131l\u0131r.<\/p>\n<p>* <strong>JSON Fonksiyonlar\u0131:<\/strong> <code class=\"language-\">jsonb_array_elements<\/code>, <code class=\"language-\">jsonb_agg<\/code>, <code class=\"language-\">jsonb_contains<\/code> gibi fonksiyonlar, JSON dizilerinin elemanlar\u0131na eri\u015fim sa\u011flamak ve i\u015flemler yapmak i\u00e7in kullan\u0131l\u0131r.  Bu fonksiyonlar, \u00f6zellikle karma\u015f\u0131k kar\u015f\u0131la\u015ft\u0131rma senaryolar\u0131nda olduk\u00e7a faydal\u0131d\u0131r.<\/p>\n<p><strong>JSON Dizilerini Kar\u015f\u0131la\u015ft\u0131rman\u0131n Farkl\u0131 Y\u00f6ntemleri:  Nas\u0131l Yap\u0131l\u0131r?<\/strong><\/p>\n<p>JSON dizilerini kar\u015f\u0131la\u015ft\u0131rmak i\u00e7in farkl\u0131 senaryolar ve ihtiya\u00e7lar do\u011frultusunda \u00e7e\u015fitli y\u00f6ntemler kullan\u0131labilir.  \u0130\u015fte en yayg\u0131n y\u00f6ntemler ve bunlar\u0131n kullan\u0131m \u00f6rnekleri:<\/p>\n<p><strong># 1. Tam E\u015fle\u015fme Kontrol\u00fc: <code class=\"language-\">=<\/code> Operat\u00f6r\u00fc<\/strong><\/p>\n<p>E\u011fer iki JSON dizisinin tamamen ayn\u0131 olup olmad\u0131\u011f\u0131n\u0131 kontrol etmek istiyorsan\u0131z, basit\u00e7e <code class=\"language-\">=<\/code> operat\u00f6r\u00fcn\u00fc kullanabilirsiniz.  Ancak, bu y\u00f6ntem sadece elemanlar\u0131n s\u0131ras\u0131n\u0131n ve de\u011ferlerinin tamamen ayn\u0131 olmas\u0131 durumunda do\u011fru sonu\u00e7 verir.<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM urunler WHERE sepet = '[&quot;elma&quot;, &quot;armut&quot;, &quot;muz&quot;]';<\/code><\/pre>\n<p>Bu sorgu, <code class=\"language-\">sepet<\/code> s\u00fctununda <code class=\"language-\">[\"elma\", \"armut\", \"muz\"]<\/code> de\u011ferine sahip \u00fcr\u00fcnleri getirir. S\u0131ra \u00f6nemlidir; <code class=\"language-\">[\"armut\", \"elma\", \"muz\"]<\/code> farkl\u0131 bir dizi olarak kabul edilir.<\/p>\n<p><strong># 2. Alt K\u00fcme Kontrol\u00fc: <code class=\"language-\">@><\/code> Operat\u00f6r\u00fc (\u0130\u00e7erme Kontrol\u00fc)<\/strong><\/p>\n<p>Bir JSON dizisinin di\u011ferini i\u00e7erip i\u00e7ermedi\u011fini kontrol etmek i\u00e7in <code class=\"language-\">@><\/code> operat\u00f6r\u00fcn\u00fc kullanabiliriz.  Bu operat\u00f6r, soldaki dizinin sa\u011fdaki diziyi i\u00e7erip i\u00e7ermedi\u011fini kontrol eder.<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM urunler WHERE sepet @&gt; '[&quot;elma&quot;, &quot;armut&quot;]';<\/code><\/pre>\n<p>Bu sorgu, <code class=\"language-\">sepet<\/code> s\u00fctununda \"elma\" ve \"armut\" \u00f6\u011felerini i\u00e7eren t\u00fcm \u00fcr\u00fcnleri getirir.  Di\u011fer \u00f6\u011felerin varl\u0131\u011f\u0131 veya yoklu\u011fu \u00f6nemli de\u011fildir.