{"id":1043602,"date":"2024-12-31T13:07:28","date_gmt":"2024-12-31T05:07:28","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1043602.html"},"modified":"2024-12-31T13:07:31","modified_gmt":"2024-12-31T05:07:31","slug":"python%e5%a6%82%e4%bd%95%e5%92%8csql%e6%95%b0%e6%8d%ae%e5%ba%93%e7%bb%93%e5%90%88","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1043602.html","title":{"rendered":"python\u5982\u4f55\u548csql\u6570\u636e\u5e93\u7ed3\u5408"},"content":{"rendered":"<p style=\"text-align:center;\" ><img decoding=\"async\" src=\"https:\/\/cdn-docs.pingcode.com\/wp-content\/uploads\/2024\/12\/b321fd17-c2be-418a-b581-8546b179a811.webp?x-oss-process=image\/auto-orient,1\/format,webp\" alt=\"python\u5982\u4f55\u548csql\u6570\u636e\u5e93\u7ed3\u5408\" \/><\/p>\n<p><p> <strong>Python\u548cSQL\u6570\u636e\u5e93\u7684\u7ed3\u5408\uff1a\u4f7f\u7528\u6570\u636e\u5e93\u8fde\u63a5\u5e93\u3001\u6267\u884cSQL\u67e5\u8be2\u3001\u5904\u7406\u67e5\u8be2\u7ed3\u679c\u3001\u4f7f\u7528ORM\u5de5\u5177\u3002<\/strong> <\/p>\n<\/p>\n<p><p>Python\u662f\u4e00\u79cd\u5f3a\u5927\u4e14\u7075\u6d3b\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u800cSQL\uff08Structured Query Language\uff09\u662f\u7528\u4e8e\u7ba1\u7406\u548c\u64cd\u4f5c\u5173\u7cfb\u6570\u636e\u5e93\u7684\u6807\u51c6\u8bed\u8a00\u3002Python\u548cSQL\u6570\u636e\u5e93\u7ed3\u5408\u4f7f\u7528\uff0c\u53ef\u4ee5\u4f7f\u5f97\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u53d8\u5f97\u66f4\u52a0\u9ad8\u6548\u3002\u8981\u5728Python\u4e2d\u8fde\u63a5\u5e76\u64cd\u4f5cSQL\u6570\u636e\u5e93\uff0c\u901a\u5e38\u9700\u8981\u4f7f\u7528\u6570\u636e\u5e93\u8fde\u63a5\u5e93\uff0c\u6bd4\u5982<code>sqlite3<\/code>\u3001<code>MySQLdb<\/code>\u3001<code>psycopg2<\/code>\u7b49\u3002\u53e6\u5916\uff0c\u4f7f\u7528ORM\uff08Object Relational Mapping\uff09\u5de5\u5177\u5982SQLAlchemy\uff0c\u53ef\u4ee5\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u63d0\u5347\u5f00\u53d1\u6548\u7387\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u4ecb\u7ecd\u3002<\/p>\n<\/p>\n<p><h3>\u4e00\u3001\u4f7f\u7528\u6570\u636e\u5e93\u8fde\u63a5\u5e93<\/h3>\n<\/p>\n<p><p>Python\u63d0\u4f9b\u4e86\u591a\u79cd\u5e93\u6765\u8fde\u63a5\u4e0d\u540c\u7c7b\u578b\u7684SQL\u6570\u636e\u5e93\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5e93\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001SQLite\u6570\u636e\u5e93<\/h4>\n<\/p>\n<p><p>SQLite\u662f\u4e00\u4e2a\u8f7b\u91cf\u7ea7\u7684\u5d4c\u5165\u5f0f\u6570\u636e\u5e93\uff0c\u9002\u7528\u4e8e\u5c0f\u578b\u5e94\u7528\u7a0b\u5e8f\u3002Python\u5185\u7f6e\u4e86\u5bf9SQLite\u7684\u652f\u6301\uff0c\u4f7f\u7528<code>sqlite3<\/code>\u6a21\u5757\u5373\u53ef\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import sqlite3<\/p>\n<h2><strong>\u8fde\u63a5\u5230SQLite\u6570\u636e\u5e93<\/strong><\/h2>\n<p>conn = sqlite3.connect(&#39;example.db&#39;)<\/p>\n<p>cursor = conn.cursor()<\/p>\n<h2><strong>\u521b\u5efa\u8868<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;CREATE TABLE IF NOT EXISTS users (id INTEGER PRIMARY KEY, name TEXT, age INTEGER)&#39;&#39;&#39;)<\/p>\n<h2><strong>\u63d2\u5165\u6570\u636e<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;INSERT INTO users (name, age) VALUES (&#39;Alice&#39;, 30)&#39;&#39;&#39;)<\/p>\n<p>conn.commit()<\/p>\n<h2><strong>\u67e5\u8be2\u6570\u636e<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;SELECT * FROM users&#39;&#39;&#39;)<\/p>\n<p>rows = cursor.fetchall()<\/p>\n<p>for row in rows:<\/p>\n<p>    print(row)<\/p>\n<h2><strong>\u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n<p>conn.close()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001MySQL\u6570\u636e\u5e93<\/h4>\n<\/p>\n<p><p>\u8981\u8fde\u63a5MySQL\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528<code>mysql-connector-python<\/code>\u6216<code>MySQLdb<\/code>\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import mysql.connector<\/p>\n<h2><strong>\u8fde\u63a5\u5230MySQL\u6570\u636e\u5e93<\/strong><\/h2>\n<p>conn = mysql.connector.connect(<\/p>\n<p>    host=&#39;localhost&#39;,<\/p>\n<p>    user=&#39;root&#39;,<\/p>\n<p>    password=&#39;password&#39;,<\/p>\n<p>    database=&#39;test_db&#39;<\/p>\n<p>)<\/p>\n<p>cursor = conn.cursor()<\/p>\n<h2><strong>\u521b\u5efa\u8868<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;CREATE TABLE IF NOT EXISTS users (id INT AUTO_INCREMENT PRIMARY KEY, name VARCHAR(255), age INT)&#39;&#39;&#39;)<\/p>\n<h2><strong>\u63d2\u5165\u6570\u636e<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;INSERT INTO users (name, age) VALUES (&#39;Bob&#39;, 25)&#39;&#39;&#39;)<\/p>\n<p>conn.commit()<\/p>\n<h2><strong>\u67e5\u8be2\u6570\u636e<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;SELECT * FROM users&#39;&#39;&#39;)<\/p>\n<p>rows = cursor.fetchall()<\/p>\n<p>for row in rows:<\/p>\n<p>    print(row)<\/p>\n<h2><strong>\u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n<p>conn.close()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3\u3001PostgreSQL\u6570\u636e\u5e93<\/h4>\n<\/p>\n<p><p>\u5bf9\u4e8ePostgreSQL\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u4f7f\u7528<code>psycopg2<\/code>\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">import psycopg2<\/p>\n<h2><strong>\u8fde\u63a5\u5230PostgreSQL\u6570\u636e\u5e93<\/strong><\/h2>\n<p>conn = psycopg2.connect(<\/p>\n<p>    dbname=&#39;test_db&#39;,<\/p>\n<p>    user=&#39;postgres&#39;,<\/p>\n<p>    password=&#39;password&#39;,<\/p>\n<p>    host=&#39;localhost&#39;<\/p>\n<p>)<\/p>\n<p>cursor = conn.cursor()<\/p>\n<h2><strong>\u521b\u5efa\u8868<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;CREATE TABLE IF NOT EXISTS users (id SERIAL PRIMARY KEY, name VARCHAR(255), age INT)&#39;&#39;&#39;)<\/p>\n<h2><strong>\u63d2\u5165\u6570\u636e<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;INSERT