{"id":7659,"date":"2024-03-14T06:49:41","date_gmt":"2024-03-14T06:49:41","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-is-the-usage-of-a-left-join-in-a-database\/"},"modified":"2025-08-02T19:06:19","modified_gmt":"2025-08-02T19:06:19","slug":"how-is-the-usage-of-a-left-join-in-a-database","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-is-the-usage-of-a-left-join-in-a-database\/","title":{"rendered":"LEFT JOIN in SQL: Complete Guide"},"content":{"rendered":"<p>In databases, a LEFT JOIN is a type of JOIN operation in an SQL query that selects data from two or more tables.<\/p>\n<p>A LEFT JOIN retrieves all rows from both the left and right tables that meet the join condition. If there are no matching rows in the right table, NULL values are returned.<\/p>\n<p>Here is the grammar.<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">SELECT<\/span> column_name(s)\r\n<span class=\"hljs-keyword\">FROM<\/span> table1\r\n<span class=\"hljs-keyword\">LEFT<\/span> <span class=\"hljs-keyword\">JOIN<\/span> table2\r\n<span class=\"hljs-keyword\">ON<\/span> table1.column_name <span class=\"hljs-operator\">=<\/span> table2.column_name;\r\n<\/code><\/pre>\n<p>In the aforementioned syntax, table1 is the left table, table2 is the right table, and the ON keyword specifies the join condition. A LEFT JOIN will return all rows from table1, along with any matching rows from table2. If there are no matching rows, NULL values will be returned.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In databases, a LEFT JOIN is a type of JOIN operation in an SQL query that selects data from two or more tables. A LEFT JOIN retrieves all rows from both the left and right tables that meet the join condition. If there are no matching rows in the right table, NULL values are returned. [&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":[284,2277,4214,125,569],"class_list":["post-7659","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-database","tag-join-operations","tag-left-join","tag-sql","tag-sql-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>LEFT JOIN in SQL: Complete Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Master SQL LEFT JOIN operations with syntax, examples, and practical database usage tips for beginners.\" \/>\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-is-the-usage-of-a-left-join-in-a-database\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"LEFT JOIN in SQL: Complete Guide\" \/>\n<meta property=\"og:description\" content=\"Master SQL LEFT JOIN operations with syntax, examples, and practical database usage tips for beginners.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-is-the-usage-of-a-left-join-in-a-database\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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