{"id":1490,"date":"2020-06-05T16:23:04","date_gmt":"2020-06-05T08:23:04","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1490"},"modified":"2020-06-05T16:23:04","modified_gmt":"2020-06-05T08:23:04","slug":"python%e9%80%9a%e8%bf%87load-data%e5%af%bc%e5%85%a5mysql%e6%95%b0%e6%8d%ae","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1490","title":{"rendered":"Python\u901a\u8fc7load data\u5bfc\u5165MySQL\u6570\u636e"},"content":{"rendered":"<div>\n\u5982\u4f55\u4f7f\u7528python\u8fde\u63a5MySQL\u6570\u636e\u5e93\uff0c\u5e76\u8fdb\u884c\u589e\u5220\u6539\u67e5\u64cd\u4f5c\u5462\uff1f\u5982\u4f55\u5c06\u5927\u6279\u91cf\u6570\u636e\u5bfc\u5165\u6570\u636e\u5e93\u7684\u60c5\u51b5\uff0c\u53c8\u8be5\u5982\u4f55\u4f7f\u7528Python\u8fdb\u884c\u5927\u6570\u636e\u7684\u9ad8\u6548\u5bfc\u5165\u5462\uff1f<\/p>\n<h2>\u4e00\u3001\u73af\u5883\u4ecb\u7ecd<\/h2>\n<p>Python\u7248\u672c\uff1aPython3.6<br \/>\nMySQL\u7248\u672c\uff1a5.6.44<\/p>\n<h2>\u4e8c\u3001\u57fa\u672c\u64cd\u4f5c<\/h2>\n<h3>1\u3001\u5b89\u88c5PyMySQL\u5e93<\/h3>\n<p>\u901a\u8fc7pip\u547d\u4ee4\u5b89\u88c5\uff1a<\/p>\n<pre>pip install pymysql<\/pre>\n<h3>2\u3001SQL\u57fa\u672c\u8bed\u6cd5<\/h3>\n<p>\u4e0b\u9762\u8981\u7528SQL\u7684\u8868\u521b\u5efa\u3001\u67e5\u8be2\u3001\u6570\u636e\u63d2\u5165\u7b49SQL\u8bed\u8a00\u7684\u57fa\u672c\u8bed\u53e5\u3002<\/p>\n<ul>\n<li>\u67e5\u770b\u6570\u636e\u5e93\uff1a<code>SHOW DATABASES\uff1b<\/code><\/li>\n<li>\u521b\u5efa\u6570\u636e\u5e93\uff1a<code>CREATE DATEBASE \u6570\u636e\u5e93\u540d\u79f0\uff1b<\/code><\/li>\n<li>\u4f7f\u7528\u6570\u636e\u5e93\uff1a<code>USE \u6570\u636e\u5e93\u540d\u79f0\uff1b<\/code><\/li>\n<li>\u67e5\u770b\u6570\u636e\u8868\uff1a<code>SHOW TABLES\uff1b<\/code><\/li>\n<li>\u521b\u5efa\u6570\u636e\u8868\uff1a<code>CREATE TABLE \u8868\u540d\u79f0\uff08\u5217\u540d1 \uff08\u6570\u636e\u7c7b\u578b1\uff09\uff0c\u5217\u540d2 \uff08\u6570\u636e\u7c7b\u578b2\uff09\uff09\uff1b<\/code><\/li>\n<li>\u63d2\u5165\u6570\u636e\uff1a<code>INSERT INTO \u8868\u540d\u79f0\uff08\u5217\u540d1\uff0c\u5217\u540d2\uff09 VALUES\uff08\u6570\u636e1\uff0c\u6570\u636e2\uff09\uff1b<\/code><\/li>\n<li>\u67e5\u770b\u6570\u636e\uff1a<code>SELECT * FROM \u8868\u540d\u79f0\uff1b<\/code><\/li>\n<li>\u66f4\u65b0\u6570\u636e\uff1a<code>UPDATE \u8868\u540d\u79f0 SET \u5217\u540d1=\u65b0\u6570\u636e1\uff0c\u5217\u540d2=\u65b0\u6570\u636e2 WHERE \u67d0\u5217=\u67d0\u6570\u636e\uff1b<\/code><\/li>\n<\/ul>\n<h3>3\u3001\u8fde\u63a5\u6570\u636e\u5e93<\/h3>\n<div class=\\\"_2Uzcx_\\\">\n<pre># \u9996\u5148\u5bfc\u5165PyMySQL\u5e93\nimport