{"id":25350,"date":"2025-07-05T00:15:19","date_gmt":"2025-07-04T21:15:19","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/"},"modified":"2025-07-05T00:15:19","modified_gmt":"2025-07-04T21:15:19","slug":"postgresql-bir-dizideki-kelime-sayisini-sayma","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/","title":{"rendered":"PostgreSQL: Bir Dizideki Kelime Say\u0131s\u0131n\u0131 Sayma"},"content":{"rendered":"<p># PostgreSQL&#8217;de Bir Metindeki Kelime Say\u0131s\u0131n\u0131 Nas\u0131l Sayar\u0131z?<\/p>\n<p>PostgreSQL veritaban\u0131n\u0131zda saklad\u0131\u011f\u0131n\u0131z metin verilerinde kelime say\u0131s\u0131n\u0131 sayman\u0131z m\u0131 gerekiyor?  Sosyal medya analizinden m\u00fc\u015fteri geri bildirimlerinin de\u011ferlendirilmesine kadar bir\u00e7ok uygulamada bu ihtiyac\u0131 duyabilirsiniz. Bu makale, PostgreSQL kullanarak bir metin i\u00e7indeki kelime say\u0131s\u0131n\u0131 sayman\u0131n farkl\u0131 y\u00f6ntemlerini, performans optimizasyonlar\u0131n\u0131 ve ger\u00e7ek d\u00fcnya senaryolar\u0131n\u0131 ad\u0131m ad\u0131m a\u00e7\u0131klayarak, konuya yeni ba\u015flayanlardan uzmanlara kadar herkese rehberlik edecektir.  PostgreSQL&#8217;in g\u00fc\u00e7l\u00fc metin i\u015fleme fonksiyonlar\u0131n\u0131 kullanarak, verilerinizden en iyi \u015fekilde faydalanman\u0131za yard\u0131mc\u0131 olaca\u011f\u0131z.<\/p>\n<p><strong>PostgreSQL&#8217;de Kelime Say\u0131m\u0131: Temel Kavramlar<\/strong><\/p>\n<p>PostgreSQL, metin verilerini i\u015flemek i\u00e7in g\u00fc\u00e7l\u00fc fonksiyonlar sunar. Kelime say\u0131m\u0131 i\u00e7in temel olarak <code class=\"language-\">regexp_matches<\/code>, <code class=\"language-\">array_length<\/code>, <code class=\"language-\">split_part<\/code> gibi fonksiyonlar\u0131 kullanaca\u011f\u0131z. Bu fonksiyonlar, d\u00fczenli ifadeler (regular expressions) ile metni par\u00e7alara ay\u0131rman\u0131za ve bu par\u00e7alar\u0131n say\u0131s\u0131n\u0131 hesaplaman\u0131za olanak tan\u0131r.  Ancak, noktalama i\u015faretleri, birden fazla bo\u015fluk gibi durumlar, do\u011fru kelime say\u0131s\u0131n\u0131 elde etmemizi engelleyebilir. Bu nedenle, dikkatli bir yakla\u015f\u0131m ve uygun d\u00fczenli ifadelerin kullan\u0131m\u0131 \u00f6nemlidir.  \u00d6rne\u011fin,  &#8220;Merhaba, d\u00fcnya!  Nas\u0131l gidiyor?&#8221; c\u00fcmlesinde kelime say\u0131s\u0131n\u0131 do\u011fru bir \u015fekilde saymak i\u00e7in noktalama i\u015faretlerini ve fazladan bo\u015fluklar\u0131 dikkate almal\u0131y\u0131z.<\/p>\n<p><strong>PostgreSQL&#8217;de Kelime Say\u0131m\u0131: Ad\u0131m Ad\u0131m Uygulamal\u0131 K\u0131lavuz (Yeni Ba\u015flayanlar \u0130\u00e7in)<\/strong><\/p>\n<p>Yeni ba\u015flayanlar i\u00e7in basit bir yakla\u015f\u0131m, <code class=\"language-\">regexp_split_to_array<\/code> fonksiyonunu kullanarak metni bo\u015fluklara g\u00f6re ay\u0131rmak ve olu\u015fan dizinin uzunlu\u011funu bulmakt\u0131r.  Bu y\u00f6ntem, noktalama i\u015faretlerini kelimelerin bir par\u00e7as\u0131 olarak kabul eder.