INTO users (name, age) VALUES (&#39;Charlie&#39;, 28)&#39;&#39;&#39;)<\/p>\n<p>conn.commit()<\/p>\n<h2><strong>\u67e5\u8be2\u6570\u636e<\/strong><\/h2>\n<p>cursor.execute(&#39;&#39;&#39;SELECT * FROM users&#39;&#39;&#39;)<\/p>\n<p>rows = cursor.fetchall()<\/p>\n<p>for row in rows:<\/p>\n<p>    print(row)<\/p>\n<h2><strong>\u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n<p>conn.close()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e8c\u3001\u6267\u884cSQL\u67e5\u8be2<\/h3>\n<\/p>\n<p><p>\u5728\u8fde\u63a5\u5230\u6570\u636e\u5e93\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528SQL\u8bed\u53e5\u6765\u6267\u884c\u5404\u79cd\u64cd\u4f5c\uff0c\u5305\u62ec\u521b\u5efa\u8868\u3001\u63d2\u5165\u6570\u636e\u3001\u66f4\u65b0\u6570\u636e\u548c\u67e5\u8be2\u6570\u636e\u3002\u8fd9\u4e9b\u64cd\u4f5c\u7684\u57fa\u672c\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<\/p>\n<ol>\n<li><strong>\u8fde\u63a5\u5230\u6570\u636e\u5e93<\/strong>\uff1a\u4f7f\u7528\u9002\u5f53\u7684\u5e93\u548c\u8fde\u63a5\u53c2\u6570\u8fde\u63a5\u5230\u76ee\u6807\u6570\u636e\u5e93\u3002<\/li>\n<li><strong>\u521b\u5efa\u6e38\u6807<\/strong>\uff1a\u901a\u8fc7\u8fde\u63a5\u5bf9\u8c61\u521b\u5efa\u6e38\u6807\u5bf9\u8c61\uff0c\u7528\u4e8e\u6267\u884cSQL\u8bed\u53e5\u3002<\/li>\n<li><strong>\u6267\u884cSQL\u8bed\u53e5<\/strong>\uff1a\u4f7f\u7528\u6e38\u6807\u5bf9\u8c61\u7684<code>execute()<\/code>\u65b9\u6cd5\u6267\u884cSQL\u8bed\u53e5\u3002<\/li>\n<li><strong>\u63d0\u4ea4\u4e8b\u52a1<\/strong>\uff1a\u5bf9\u4e8e\u63d2\u5165\u3001\u66f4\u65b0\u548c\u5220\u9664\u64cd\u4f5c\uff0c\u9700\u8981\u63d0\u4ea4\u4e8b\u52a1\u4ee5\u4fdd\u5b58\u66f4\u6539\u3002<\/li>\n<li><strong>\u5904\u7406\u67e5\u8be2\u7ed3\u679c<\/strong>\uff1a\u5bf9\u4e8e\u67e5\u8be2\u64cd\u4f5c\uff0c\u4f7f\u7528\u6e38\u6807\u5bf9\u8c61\u7684<code>fetchall()<\/code>\u3001<code>fetchone()<\/code>\u7b49\u65b9\u6cd5\u83b7\u53d6\u7ed3\u679c\u3002<\/li>\n<li><strong>\u5173\u95ed\u8fde\u63a5<\/strong>\uff1a\u5b8c\u6210\u64cd\u4f5c\u540e\uff0c\u5173\u95ed\u6e38\u6807\u548c\u8fde\u63a5\u5bf9\u8c61\u3002<\/li>\n<\/ol>\n<p><h3>\u4e09\u3001\u5904\u7406\u67e5\u8be2\u7ed3\u679c<\/h3>\n<\/p>\n<p><p>\u5904\u7406\u67e5\u8be2\u7ed3\u679c\u662f\u6570\u636e\u5e93\u64cd\u4f5c\u7684\u91cd\u8981\u90e8\u5206\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u548c\u5904\u7406\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001\u83b7\u53d6\u5355\u6761\u8bb0\u5f55<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528<code>fetchone()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u5355\u6761\u8bb0\u5f55\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">cursor.execute(&#39;&#39;&#39;SELECT * FROM users WHERE id = 1&#39;&#39;&#39;)<\/p>\n<p>row = cursor.fetchone()<\/p>\n<p>print(row)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u83b7\u53d6\u591a\u6761\u8bb0\u5f55<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528<code>fetchall()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u83b7\u53d6\u6240\u6709\u8bb0\u5f55\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">cursor.execute(&#39;&#39;&#39;SELECT * FROM users&#39;&#39;&#39;)<\/p>\n<p>rows = cursor.fetchall()<\/p>\n<p>for row in rows:<\/p>\n<p>    print(row)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3\u3001\u4f7f\u7528\u8fed\u4ee3\u5668<\/h4>\n<\/p>\n<p><p>\u6e38\u6807\u5bf9\u8c61\u4e5f\u652f\u6301\u8fed\u4ee3\u5668\u534f\u8bae\uff0c\u53ef\u4ee5\u76f4\u63a5\u5728\u5faa\u73af\u4e2d\u4f7f\u7528\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">cursor.execute(&#39;&#39;&#39;SELECT * FROM users&#39;&#39;&#39;)<\/p>\n<p>for row in cursor:<\/p>\n<p>    print(row)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u56db\u3001\u4f7f\u7528ORM\u5de5\u5177<\/h3>\n<\/p>\n<p><p>ORM\uff08Object Relational Mapping\uff09\u5de5\u5177\u53ef\u4ee5\u5c06\u6570\u636e\u5e93\u8868\u6620\u5c04\u4e3aPython\u7c7b\uff0c\u4f7f\u5f97\u6570\u636e\u5e93\u64cd\u4f5c\u66f4\u52a0\u76f4\u89c2\u548c\u7b80\u6d01\u3002SQLAlchemy\u662f\u4e00\u4e2a\u6d41\u884c\u7684Python ORM\u5de5\u5177\uff0c\u4ee5\u4e0b\u662f\u5176\u4f7f\u7528\u793a\u4f8b\uff1a<\/p>\n<\/p>\n<p><h4>1\u3001\u5b89\u88c5SQLAlchemy<\/h4>\n<\/p>\n<p><p>\u9996\u5148\uff0c\u9700\u8981\u5b89\u88c5SQLAlchemy\u5e93\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-bash\">pip install sqlalchemy<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>2\u3001\u5b9a\u4e49\u6a21\u578b\u7c7b<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528SQLAlchemy\u5b9a\u4e49\u6570\u636e\u5e93\u6a21\u578b\u7c7b\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">from sqlalchemy import create_engine, Column, Integer, String<\/p>\n<p>from sqlalchemy.ext.declarative import declarative_base<\/p>\n<p>from sqlalchemy.orm import sessionmaker<\/p>\n<p>Base = declarative_base()<\/p>\n<p>class User(Base):<\/p>\n<p>    __tablename__ = &#39;users&#39;<\/p>\n<p>    id = Column(Integer, primary_key=True, autoincrement=True)<\/p>\n<p>    name = Column(String)<\/p>\n<p>    age = Column(Integer)<\/p>\n<h2><strong>\u521b\u5efa\u6570\u636e\u5e93\u5f15\u64ce<\/strong><\/h2>\n<p>engine = create_engine(&#39;sqlite:\/\/\/example.db&#39;)<\/p>\n<p>Base.metadata.create_all(engine)<\/p>\n<h2><strong>\u521b\u5efa\u4f1a\u8bdd<\/strong><\/h2>\n<p>Session = sessionmaker(bind=engine)<\/p>\n<p>session = Session()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>3\u3001\u63d2\u5165\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528\u4f1a\u8bdd\u5bf9\u8c61\u63d2\u5165\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">new_user = User(name=&#39;David&#39;, age=35)<\/p>\n<p>session.add(new_user)<\/p>\n<p>session.commit()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>4\u3001\u67e5\u8be2\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528\u4f1a\u8bdd\u5bf9\u8c61\u67e5\u8be2\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\">users = session.query(User).all()<\/p>\n<p>for user in users:<\/p>\n<p>    print(user.id, user.name, user.age)<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h4>5\u3001\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e<\/h4>\n<\/p>\n<p><p>\u4f7f\u7528\u4f1a\u8bdd\u5bf9\u8c61\u66f4\u65b0\u548c\u5220\u9664\u6570\u636e\uff1a<\/p>\n<\/p>\n<p><pre><code class=\"language-python\"># \u66f4\u65b0\u6570\u636e<\/p>\n<p>user = session.query(User).filter_by(name=&#39;David&#39;).first()<\/p>\n<p>user.age = 36<\/p>\n<p>session.commit()<\/p>\n<h2><strong>\u5220\u9664\u6570\u636e<\/strong><\/h2>\n<p>session.delete(user)<\/p>\n<p>session.commit()<\/p>\n<p><\/code><\/pre>\n<\/p>\n<p><h3>\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n<p><p>\u7ed3\u5408\u4f7f\u7528Python\u548cSQL\u6570\u636e\u5e93\uff0c\u53ef\u4ee5\u5145\u5206\u5229\u7528\u4e24\u8005\u7684\u4f18\u52bf\uff0c\u5b9e\u73b0\u9ad8\u6548\u7684\u6570\u636e\u5904\u7406\u548c\u5206\u6790\u3002\u4f7f\u7528\u6570\u636e\u5e93\u8fde\u63a5\u5e93\u53ef\u4ee5\u76f4\u63a5\u6267\u884cSQL\u8bed\u53e5\uff0c\u8fdb\u884c\u5404\u79cd\u6570\u636e\u5e93\u64cd\u4f5c\uff1b\u800c\u4f7f\u7528ORM\u5de5\u5177\u5219\u53ef\u4ee5\u7b80\u5316\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u548c\u53ef\u7ef4\u62a4\u3002\u65e0\u8bba\u91c7\u7528\u54ea\u79cd\u65b9\u5f0f\uff0c\u90fd\u53ef\u4ee5\u5b9e\u73b0\u5f3a\u5927\u7684\u6570\u636e\u7ba1\u7406\u548c\u64cd\u4f5c\u529f\u80fd\u3002<\/p>\n<\/p>\n<h2><strong>\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n<p> <strong>\u5982\u4f55\u5728Python\u4e2d\u8fde\u63a5SQL\u6570\u636e\u5e93\uff1f<\/strong><br \/>\u5728Python\u4e2d\u8fde\u63a5SQL\u6570\u636e\u5e93\u901a\u5e38\u4f7f\u7528\u5e93\u5982<code>sqlite3<\/code>\u3001<code>MySQL Connector<\/code>\u6216<code>SQLAlchemy<\/code>\u3002\u9996\u5148\uff0c\u786e\u4fdd\u5b89\u88c5\u76f8\u5e94\u7684\u5e93\u3002\u4f8b\u5982\uff0c\u4f7f\u7528<code>pip install mysql-connector-python<\/code>\u6765\u5b89\u88c5MySQL Connector\u3002\u8fde\u63a5\u65f6\u9700\u8981\u63d0\u4f9b\u6570\u636e\u5e93\u7684\u5730\u5740\u3001\u7528\u6237\u540d\u548c\u5bc6\u7801\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u57fa\u672c\u7684\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">import mysql.connector\n\nconnection = mysql.connector.connect(\n    host=&#39;localhost&#39;,\n    user=&#39;your_username&#39;,\n    password=&#39;your_password&#39;,\n    database=&#39;your_database&#39;\n)\n\ncursor = connection.cursor()\n# \u6267\u884c\u67e5\u8be2\u6216\u5176\u4ed6\u64cd\u4f5c\ncursor.close()\nconnection.close()\n<\/code><\/pre>\n<p><strong>Python\u4e0eSQL\u6570\u636e\u5e93\u7684\u4ea4\u4e92\u6709\u54ea\u4e9b\u5e38\u7528\u65b9\u6cd5\uff1f<\/strong><br \/>\u901a\u8fc7Python\u4e0eSQL\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92\u65f6\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\u6267\u884cSQL\u67e5\u8be2\u3001\u63d2\u5165\u6570\u636e\u3001\u66f4\u65b0\u8bb0\u5f55\u548c\u5220\u9664\u6570\u636e\u3002\u4f7f\u7528\u6e38\u6807\uff08cursor\uff09\u5bf9\u8c61\u53ef\u4ee5\u6267\u884c\u8fd9\u4e9b\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u4f7f\u7528<code>cursor.execute()<\/code>\u65b9\u6cd5\u6765\u6267\u884cSQL\u8bed\u53e5\uff0c\u4f7f\u7528<code>fetchall()<\/code>\u6216<code>fetchone()<\/code>\u6765\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c\u3002\u786e\u4fdd\u5728\u64cd\u4f5c\u5b8c\u6210\u540e\u5173\u95ed\u6e38\u6807\u548c\u8fde\u63a5\uff0c\u4ee5\u91ca\u653e\u8d44\u6e90\u3002<\/p>\n<p><strong>\u5982\u4f55\u5904\u7406Python\u4e0eSQL\u6570\u636e\u5e93\u4e4b\u95f4\u7684\u6570\u636e\u8f6c\u6362\uff1f<\/strong><br \/>\u5728Python\u4e0eSQL\u6570\u636e\u5e93\u4e4b\u95f4\u4f20\u8f93\u6570\u636e\u65f6\uff0c\u901a\u5e38\u9700\u8981\u5c06Python\u7684\u6570\u636e\u7ed3\u6784\uff08\u5982\u5217\u8868\u3001\u5b57\u5178\uff09\u8f6c\u6362\u4e3aSQL\u53ef\u4ee5\u63a5\u53d7\u7684\u683c\u5f0f\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528<code>pandas<\/code>\u5e93\u6765\u7b80\u5316\u3002\u4f8b\u5982\uff0c\u5c06DataFrame\u5bfc\u5165\u6570\u636e\u5e93\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528<code>to_sql<\/code>\u65b9\u6cd5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a  <\/p>\n<pre><code class=\"language-python\">import pandas as pd\nfrom sqlalchemy import create_engine\n\nengine = create_engine(&#39;mysql:\/\/user:password@localhost\/dbname&#39;)\ndf.to_sql(&#39;table_name&#39;, con=engine, if_exists=&#39;replace&#39;, index=False)\n<\/code><\/pre>\n<p>\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u6709\u6548\u5730\u5c06\u590d\u6742\u6570\u636e\u7ed3\u6784\u76f4\u63a5\u5199\u5165\u6570\u636e\u5e93\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python\u548cSQL\u6570\u636e\u5e93\u7684\u7ed3\u5408\uff1a\u4f7f\u7528\u6570\u636e\u5e93\u8fde\u63a5\u5e93\u3001\u6267\u884cSQL\u67e5\u8be2\u3001\u5904\u7406\u67e5\u8be2\u7ed3\u679c\u3001\u4f7f\u7528ORM\u5de5\u5177\u3002 Pytho [&hellip;]","protected":false},"author":3,"featured_media":1043611,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1043602"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1043602"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1043602\/revisions"}],"predecessor-version":[{"id":1043612,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1043602\/revisions\/1043612"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1043611"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1043602"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1043602"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1043602"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}