pymysql\n# \u8fde\u63a5\u6570\u636e\u5e93\uff0c\u521b\u5efa\u8fde\u63a5\u5bf9\u8c61connection\n# \u8fde\u63a5\u5bf9\u8c61\u4f5c\u7528\u662f\uff1a\u8fde\u63a5\u6570\u636e\u5e93\u3001\u53d1\u9001\u6570\u636e\u5e93\u4fe1\u606f\u3001\u5904\u7406\u56de\u6eda\u64cd\u4f5c\uff08\u67e5\u8be2\u4e2d\u65ad\u65f6\uff0c\u6570\u636e\u5e93\u56de\u5230\u6700\u521d\u72b6\u6001\uff09\u3001\u521b\u5efa\u65b0\u7684\u5149\u6807\u5bf9\u8c61\nconnection = pymysql.connect(host = \\'localhost\\' #host\u5c5e\u6027\n                             user = \\'root\\' #\u7528\u6237\u540d\n                             password = \\'******\\'  #\u6b64\u5904\u586b\u767b\u5f55\u6570\u636e\u5e93\u7684\u5bc6\u7801\n                             db = \\'mysql\\' #\u6570\u636e\u5e93\u540d\n                             )\n<\/pre>\n<\/div>\n<h3>4\u3001\u589e\u5220\u6539\u67e5\u64cd\u4f5c<\/h3>\n<p>\u67e5\u770b\u6570\u636e\u5e93\u4e2d\u6709\u54ea\u4e9bscheme\uff1a<\/p>\n<div>\n<pre>#\u521b\u5efa\u5149\u6807\u5bf9\u8c61\uff0c\u4e00\u4e2a\u8fde\u63a5\u53ef\u4ee5\u6709\u5f88\u591a\u5149\u6807\uff0c\u4e00\u4e2a\u5149\u6807\u8ddf\u8e2a\u4e00\u79cd\u6570\u636e\u72b6\u6001\u3002\n#\u5149\u6807\u5bf9\u8c61\u4f5c\u7528\u662f\uff1a\u3001\u521b\u5efa\u3001\u5220\u9664\u3001\u5199\u5165\u3001\u67e5\u8be2\u7b49\u7b49\ncur = connection.cursor()\n#\u67e5\u770b\u6709\u54ea\u4e9b\u6570\u636e\u5e93\uff0c\u901a\u8fc7cur.fetchall()\u83b7\u53d6\u67e5\u8be2\u6240\u6709\u7ed3\u679c\nprint(cur.fetchall())\n<\/pre>\n<\/div>\n<p>\u6253\u5370\u51fa\u6240\u6709\u6570\u636e\u5e93\uff1a<\/p>\n<div>\n<pre>((\\'information_schema\\',),\n(\\'weijing\\',),\n(\\'mysql\\',),\n(\\'performance_schema\\',),\n(\\'test\\',))\n<\/pre>\n<\/div>\n<p>\u5728weijing\u6570\u636e\u5e93\u91cc\u521b\u5efa\u8868:<\/p>\n<div>\n<pre># \u4f7f\u7528\u6570\u636e\u5e93weijing\ncur.execute(\\'use weijing\\')\n# \u5728weijing\u6570\u636e\u5e93\u91cc\u521b\u5efa\u8868student\uff0c\u6709name\u5217\u548cage\u5217\ncur.execute(\\'CREATE TABLE student(name VARCHAR(20),age TINYINT(3))\\')\n<\/pre>\n<\/div>\n<p>\u5411\u6570\u636e\u8868student\u4e2d\u63d2\u5165\u4e00\u6761\u6570\u636e\uff1a<\/p>\n<div>\n<pre>sql = \\'INSERT INTO student (name,age) VALUES (%s,%s)\\'\ncur.execute(sql,(\\'XiaoMing\\',23))\n<\/pre>\n<\/div>\n<p>\u67e5\u770b\u6570\u636e\u8868student\u5185\u5bb9\uff1a<\/p>\n<div>\n<pre>cur.execute(\\'SELECT * FROM student\\')\nprint(cur.fetchone())\n<\/pre>\n<\/div>\n<p>\u6253\u5370\u8f93\u51fa\u4e3a\uff1a(\\&#8217;XiaoMing\\&#8217;, 23)<br \/>\n\u6700\u540e\uff0c\u8981\u8bb0\u5f97\u5173\u95ed\u5149\u6807\u548c\u8fde\u63a5\uff1a<\/p>\n<div