<\/p>\n<pre class=\"language-sql\"><code>CREATE TABLE metinler (\n    id SERIAL PRIMARY KEY,\n    icerik TEXT\n);\n\nINSERT INTO metinler (icerik) VALUES\n('Bu bir \u00f6rnek c\u00fcmledir.'),\n('\u0130ki c\u00fcmle var burada.');\n\nSELECT \n    id,\n    icerik,\n    array_length(regexp_split_to_array(icerik, '\\s+'), 1) as kelime_sayisi\nFROM metinler;<\/code><\/pre>\n<p>Bu sorgu, <code class=\"language-\">icerik<\/code> s\u00fctunundaki metni bo\u015fluk karakterlerine (<code class=\"language-\">\\s+<\/code>) g\u00f6re ay\u0131r\u0131r, olu\u015fan diziyi <code class=\"language-\">regexp_split_to_array<\/code> ile olu\u015fturur ve <code class=\"language-\">array_length<\/code> ile dizinin uzunlu\u011funu (kelime say\u0131s\u0131n\u0131) hesaplar.  Bu, basit bir yakla\u015f\u0131m olsa da, noktalama i\u015faretlerini i\u00e7eren kelimeleri do\u011fru bir \u015fekilde saymayabilir.<\/p>\n<p><strong>Daha Geli\u015fmi\u015f Kelime Say\u0131m\u0131: Noktalama \u0130\u015faretlerini Ele Alma (Orta Seviye)<\/strong><\/p>\n<p>Daha do\u011fru bir sonu\u00e7 i\u00e7in, noktalama i\u015faretlerini temizlememiz gerekir.  Bunun i\u00e7in <code class=\"language-\">regexp_replace<\/code> fonksiyonunu kullanabiliriz.  A\u015fa\u011f\u0131daki \u00f6rnekte, noktalama i\u015faretlerini bo\u015fluklarla de\u011fi\u015ftiriyoruz ve daha sonra ayn\u0131 y\u00f6ntemi kullanarak kelime say\u0131s\u0131n\u0131 hesapl\u0131yoruz.<\/p>\n<pre class=\"language-sql\"><code>SELECT \n    id,\n    icerik,\n    array_length(regexp_split_to_array(regexp_replace(icerik, '[[:punct:]]', ' ', 'g'), '\\s+'), 1) as kelime_sayisi\nFROM metinler;<\/code><\/pre>\n<p>Bu sorgu, <code class=\"language-\">regexp_replace<\/code> fonksiyonu ile t\u00fcm noktalama i\u015faretlerini (<code class=\"language-\">[[:punct:]]<\/code>) bo\u015flukla de\u011fi\u015ftirir (<code class=\"language-\">' '<\/code>) ve <code class=\"language-\">'g'<\/code> bayra\u011f\u0131 t\u00fcm e\u015fle\u015fmeleri de\u011fi\u015ftirir. Daha sonra, \u00f6nceki \u00f6rnekteki gibi, bo\u015fluklara g\u00f6re ay\u0131rma ve dizi uzunlu\u011funu hesaplama i\u015flemlerini ger\u00e7ekle\u015ftirir.<\/p>\n<p><strong>Ger\u00e7ek D\u00fcnya Senaryosu: M\u00fc\u015fteri Yorumlar\u0131 Analizi<\/strong><\/p>\n<p>Bir e-ticaret sitesinin m\u00fc\u015fteri yorumlar\u0131n\u0131 analiz etmek istedi\u011finizi d\u00fc\u015f\u00fcn\u00fcn. Her yorumdaki kelime say\u0131s\u0131n\u0131 sayarak, yorumlar\u0131n uzunlu\u011funu ve dolay\u0131s\u0131yla m\u00fc\u015fterilerin ne kadar detayl\u0131 geri bildirim verdi\u011fini analiz edebilirsiniz.  Bu bilgi, m\u00fc\u015fteri memnuniyetini anlamak ve \u00fcr\u00fcn geli\u015ftirme s\u00fcre\u00e7lerini iyile\u015ftirmek i\u00e7in kullan\u0131labilir.  Yukar\u0131da verilen geli\u015fmi\u015f y\u00f6ntem, bu senaryoda daha do\u011fru sonu\u00e7lar verecektir.<\/p>\n<p><strong>Performans Optimizasyonu ve \u0130pu\u00e7lar\u0131<\/strong><\/p>\n<p>B\u00fcy\u00fck veri k\u00fcmeleri \u00fczerinde \u00e7al\u0131\u015f\u0131rken, performans \u00f6nemli bir fakt\u00f6rd\u00fcr.  A\u015fa\u011f\u0131daki ipu\u00e7lar\u0131 performans\u0131 art\u0131rmaya yard\u0131mc\u0131 olabilir:<\/p>\n<p>* <strong>\u0130ndeksleme:<\/strong> <code class=\"language-\">icerik<\/code> s\u00fctununa bir indeks eklemek, sorgular\u0131n daha h\u0131zl\u0131 \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flayabilir.  Ancak,  tam metin indeksleri bu durumda daha uygun olabilir.