{"id":15239,"date":"2024-03-15T10:47:38","date_gmt":"2024-03-15T10:47:38","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-for-concatenating-and-displaying-the-results-of-an-oracle-query-set\/"},"modified":"2025-08-06T16:55:08","modified_gmt":"2025-08-06T16:55:08","slug":"what-is-the-method-for-concatenating-and-displaying-the-results-of-an-oracle-query-set","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-method-for-concatenating-and-displaying-the-results-of-an-oracle-query-set\/","title":{"rendered":"What is the method for concatenating and displaying the&#8230;"},"content":{"rendered":"<p>In Oracle, the LISTAGG function can be used to concatenate multiple rows of data in a result set into a single string.<\/p>\n<p>Here is an example:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> dept_name, <span class=\"hljs-built_in\">LISTAGG<\/span>(employee_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_name) <span class=\"hljs-keyword\">AS<\/span> employees\r\n<span class=\"hljs-keyword\">FROM<\/span> employees\r\n<span class=\"hljs-keyword\">GROUP<\/span> <span class=\"hljs-keyword\">BY<\/span> dept_name;\r\n<\/code><\/pre>\n<p>In this example, the employees table contains two columns: dept_name and employee_name. Using the LISTAGG function, concatenate the employee names for each department into a comma-separated string and sort them in alphabetical order.<\/p>\n<p>The outcome is akin to the following output:<\/p>\n<pre class=\"post-pre\"><code>DEPT_NAME    | EMPLOYEES\r\n---------------------------------\r\nHR           | John Doe, Mary Smith\r\nIT           | Alice Johnson, Bob Thompson, Sam Lee\r\n<\/code><\/pre>\n<p>The WITHIN GROUP (ORDER BY employee_name) clause in the LISTAGG function is used to specify sorting by the employee_name column. You can choose a different sorting column or opt not to sort at all, as needed.<\/p>\n<p>Please note that the LISTAGG function is available in Oracle 11g and higher versions. If you are using an older version of Oracle, you may need to use other methods to achieve concatenation of the result set, such as using loops or concatenation operators.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In Oracle, the LISTAGG function can be used to concatenate multiple rows of data in a result set into a single string. Here is an example: SELECT dept_name, LISTAGG(employee_name, &#8216;, &#8216;) WITHIN GROUP (ORDER BY employee_name) AS employees FROM employees GROUP BY dept_name; In this example, the employees table contains two columns: dept_name and employee_name. [&hellip;]<\/p>\n","protected":false},"author":12,"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":[453,1402,299,1404,1403],"class_list":["post-15239","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-development","tag-guide","tag-programming","tag-technology","tag-tutorial"],"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>What is the method for concatenating and displaying the... - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn about what is the method for concatenating and displaying the results of an oracle query set?. 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