{"id":4299,"date":"2024-03-14T01:18:37","date_gmt":"2024-03-14T01:18:37","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-read-data-from-a-database-using-pandas\/"},"modified":"2025-07-31T05:49:14","modified_gmt":"2025-07-31T05:49:14","slug":"how-to-read-data-from-a-database-using-pandas","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-read-data-from-a-database-using-pandas\/","title":{"rendered":"Pandas Read Database Guide"},"content":{"rendered":"<p>To read data from a database using pandas, you first need to establish a connection to the database and then use the read_sql_query function from pandas to retrieve the data. Here is an example code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> pandas <span class=\"hljs-keyword\">as<\/span> pd\r\n<span class=\"hljs-keyword\">import<\/span> sqlite3\r\n\r\n<span class=\"hljs-comment\"># \u8fde\u63a5\u5230\u6570\u636e\u5e93<\/span>\r\nconn = sqlite3.connect(<span class=\"hljs-string\">'database.db'<\/span>)\r\n\r\n<span class=\"hljs-comment\"># \u4f7f\u7528pandas\u8bfb\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e<\/span>\r\nquery = <span class=\"hljs-string\">\"SELECT * FROM table_name\"<\/span>\r\ndf = pd.read_sql_query(query, conn)\r\n\r\n<span class=\"hljs-comment\"># \u6253\u5370\u8bfb\u53d6\u7684\u6570\u636e<\/span>\r\n<span class=\"hljs-built_in\">print<\/span>(df)\r\n\r\n<span class=\"hljs-comment\"># \u5173\u95ed\u6570\u636e\u5e93\u8fde\u63a5<\/span>\r\nconn.close()\r\n<\/code><\/pre>\n<p>In the code above, the database is first connected using the sqlite3 library, then an SQL query is executed and the results are stored in a DataFrame object using the read_sql_query function of pandas. Finally, the DataFrame object is printed to view the retrieved data, and the database connection is closed. Depending on the type of database, the method of connecting to it may vary and adjustments may be necessary accordingly.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To read data from a database using pandas, you first need to establish a connection to the database and then use the read_sql_query function from pandas to retrieve the data. Here is an example code: import pandas as pd import sqlite3 # \u8fde\u63a5\u5230\u6570\u636e\u5e93 conn = sqlite3.connect(&#8216;database.db&#8217;) # \u4f7f\u7528pandas\u8bfb\u53d6\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e query = &#8220;SELECT * FROM table_name&#8221; df [&hellip;]<\/p>\n","protected":false},"author":13,"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":[284,1094,72,3715,125],"class_list":["post-4299","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-database","tag-pandas","tag-python","tag-read_sql","tag-sql"],"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>Pandas Read Database Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Learn to read database data into pandas DataFrames using read_sql_query with examples. 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