PostgreSQL\u5b98\u7db2<\/a>\u4e0b\u8f09\u4e26\u5b89\u88dd\u3002<\/p>\n\u7b2c\u4e09\u6b65\uff1a\u5b89\u88ddPython\u8cc7\u6599\u5eab\u7ba1\u7406\u6a21\u7d44<\/h2>\n
\u70ba\u4e86\u4f7f\u7528Python\u8207\u8cc7\u6599\u5eab\u9032\u884c\u4e92\u52d5\uff0c\u60a8\u9700\u8981\u5b89\u88dd\u76f8\u61c9\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u6a21\u7d44\u3002\u5c0d\u65bcPostgreSQL\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5b89\u88dd`psycopg2`\u6a21\u7d44\uff1a<\/p>\n
“`bash
\npip install psycopg2
\n“`<\/p>\n
\u82e5\u60a8\u7684\u7cfb\u7d71\u4e0a\u5df2\u5b89\u88dd`psycopg2-binary`\uff0c\u5247\u53ef\u76f4\u63a5\u4f7f\u7528\uff1a<\/p>\n
“`bash
\npip install psycopg2-binary
\n“`<\/p>\n
\u7b2c\u56db\u6b65\uff1a\u5efa\u7acb\u8cc7\u6599\u5eab<\/h2>\n
\u63a5\u4e0b\u4f86\uff0c\u60a8\u9700\u8981\u5efa\u7acb\u4e00\u500b\u8cc7\u6599\u5eab\u3002\u4f7f\u7528PostgreSQL\uff0c\u60a8\u53ef\u4ee5\u5728\u547d\u4ee4\u884c\u4e2d\u8f38\u5165\u4ee5\u4e0bSQL\u547d\u4ee4\u4f86\u5efa\u7acb\u540d\u70ba`mydb`\u7684\u8cc7\u6599\u5eab\uff1a<\/p>\n
“`sql
\nCREATE DATABASE mydb;
\n“`<\/p>\n
\u7b2c\u4e94\u6b65\uff1a\u5efa\u7acb\u8cc7\u6599\u8868<\/h2>\n
\u5728\u8cc7\u6599\u5eab\u4e2d\uff0c\u60a8\u9700\u8981\u5efa\u7acb\u4e00\u500b\u8cc7\u6599\u8868\u4ee5\u5b58\u5132\u8cc7\u6599\u3002\u4f7f\u7528\u4ee5\u4e0bSQL\u547d\u4ee4\u4f86\u5efa\u7acb\u4e00\u500b\u540d\u70ba`users`\u7684\u8cc7\u6599\u8868\uff1a<\/p>\n
“`sql
\nCREATE TABLE users (
\n id SERIAL PRIMARY KEY,
\n name VARCHAR(255),
\n email VARCHAR(255)
\n);
\n“`<\/p>\n
\u6b64\u8655\uff0c`id`\u6b04\u4f4d\u4f7f\u7528`SERIAL`\u985e\u578b\uff0c\u4ee5\u81ea\u52d5\u751f\u6210\u552f\u4e00\u7684ID\u3002<\/p>\n
\u7b2c\u516d\u6b65\uff1a\u4f7f\u7528Python\u5b58\u53d6\u8cc7\u6599\u5eab<\/h2>\n
\u6700\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528Python\u4f86\u5b58\u53d6\u8cc7\u6599\u5eab\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u5230\u8cc7\u6599\u5eab\u7684\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff1a<\/p>\n
“`python
\nimport psycopg2<\/p>\n
conn = psycopg2.connect(
\n host=”localhost”,
\n database=”mydb”,
\n user=”postgres”,
\n password=”password”
\n)<\/p>\n
cur = conn.cursor()
\n“`<\/p>\n
\u63a5\u4e0b\u4f86\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7a0b\u5f0f\u78bc\u57f7\u884cSQL\u67e5\u8a62\uff1a<\/p>\n
“`python
\ncur.execute(“SELECT * FROM users”)<\/p>\n
rows = cur.fetchall()<\/p>\n
for row in rows:
\n print(row)
\n“`<\/p>\n
\u60a8\u4e5f\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u7a0b\u5f0f\u78bc\u4f86\u63d2\u5165\u65b0\u8a18\u9304\uff1a<\/p>\n
“`python
\ncur.execute(“INSERT INTO users (name, email) VALUES (%s, %s)”, (“John Doe”, “john@example.com”))<\/p>\n
conn.commit()
\n“`<\/p>\n
\u932f\u8aa4\u6392\u9664<\/h2>\n
\u5728\u57f7\u884c\u4ee5\u4e0a\u6b65\u9a5f\u6642\uff0c\u60a8\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u5e38\u898b\u932f\u8aa4\uff0c\u4f8b\u5982\u9023\u63a5\u5931\u6557\u6216SQL\u8a9e\u6cd5\u932f\u8aa4\u3002\u8acb\u6aa2\u67e5\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n
1. \u78ba\u4fddPostgreSQL\u670d\u52d9\u6b63\u5728\u904b\u884c\u3002
\n2. \u6aa2\u67e5\u7528\u6236\u540d\u548c\u5bc6\u78bc\u662f\u5426\u6b63\u78ba\u3002
\n3. \u5982\u679c\u9047\u5230`psycopg2`\u76f8\u95dc\u7684\u5eab\u932f\u8aa4\uff0c\u78ba\u4fdd\u5df2\u6b63\u78ba\u5b89\u88dd\u8a72\u6a21\u7d44\u3002<\/p>\n
\u5ef6\u4f38\u61c9\u7528<\/h2>\n
\u4f7f\u7528Python\u5efa\u7acb\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e0d\u50c5\u53ef\u4ee5\u8b93\u60a8\u5b78\u7fd2\u8cc7\u6599\u5eab\u64cd\u4f5c\uff0c\u9084\u53ef\u4ee5\u5ef6\u4f38\u81f3\u66f4\u591a\u61c9\u7528\uff0c\u4f8b\u5982\uff1a<\/p>\n