<\/p>\n<p><strong># 3. \u00dcst K\u00fcme Kontrol\u00fc: <code class=\"language-\"><@<\/code> Operat\u00f6r\u00fc (\u0130\u00e7erilme Kontrol\u00fc)<\/strong><\/p>\n<p>Tam tersine, bir JSON dizisinin ba\u015fka bir JSON dizisi taraf\u0131ndan i\u00e7erilip i\u00e7erilmedi\u011fini kontrol etmek i\u00e7in <code class=\"language-\"><@<\/code> operat\u00f6r\u00fcn\u00fc kullan\u0131r\u0131z.<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM urunler WHERE sepet &lt;@ '[&quot;elma&quot;, &quot;armut&quot;, &quot;muz&quot;, &quot;kiraz&quot;]';<\/code><\/pre>\n<p>Bu sorgu, <code class=\"language-\">sepet<\/code> s\u00fctunu <code class=\"language-\">[\"elma\", \"armut\", \"muz\", \"kiraz\"]<\/code> dizisinin alt k\u00fcmesi olan \u00fcr\u00fcnleri getirir.<\/p>\n<p><strong># 4. Eleman Kontrol\u00fc: <code class=\"language-\">?<\/code> Operat\u00f6r\u00fc<\/strong><\/p>\n<p>Belirli bir eleman\u0131n JSON dizisi i\u00e7inde olup olmad\u0131\u011f\u0131n\u0131 kontrol etmek i\u00e7in <code class=\"language-\">?<\/code> operat\u00f6r\u00fcn\u00fc kullanabiliriz.<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM urunler WHERE sepet ? 'elma';<\/code><\/pre>\n<p>Bu sorgu, <code class=\"language-\">sepet<\/code> s\u00fctununda \"elma\" eleman\u0131n\u0131 i\u00e7eren \u00fcr\u00fcnleri getirir.<\/p>\n<p><strong># 5. Elemanlar\u0131n Varl\u0131k Kontrol\u00fc: <code class=\"language-\">?&<\/code> Operat\u00f6r\u00fc<\/strong><\/p>\n<p>Birden fazla eleman\u0131n JSON dizisi i\u00e7inde olup olmad\u0131\u011f\u0131n\u0131 kontrol etmek i\u00e7in <code class=\"language-\">?&<\/code> operat\u00f6r\u00fcn\u00fc kullanabiliriz.<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM urunler WHERE sepet ?&amp; array['elma', 'muz'];<\/code><\/pre>\n<p>Bu sorgu, <code class=\"language-\">sepet<\/code> s\u00fctununda hem \"elma\" hem de \"muz\" elemanlar\u0131n\u0131 i\u00e7eren \u00fcr\u00fcnleri getirir.<\/p>\n<p><strong>\u00d6\u011frenme Yol Haritas\u0131<\/strong><\/p>\n<p><strong>Yeni Ba\u015flayan:<\/strong><\/p>\n<p><strong>Ad\u0131m 1:<\/strong>  PostgreSQL'de bir tablo olu\u015fturun ve JSONB s\u00fctununa JSON dizileri ekleyin.<\/p>\n<pre class=\"language-sql\"><code>CREATE TABLE urunler (\n    id SERIAL PRIMARY KEY,\n    sepet JSONB\n);\n\nINSERT INTO urunler (sepet) VALUES\n('[&quot;elma&quot;, &quot;armut&quot;]'),\n('[&quot;muz&quot;, &quot;elma&quot;]'),\n('[&quot;elma&quot;, &quot;armut&quot;, &quot;muz&quot;]'),\n('[&quot;kiraz&quot;]');<\/code><\/pre>\n<p><strong>Ad\u0131m 2:<\/strong>  Yukar\u0131da a\u00e7\u0131klanan temel operat\u00f6rleri kullanarak basit kar\u015f\u0131la\u015ft\u0131rmalar yap\u0131n.  \u00d6rne\u011fin, <code class=\"language-\">sepet<\/code> s\u00fctununda \"elma\" i\u00e7eren sat\u0131rlar\u0131 se\u00e7in:<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM urunler WHERE sepet ? 