<br \/>\n* <strong>Fonksiyonel \u0130ndeksler:<\/strong>  <code class=\"language-\">regexp_replace<\/code> ve <code class=\"language-\">regexp_split_to_array<\/code> fonksiyonlar\u0131n\u0131n birle\u015fik bir fonksiyonel indeksini olu\u015fturmak, performans\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rabilir.<br \/>\n* <strong>Par\u00e7alama:<\/strong> \u00c7ok b\u00fcy\u00fck metin verilerini daha k\u00fc\u00e7\u00fck par\u00e7alara b\u00f6lmek ve daha sonra her par\u00e7ay\u0131 ayr\u0131 ayr\u0131 i\u015flemek performans\u0131 art\u0131rabilir.<br \/>\n* <strong>PostgreSQL s\u00fcr\u00fcm\u00fcne g\u00f6re optimizasyon:<\/strong> Farkl\u0131 PostgreSQL s\u00fcr\u00fcmleri farkl\u0131 performans \u00f6zelliklerine sahip olabilir.  En son s\u00fcr\u00fcmleri kullanman\u0131z \u00f6nerilir.<\/p>\n<p><strong>\u0130leri D\u00fczey Teknikler: Edge Case&#8217;ler ve Performans Analizi<\/strong><\/p>\n<p>\u00c7ok b\u00fcy\u00fck metin verileriyle \u00e7al\u0131\u015f\u0131rken,  performans analizi ve edge case&#8217;leri ele almak \u00f6nemlidir.  \u00d6rne\u011fin, \u00e7ok uzun metinler veya \u00f6zel karakterler i\u00e7eren metinler, performans\u0131 etkileyebilir.  Bu durumlarda, daha geli\u015fmi\u015f d\u00fczenli ifadeler veya farkl\u0131 yakla\u015f\u0131m y\u00f6ntemleri gerekebilir.  Ayr\u0131ca, <code class=\"language-\">EXPLAIN ANALYZE<\/code> komutu ile sorgular\u0131n performans\u0131n\u0131 analiz ederek, darbo\u011fazlar\u0131 belirleyebilir ve optimizasyon yapabilirsiniz.  \u00d6rne\u011fin, \u00e7ok say\u0131da bo\u015fluk i\u00e7eren metinlerde, <code class=\"language-\">\\s+<\/code> yerine daha spesifik bir d\u00fczenli ifade kullanmak performans\u0131 art\u0131rabilir.<\/p>\n<p><strong>PostgreSQL&#8217;de Kelime Say\u0131m\u0131: Sonu\u00e7 ve S\u0131k\u00e7a Sorulan Sorular<\/strong><\/p>\n<p>Bu makalede, PostgreSQL&#8217;de metin verilerindeki kelime say\u0131s\u0131n\u0131 sayman\u0131n farkl\u0131 y\u00f6ntemlerini inceledik.  Basit y\u00f6ntemlerden geli\u015fmi\u015f tekniklere ve performans optimizasyonlar\u0131na kadar geni\u015f bir yelpazede bilgi payla\u015ft\u0131k. Do\u011fru y\u00f6ntemi se\u00e7mek, verilerinize ve performans gereksinimlerinize ba\u011fl\u0131d\u0131r.<\/p>\n<p><strong>S\u0131k\u00e7a Sorulan Sorular:<\/strong><\/p>\n<p>1. <strong>Noktalama i\u015faretlerini tamamen kald\u0131rmak m\u00fcmk\u00fcn m\u00fc?<\/strong> Evet, <code class=\"language-\">regexp_replace<\/code> fonksiyonunu kullanarak noktalama i\u015faretlerini tamamen kald\u0131rabilirsiniz.<br \/>\n2. <strong>\u00c7oklu bo\u015fluklar\u0131 nas\u0131l ele alabilirim?<\/strong> <code class=\"language-\">\\s+<\/code> d\u00fczenli ifadesi bir veya daha fazla bo\u015flu\u011fu e\u015fle\u015ftirir, bu nedenle \u00e7oklu bo\u015fluklar otomatik olarak tek bir bo\u015flu\u011fa d\u00f6n\u00fc\u015ft\u00fcr\u00fcl\u00fcr.<br \/>\n3. <strong>Tam metin indeksleri kullanman\u0131n avantajlar\u0131 nelerdir?<\/strong> Tam metin indeksleri, metin verilerinde kelime aramalar\u0131n\u0131 h\u0131zland\u0131r\u0131r ve kelime say\u0131m\u0131 sorgular\u0131nda da performans art\u0131\u015f\u0131 sa\u011flayabilir.<br \/>\n4. <strong>Farkl\u0131 dillerdeki metinleri nas\u0131l i\u015fleyebilirim?<\/strong>  Farkl\u0131 dillerdeki metinler i\u00e7in, dil \u00f6zelliklerini dikkate alan d\u00fczenli ifadeler veya \u00f6zel i\u015fleme y\u00f6ntemleri kullanman\u0131z gerekebilir.