– \u5efa\u7acbWeb\u61c9\u7528\u7a0b\u5f0f\u5f8c\u7aef\uff0c\u4f7f\u7528Flask\u6216Django\u6846\u67b6\u3002
\n– \u4f7f\u7528\u8cc7\u6599\u5206\u6790\u5de5\u5177\u5982Pandas\u9032\u884c\u6578\u64da\u8655\u7406\u3002<\/p>\n
\u5982\u9700\u9032\u4e00\u6b65\u5b78\u7fd2Python\u8207\u8cc7\u6599\u5eab\u7684\u95dc\u806f\uff0c\u8acb\u53c3\u8003\u66f4\u591a\u8cc7\u6e90\uff0c\u4f8b\u5982[\u9019\u7bc7\u6559\u5b78\u6587\u7ae0](https:\/\/vocus.cc\/article\/61c083e3fd89780001b1f62f)\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u672c\u6587\u4ecb\u7d39\u4e86\u5982\u4f55\u4f7f\u7528Python\u5efa\u7acb\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5f9e\u5b89\u88ddPython\u53ca\u8cc7\u6599\u5eab\u5230\u7de8\u5bebPython\u7a0b\u5f0f\u5b58\u53d6\u8cc7\u6599\u5eab\u3002\u900f\u904e\u9019\u4e9b\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u5feb\u901f\u4e0a\u624b\uff0c\u4e26\u63a2\u7d22\u66f4\u591a\u8cc7\u6599\u5eab\u7ba1\u7406\u7684\u53ef\u80fd\u6027\u3002<\/p>\n
Q&A\uff08\u5e38\u898b\u554f\u984c\u89e3\u7b54\uff09<\/h2>\n
**Q1: \u6211\u8981\u5982\u4f55\u9078\u64c7\u9069\u5408\u7684\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff1f**
\nA1: \u6839\u64da\u60a8\u7684\u9700\u6c42\u9078\u64c7\uff0cMySQL\u9069\u5408\u7db2\u9801\u61c9\u7528\uff0cPostgreSQL\u9069\u5408\u9700\u8981\u8907\u96dc\u67e5\u8a62\u7684\u61c9\u7528\uff0cSQLite\u5247\u9069\u5408\u5c0f\u578b\u5c08\u6848\u6216\u5b78\u7fd2\u7528\u9014\u3002<\/p>\n
**Q2: \u662f\u5426\u53ef\u4ee5\u4f7f\u7528Python\u64cd\u4f5c\u5176\u4ed6\u8cc7\u6599\u5eab\uff1f**
\nA2: \u662f\u7684\uff0cPython\u652f\u6301\u591a\u7a2e\u8cc7\u6599\u5eab\u7cfb\u7d71\uff0c\u5305\u62ecMySQL\u3001SQLite\u548cMongoDB\u7b49\uff0c\u53ea\u9700\u5b89\u88dd\u76f8\u61c9\u7684\u8cc7\u6599\u5eab\u6a21\u7d44\u5373\u53ef\u3002<\/p>\n
**Q3: \u5728\u4f7f\u7528`psycopg2`\u6642\u9047\u5230\u7684\u5e38\u898b\u932f\u8aa4\u6709\u54ea\u4e9b\uff1f**
\nA3: \u5e38\u898b\u932f\u8aa4\u5305\u62ec\u9023\u63a5\u5931\u6557\u3001SQL\u8a9e\u6cd5\u932f\u8aa4\u53ca\u8cc7\u6599\u578b\u5225\u4e0d\u5339\u914d\uff0c\u5efa\u8b70\u6aa2\u67e5\u53c3\u6578\u53caSQL\u8a9e\u6cd5\u3002<\/p>\n
—<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Python\u5efa\u7acb\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5f9e\u96f6\u958b\u59cb\uff0c\u6df1\u5165\u63a2\u7d22Python\u7684\u529f\u80fd\uff0c\u77ad\u89e3\u5982\u4f55\u5efa\u7acb\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u3002<\/p>\n","protected":false},"author":1,"featured_media":2518,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[18],"tags":[15],"class_list":["post-2729","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-python","tag-python"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/badgameshow.com\/steven\/wp-content\/uploads\/2022\/12\/DALL\u00b7E-2022-12-28-14.25.55-\u62f7\u8c9d2.png","jetpack-related-posts":[],"jetpack_shortlink":"https:\/\/wp.me\/pcFK27-I1","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2729","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/comments?post=2729"}],"version-history":[{"count":2,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2729\/revisions"}],"predecessor-version":[{"id":13034,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/posts\/2729\/revisions\/13034"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media\/2518"}],"wp:attachment":[{"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/media?parent=2729"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/categories?post=2729"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/badgameshow.com\/steven\/wp-json\/wp\/v2\/tags?post=2729"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}