'elma';<\/code><\/pre>\n<p><strong>Orta Seviye:<\/strong><\/p>\n<p><strong>Ger\u00e7ek Hayat \u00d6rne\u011fi:<\/strong> Bir sosyal medya uygulamas\u0131nda, kullan\u0131c\u0131lar\u0131n takip etti\u011fi ki\u015filerin listesini JSON dizisi olarak saklad\u0131\u011f\u0131m\u0131z\u0131 varsayal\u0131m.  A\u015fa\u011f\u0131daki sorgu, \"fatihsoysal\" kullan\u0131c\u0131s\u0131n\u0131 takip eden kullan\u0131c\u0131lar\u0131 bulmam\u0131za olanak tan\u0131r:<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM kullanicilar WHERE takip_edilenler @&gt; '[&quot;fatihsoysal&quot;]';<\/code><\/pre>\n<p><strong>Optimizasyon \u0130pu\u00e7lar\u0131:<\/strong>  <code class=\"language-\">jsonb<\/code> veri tipi, <code class=\"language-\">json<\/code> veri tipine g\u00f6re daha h\u0131zl\u0131 performans sa\u011flar.  M\u00fcmk\u00fcnse, <code class=\"language-\">jsonb<\/code> kullan\u0131n.  Ayr\u0131ca, indeksleme performans\u0131 art\u0131rmak i\u00e7in <code class=\"language-\">GIN<\/code> indeksleri kullanabilirsiniz.<\/p>\n<p><strong>\u0130leri Seviye:<\/strong><\/p>\n<p><strong>Performans Analizi:<\/strong> B\u00fcy\u00fck veri k\u00fcmeleri i\u00e7in, <code class=\"language-\">jsonb_path_query_first<\/code> gibi daha geli\u015fmi\u015f fonksiyonlar kullanarak performans\u0131 optimize edebilirsiniz.  Karma\u015f\u0131k sorgular i\u00e7in, <code class=\"language-\">EXPLAIN ANALYZE<\/code> komutuyla sorgu plan\u0131n\u0131 inceleyin ve gerekli optimizasyonlar\u0131 yap\u0131n.<\/p>\n<p><strong>Edge Case'ler:<\/strong>  Bo\u015f diziler (<code class=\"language-\">[]<\/code>), null de\u011ferler ve farkl\u0131 veri tiplerinin bir arada kullan\u0131m\u0131 gibi durumlar\u0131 g\u00f6z \u00f6n\u00fcnde bulundurun.  Bu durumlar i\u00e7in ek kontroller eklemek gerekebilir.  \u00d6rne\u011fin, bo\u015f bir dizi kontrol\u00fc i\u00e7in:<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM urunler WHERE sepet &lt;&gt; '[]';<\/code><\/pre>\n<p><strong>Vaka Analizi: E-Ticaret Uygulamas\u0131<\/strong><\/p>\n<p>Bir e-ticaret uygulamas\u0131nda, kullan\u0131c\u0131lar\u0131n sepetlerindeki \u00fcr\u00fcnleri JSON dizisi olarak sakl\u0131yoruz.  A\u015fa\u011f\u0131daki senaryoyu ele alal\u0131m:<\/p>\n<p><strong>Senaryo:<\/strong>  Sepetlerinde \"elma\" ve \"muz\" bulunan kullan\u0131c\u0131lar\u0131 tespit etmek istiyoruz.<\/p>\n<p><strong>\u00c7\u00f6z\u00fcm:<\/strong>  <code class=\"language-\">?&<\/code> operat\u00f6r\u00fcn\u00fc kullanarak bu sorguyu yazabiliriz:<\/p>\n<pre class=\"language-sql\"><code>SELECT * FROM kullanicilar WHERE sepet ?&amp; array['elma', 'muz'];<\/code><\/pre>\n<p>Bu sorgu, hem \"elma\" hem de \"muz\" \u00fcr\u00fcnlerini sepetlerinde bulunduran kullan\u0131c\u0131lar\u0131n bilgilerini getirir.