{"id":13386,"date":"2024-03-15T06:59:25","date_gmt":"2024-03-15T06:59:25","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-use-conn-execute\/"},"modified":"2025-08-05T17:29:43","modified_gmt":"2025-08-05T17:29:43","slug":"how-to-use-conn-execute","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-use-conn-execute\/","title":{"rendered":"Python SQLite conn.execute: Complete Guide"},"content":{"rendered":"<p>The conn.execute method in Python&#8217;s SQLite3 module is used to run SQL statements. Its usage is as follows:<\/p>\n<pre class=\"post-pre\"><code>conn.execute(sql_statement)\r\n<\/code><\/pre>\n<p>conn is an object of the Connection class in the SQLite3 library, and sql_statement is the SQL statement to be executed in string format.<\/p>\n<p>After executing the SQL statement, conn.execute() will return a Cursor object, which can be used to retrieve the execution results. The results of the query can be obtained using methods provided by the Cursor object, such as:<\/p>\n<ol>\n<li>fetchone(): Retrieve the next row of data from the result set and return a tuple.<\/li>\n<li>fetchall(): Retrieve all rows of data from the result set and return a list containing multiple tuples.<\/li>\n<li>fetchmany(size): retrieves a specified number of rows from the result set, returning a list containing multiple tuples, with the number determined by the size parameter.<\/li>\n<\/ol>\n<p>In addition to query statements, conn.execute() can also execute other types of SQL statements such as insert, update, and delete operations. The number of affected rows can be obtained through the rowcount attribute of the Cursor object.<\/p>\n<p>It is important to note that conn.execute() can only execute one SQL statement. If you need to execute multiple statements, you can use the executescript() method.<\/p>\n<p>Example usage:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> sqlite3\r\n\r\nconn = sqlite3.connect(<span class=\"hljs-string\">'example.db'<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u521b\u5efa\u8868<\/span>\r\nconn.execute(<span class=\"hljs-string\">'''CREATE TABLE IF NOT EXISTS employees\r\n             (id INT PRIMARY KEY     NOT NULL,\r\n             name           TEXT    NOT NULL,\r\n             age            INT     NOT NULL);'''<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u63d2\u5165\u6570\u636e<\/span>\r\nconn.execute(<span class=\"hljs-string\">\"INSERT INTO employees (id, name, age) VALUES (1, 'John', 30)\"<\/span>)\r\nconn.execute(<span class=\"hljs-string\">\"INSERT INTO employees (id, name, age) VALUES (2, 'Alice', 25)\"<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u67e5\u8be2\u6570\u636e<\/span>\r\ncursor = conn.execute(<span class=\"hljs-string\">\"SELECT id, name, age from employees\"<\/span>)\r\nrows = cursor.fetchall()\r\n<span class=\"hljs-keyword\">for<\/span> row <span class=\"hljs-keyword\">in<\/span> rows:\r\n    <span class=\"hljs-built_in\">print<\/span>(row)\r\n\r\n<span class=\"hljs-comment\"># \u66f4\u65b0\u6570\u636e<\/span>\r\nconn.execute(<span class=\"hljs-string\">\"UPDATE employees SET age = 35 WHERE name = 'John'\"<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u5220\u9664\u6570\u636e<\/span>\r\nconn.execute(<span class=\"hljs-string\">\"DELETE FROM employees WHERE name = 'Alice'\"<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u63d0\u4ea4\u4e8b\u52a1<\/span>\r\nconn.commit()\r\n\r\n<span class=\"hljs-comment\"># \u5173\u95ed\u8fde\u63a5<\/span>\r\nconn.close()\r\n<\/code><\/pre>\n<p>The above code demonstrates several common uses of conn.execute(), including creating tables, inserting data, querying data, updating data, and deleting data.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The conn.execute method in Python&#8217;s SQLite3 module is used to run SQL statements. Its usage is as follows: conn.execute(sql_statement) conn is an object of the Connection class in the SQLite3 library, and sql_statement is the SQL statement to be executed in string format. After executing the SQL statement, conn.execute() will return a Cursor object, which [&hellip;]<\/p>\n","protected":false},"author":5,"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":[17830,17833,17832,11702,17831],"class_list":["post-13386","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-conn-execute","tag-database-cursor","tag-python-sql","tag-sqlite-tutorial","tag-sqlite3"],"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>Python SQLite conn.execute: Complete Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn to use Python SQLite conn.execute() to run SQL queries, fetch results, and manage databases effectively.\" \/>\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-use-conn-execute\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Python SQLite conn.execute: Complete Guide\" \/>\n<meta property=\"og:description\" content=\"Learn to use Python SQLite conn.execute() to run SQL queries, fetch results, and manage databases effectively.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-use-conn-execute\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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