class=\\\"_2Uzcx_\\\">\n<pre>#\u5173\u95ed\u8fde\u63a5\u5bf9\u8c61\uff0c\u5426\u5219\u4f1a\u5bfc\u81f4\u8fde\u63a5\u6cc4\u6f0f\uff0c\u6d88\u8017\u6570\u636e\u5e93\u8d44\u6e90\nconnection.close()\n#\u5173\u95ed\u5149\u6807\ncur.close()\n<\/pre>\n<\/div>\n<p>\u6574\u4e2a\u6d41\u7a0b\u5927\u81f4\u5982\u6b64\u3002<\/p>\n<h2>\u4e09\u3001\u5bfc\u5165\u5927\u6570\u636e\u6587\u4ef6<\/h2>\n<p>\u4ee5csv\u6587\u4ef6\u4e3a\u4f8b\uff0ccsv\u6587\u4ef6\u5bfc\u5165\u6570\u636e\u5e93\u4e00\u822c\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a<br \/>\n1\u3001\u901a\u8fc7SQL\u7684insert\u65b9\u6cd5\u4e00\u6761\u4e00\u6761\u5bfc\u5165\uff0c\u9002\u5408\u6570\u636e\u91cf\u5c0f\u7684CSV\u6587\u4ef6\uff0c\u8fd9\u91cc\u4e0d\u505a\u8d58\u8ff0\u3002<br \/>\n\uff12\u3001\u901a\u8fc7load data\u65b9\u6cd5\u5bfc\u5165\uff0c\u901f\u5ea6\u5feb\uff0c\u9002\u5408\u5927\u6570\u636e\u6587\u4ef6\uff0c\u4e5f\u662f\u672c\u6587\u7684\u91cd\u70b9\u3002<\/p>\n<div class=\\\"image-package\\\">\n<div class=\\\"image-container\\\">\n<div class=\\\"image-view\\\" data-width=\\\"289\\\" data-height=\\\"182\\\"><\/div>\n<\/div>\n<\/div>\n<p>\u603b\u4f53\u5de5\u4f5c\u5206\u4e3a3\u6b65\uff1a<br \/>\n1\u3001\u7528python\u8fde\u63a5mysql\u6570\u636e\u5e93\uff1b<br \/>\n2\u3001\u57fa\u4e8eCSV\u6587\u4ef6\u8868\u683c\u5b57\u6bb5\u521b\u5efa\u8868\uff1b<br \/>\n3\u3001\u4f7f\u7528load data\u65b9\u6cd5\u5bfc\u5165CSV\u6587\u4ef6\u5185\u5bb9\u3002<br \/>\nMySQL\u4e2dload data\u8bed\u6cd5\uff1a<\/p>\n<pre>LOAD DATA LOCAL INFILE \\'csv_file_path\\' INTO TABLE table_name FIELDS TERMINATED BY \\',\\' LINES TERMINATED BY \\'\\\\\\\\r\\\\\\\\n\\' IGNORE 1 LINES\ncsv_file_path\n# \u6307\u6587\u4ef6\u7edd\u5bf9\u8def\u5f84\ntable_name\n# \u6307\u8868\u540d\u79f0\nFIELDS TERMINATED BY \\',\\'\n# \u6307\u4ee5\u9017\u53f7\u5206\u9694\nLINES TERMINATED BY \\'\\\\\\\\r\\\\\\\\n\\'\n# \u6307\u6362\u884c\nIGNORE 1 LINES\n# \u6307\u8df3\u8fc7\u7b2c\u4e00\u884c\uff0c\u56e0\u4e3a\u7b2c\u4e00\u884c\u662f\u8868\u7684\u5b57\u6bb5\u540d<\/pre>\n<p>Python\u901a\u8fc7load data \u5bfc\u5165\u6570\u636e\u7684\u5168\u90e8\u4ee3\u7801\uff1a<\/p>\n<div class=\\\"_2Uzcx_\\\">\n<pre class=\\\"line-numbers  language-python\\\">#\u5bfc\u5165pymysql\u65b9\u6cd5\nimport pymysql\n#\u8fde\u63a5\u6570\u636e\u5e93\nconfig = {\\'host\\':\\'\\',\n          \\'port\\':3306,\n          \\'user\\':\\'username\\',\n          \\'passwd\\':\\'password\\',\n          \\'charset\\':\\'utf8mb4\\',\n          \\'local_infile\\':1\n          }\nconn = pymysql.connect(**config)\ncur = conn.cursor()\n# load_csv\u51fd\u6570\uff0c\u53c2\u6570\u5206\u522b\u4e3acsv\u6587\u4ef6\u8def\u5f84\uff0c\u8868\u540d\u79f0\uff0c\u6570\u636e\u5e93\u540d\u79f0\ndef