<\/p>\n<p><strong>Sonu\u00e7<\/strong><\/p>\n<p>PostgreSQL'de JSON dizilerini kar\u015f\u0131la\u015ft\u0131rmak, verilerin yap\u0131s\u0131 ve kar\u015f\u0131la\u015ft\u0131rma gereksinimlerine ba\u011fl\u0131 olarak farkl\u0131 y\u00f6ntemler gerektirir.  Bu makalede ele ald\u0131\u011f\u0131m\u0131z y\u00f6ntemler ve \u00f6rnekler, farkl\u0131 senaryolarda do\u011fru ve verimli sorgular yazman\u0131za yard\u0131mc\u0131 olacakt\u0131r.  <code class=\"language-\">jsonb<\/code> veri tipi ve uygun indekslerin kullan\u0131m\u0131, performans\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131racakt\u0131r.  Karma\u015f\u0131k sorgularda, sorgu plan\u0131n\u0131 analiz ederek performans\u0131 optimize etmeyi unutmay\u0131n.  Daha fazla bilgi i\u00e7in [fatihsoysal.com](https:\/\/fatihsoysal.com) adresini ziyaret edebilirsiniz.<\/p>\n<p><strong>S\u0131k\u00e7a Sorulan Sorular:<\/strong><\/p>\n<p>1. <strong>JSON ve JSONB aras\u0131ndaki fark nedir?<\/strong>  <code class=\"language-\">JSONB<\/code> veri tipi, <code class=\"language-\">JSON<\/code> veri tipine g\u00f6re daha verimlidir ve indekslenebilir.<\/p>\n<p>2. <strong>GIN indeksleri nas\u0131l kullan\u0131l\u0131r?<\/strong>  <code class=\"language-\">CREATE INDEX idx_sepet ON urunler USING GIN (sepet);<\/code> komutu ile <code class=\"language-\">sepet<\/code> s\u00fctununa GIN indeksi ekleyebilirsiniz.<\/p>\n<p>3. <strong>Bo\u015f JSON dizilerini nas\u0131l ele alabilirim?<\/strong>  <code class=\"language-\">sepet <> '[]'<\/code> ko\u015fulunu kullanarak bo\u015f dizileri filtreleyebilirsiniz.<\/p>\n<p>4. <strong>Null de\u011ferleri nas\u0131l kontrol edebilirim?<\/strong>  <code class=\"language-\">sepet IS NOT NULL<\/code> ko\u015fulunu kullanarak null de\u011ferleri filtreleyebilirsiniz.<\/p>\n<p>5. <strong>Farkl\u0131 veri tiplerini i\u00e7eren JSON dizilerini nas\u0131l kar\u015f\u0131la\u015ft\u0131r\u0131r\u0131m?<\/strong>  Veri tiplerini d\u00f6n\u00fc\u015ft\u00fcrmeniz veya \u00f6zel fonksiyonlar kullanman\u0131z gerekebilir.<\/p>\n<p>Yazar: Fatih Soysal<\/p>\n","protected":false},"excerpt":{"rendered":"# PostgreSQL JSON Dizilerini Kar\u015f\u0131la\u015ft\u0131rma: Tam Bir Rehber PostgreSQL veritaban\u0131n\u0131zda JSON verisi mi sakl\u0131yorsunuz ve bu verilerin i\u00e7indeki&hellip;","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_page_header_type":"","csco_page_load_nextpost":"","csco_page_subscribe_form":"","csco_page_contact_form":"","footnotes":""},"categories":[644],"tags":[],"class_list":{"0":"post-25608","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-postgresql","7":"cs-entry","8":"cs-video-wrap"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v20.5 (Yoast SEO v25.3.1) - 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