{"id":7838,"date":"2024-03-14T07:09:44","date_gmt":"2024-03-14T07:09:44","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-concatenate-multiple-rows-of-data-in-oracle-into-one-row\/"},"modified":"2025-08-02T21:25:43","modified_gmt":"2025-08-02T21:25:43","slug":"how-to-concatenate-multiple-rows-of-data-in-oracle-into-one-row","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-concatenate-multiple-rows-of-data-in-oracle-into-one-row\/","title":{"rendered":"Oracle LISTAGG: Concatenate Rows into One"},"content":{"rendered":"<p>You can use the LISTAGG function in Oracle to concatenate multiple rows of data into one row. The syntax of the LISTAGG function is as follows:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-built_in\">LISTAGG<\/span>(expression, delimiter) <span class=\"hljs-keyword\">WITHIN<\/span> <span class=\"hljs-keyword\">GROUP<\/span> (<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span> order_by_clause)\r\n<\/code><\/pre>\n<p>In this case, expression refers to the column or expression to be concatenated, delimiter is the character used as a separator, and order_by_clause is the column or expression specifying the order of concatenation.<\/p>\n<p>For example, let&#8217;s say there is a table called &#8220;employee&#8221; that contains the following data:<\/p>\n<table>Employee ID<br \/>\nFirst Name<br \/>\nLast Name<\/p>\n<p>1<br \/>\nJohn<br \/>\nSmith<\/p>\n<p>2<br \/>\nJane<br \/>\nDoe<\/table>\n<p>To concatenate these data into one line, you can use the following query:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> <span class=\"hljs-built_in\">LISTAGG<\/span>(first_name <span class=\"hljs-operator\">||<\/span> <span class=\"hljs-string\">' '<\/span> <span class=\"hljs-operator\">||<\/span> last_name, <span class=\"hljs-string\">', '<\/span>) <span class=\"hljs-keyword\">WITHIN<\/span> <span class=\"hljs-keyword\">GROUP<\/span> (<span class=\"hljs-keyword\">ORDER<\/span> <span class=\"hljs-keyword\">BY<\/span> employee_id) <span class=\"hljs-keyword\">AS<\/span> full_name\r\n<span class=\"hljs-keyword\">FROM<\/span> employee;\r\n<\/code><\/pre>\n<p>This will output: John Smith, Jane Doe.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>You can use the LISTAGG function in Oracle to concatenate multiple rows of data into one row. The syntax of the LISTAGG function is as follows: LISTAGG(expression, delimiter) WITHIN GROUP (ORDER BY order_by_clause) In this case, expression refers to the column or expression to be concatenated, delimiter is the character used as a separator, and [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[10210,10209,10208,7842,5038],"class_list":["post-7838","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-aggregate-functions-oracle","tag-combine-data-oracle","tag-concatenate-rows-oracle","tag-oracle-listagg","tag-oracle-sql-functions"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Oracle LISTAGG: Concatenate Rows into One - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn how to use Oracle LISTAGG function to concatenate multiple rows into one. Complete guide with syntax examples.\" \/>\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.silicloud.com\/blog\/how-to-concatenate-multiple-rows-of-data-in-oracle-into-one-row\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Oracle LISTAGG: Concatenate Rows into One\" \/>\n<meta property=\"og:description\" content=\"Learn how to use Oracle LISTAGG function to concatenate multiple rows into one. 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