load_csv(csv_file_path,table_name,database=\\'weijingdb\\'):\n    # \u6253\u5f00csv\u6587\u4ef6\n    file = open(csv_file_path, \\'r\\',encoding=\\'utf-8\\')\n    # \u8bfb\u53d6csv\u6587\u4ef6\u7b2c\u4e00\u884c\u5b57\u6bb5\u540d\uff0c\u521b\u5efa\u8868\n    reader = file.readline()\n    b = reader.split(\\',\\')\n    colum = \\'\\'\n    for a in b:\n        colum = colum + a + \\' varchar(255),\\'\n    colum = colum[:-1]\n    # \u7f16\u5199sql\uff0ccreate_sql\u8d1f\u8d23\u521b\u5efa\u8868\uff0cdata_sql\u8d1f\u8d23\u5bfc\u5165\u6570\u636e\n    create_sql = \\'create table if not exists \\' + table_name + \\' \\' + \\'(\\' + colum + \\')\\' + \\' DEFAULT CHARSET=utf8\\'\n    data_sql = \\\"LOAD DATA LOCAL INFILE \\'%s\\' INTO TABLE %s FIELDS TERMINATED BY \\',\\' LINES TERMINATED BY \\'\\\\\\\\r\\\\\\\\n\\' IGNORE 1 LINES\\\" % (csv_filename,table_name)\n    #\u4f7f\u7528\u6570\u636e\u5e93\n    cur.execute(\\'use %s\\' % database)\n    #\u8bbe\u7f6e\u7f16\u7801\u683c\u5f0f\n    cur.execute(\\'SET NAMES utf8;\\')\n    cur.execute(\\'SET character_set_connection=utf8;\\')\n    #\u6267\u884ccreate_sql\uff0c\u521b\u5efa\u8868\n    cur.execute(create_sql)\n    #\u6267\u884cdata_sql\uff0c\u5bfc\u5165\u6570\u636e\n    cur.execute(data_sql)\n    conn.commit()\n    #\u5173\u95ed\u8fde\u63a5\n    conn.close()\n    cur.close()<\/pre>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528python\u8fde\u63a5MySQL\u6570\u636e\u5e93\uff0c\u5e76\u8fdb\u884c\u589e\u5220\u6539\u67e5\u64cd\u4f5c\u5462\uff1f\u5982\u4f55\u5c06\u5927\u6279\u91cf\u6570\u636e\u5bfc\u5165\u6570\u636e\u5e93\u7684\u60c5\u51b5\uff0c\u53c8\u8be5\u5982\u4f55\u4f7f\u7528 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=1490\"> <span class=\"screen-reader-text\">Python\u901a\u8fc7load data\u5bfc\u5165MySQL\u6570\u636e<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[106],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"\u5982\u4f55\u4f7f\u7528python\u8fde\u63a5MySQL\u6570\u636e\u5e93\uff0c\u5e76\u8fdb\u884c\u589e\u5220\u6539\u67e5\u64cd\u4f5c\u5462\uff1f\u5982\u4f55\u5c06\u5927\u6279\u91cf\u6570\u636e\u5bfc\u5165\u6570\u636e\u5e93\u7684\u60c5\u51b5\uff0c\u53c8\u8be5\u5982\u4f55\u4f7f\u7528&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1490"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1490"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1490\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1490"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1490"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1490"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}