{"id":38039,"date":"2025-07-28T08:43:36","date_gmt":"2025-07-28T08:43:36","guid":{"rendered":"https:\/\/entri.app\/question-answer\/what-is-a-self-join\/"},"modified":"2025-07-28T08:43:36","modified_gmt":"2025-07-28T08:43:36","slug":"what-is-a-self-join","status":"publish","type":"post","link":"https:\/\/entri.app\/question-answer\/what-is-a-self-join\/","title":{"rendered":"What is a Self Join?"},"content":{"rendered":"

A Self Join is a regular join, but the table is joined with itself. This is useful for querying hierarchical data or comparing rows within the same table (e.g., finding employees who have the same manager).<\/p>\n","protected":false},"excerpt":{"rendered":"

A Self Join is a regular join, but the table is joined with itself. This is useful for querying hierarchical data or comparing rows within the same table (e.g., finding employees who have the same manager).<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[538],"tags":[],"class_list":["post-38039","post","type-post","status-publish","format-standard","hentry","category-mysql"],"acf":[],"yoast_head":"\nWhat is a Self Join?<\/title>\n<meta name=\"description\" content=\"What is a Self Join? : Find the answer with a detailed explanation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/entri.app\/question-answer\/what-is-a-self-join\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is a Self Join?\" \/>\n<meta property=\"og:description\" content=\"What is a Self Join? 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