<br \/>\n5. <strong>\u00c7ok b\u00fcy\u00fck metinlerde performans nas\u0131l iyile\u015ftirilebilir?<\/strong>  B\u00fcy\u00fck metinler i\u00e7in, par\u00e7alama, fonksiyonel indeksler ve tam metin indeksleri kullanarak performans\u0131 art\u0131rabilirsiniz.  [fatihsoysal.com](https:\/\/fatihsoysal.com) sitesinden PostgreSQL performans optimizasyonu ile ilgili daha fazla bilgi edinebilirsiniz.<\/p>\n<p>Yazar: Fatih Soysal<\/p>\n","protected":false},"excerpt":{"rendered":"# PostgreSQL&#8217;de Bir Metindeki Kelime Say\u0131s\u0131n\u0131 Nas\u0131l Sayar\u0131z? PostgreSQL veritaban\u0131n\u0131zda saklad\u0131\u011f\u0131n\u0131z metin verilerinde kelime say\u0131s\u0131n\u0131 sayman\u0131z m\u0131 gerekiyor?&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-25350","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) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>PostgreSQL: Bir Dizideki Kelime Say\u0131s\u0131n\u0131 Sayma<\/title>\n<meta name=\"description\" content=\"Hi\u00e7bir etiketi bulunamad\u0131.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PostgreSQL: Bir Dizideki Kelime Say\u0131s\u0131n\u0131 Sayma\" \/>\n<meta property=\"og:description\" content=\"Hi\u00e7bir etiketi bulunamad\u0131.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/\" \/>\n<meta property=\"og:site_name\" content=\"Kodlar\u0131n Gizemli D\u00fcnyas\u0131\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-04T21:15:19+00:00\" \/>\n<meta name=\"author\" content=\"Fatih Soysal\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Yazan:\" \/>\n\t<meta name=\"twitter:data1\" content=\"Fatih Soysal\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tahmini okuma s\u00fcresi\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 dakika\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/\"},\"author\":{\"name\":\"Fatih Soysal\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"headline\":\"PostgreSQL: Bir Dizideki Kelime Say\u0131s\u0131n\u0131 Sayma\",\"datePublished\":\"2025-07-04T21:15:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/\"},\"wordCount\":960,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#\/schema\/person\/002a254750921dcfd568a99e48240dd1\"},\"articleSection\":[\"PostgreSQL\"],\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/#respond\"]}],\"copyrightYear\":\"2025\",\"copyrightHolder\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/\",\"name\":\"PostgreSQL: Bir Dizideki Kelime Say\u0131s\u0131n\u0131 Sayma\",\"isPartOf\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\"},\"datePublished\":\"2025-07-04T21:15:19+00:00\",\"description\":\"Hi\u00e7bir etiketi bulunamad\u0131.\",\"breadcrumb\":{\"@id\":\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/#breadcrumb\"},\"inLanguage\":\"tr\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/postgresql-bir-dizideki-kelime-sayisini-sayma\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Anasayfa\",\"item\":\"https:\/\/fatihsoysal.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"PostgreSQL: Bir Dizideki Kelime Say\u0131s\u0131n\u0131 Sayma\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/fatihsoysal.com\/blog\/#website\",\"url\":\"https:\/\/fatihsoysal.com\/blog\/\",\"name\":\"Fatihsoysal.com\",\"description\":\"Blog - 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