{"id":179079,"date":"2024-05-08T20:05:19","date_gmt":"2024-05-08T12:05:19","guid":{"rendered":""},"modified":"2024-05-08T20:05:25","modified_gmt":"2024-05-08T12:05:25","slug":"python%e8%b0%83%e7%94%a8mysql%e8%af%ad%e5%8f%a5%e5%90%8e%e9%9d%a2-1000%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/179079.html","title":{"rendered":"python\u8c03\u7528mysql\u8bed\u53e5\u540e\u9762 % (1000)\u662f\u4ec0\u4e48\u610f\u601d"},"content":{"rendered":"

\"python\u8c03\u7528mysql\u8bed\u53e5\u540e\u9762<\/p>\n

\u5728Python\u4e2d\u8c03\u7528MySQL\u8bed\u53e5\u65f6\uff0c\u540e\u9762\u7684 % (1000)<\/code> \u662f\u4e00\u79cd\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u7684\u624b\u6bb5\uff0c\u7528\u4e8e\u5c06\u6307\u5b9a\u7684\u503c\u63d2\u5165SQL\u8bed\u53e5\u4e2d\u3002\u6838\u5fc3\u89c2\u70b9\u5305\u62ec\uff1a\u53c2\u6570\u5316\u67e5\u8be2\u3001\u9632\u6b62SQL\u6ce8\u5165\u653b\u51fb\u3001\u63d0\u9ad8\u4ee3\u7801\u53ef\u7ef4\u62a4\u6027<\/strong>\u3002\u5728\u8fd9\u4e09\u4e2a\u70b9\u4e2d\uff0c\u5c24\u5176\u503c\u5f97\u5f3a\u8c03\u7684\u662f\u9632\u6b62SQL\u6ce8\u5165\u653b\u51fb<\/strong>\u3002\u901a\u8fc7\u4f7f\u7528\u53c2\u6570\u5316\u67e5\u8be2\uff0c\u53ef\u4ee5\u786e\u4fdd\u4f20\u5165SQL\u8bed\u53e5\u7684\u6570\u636e\u4e0d\u4f1a\u88ab\u89e3\u91ca\u4e3aSQL\u4ee3\u7801\u7684\u4e00\u90e8\u5206\uff0c\u4ece\u800c\u907f\u514d\u4e86\u6076\u610f\u7528\u6237\u5229\u7528SQL\u6ce8\u5165\u6f0f\u6d1e\u6267\u884c\u672a\u6388\u6743\u7684\u6570\u636e\u5e93\u547d\u4ee4\u3002\u8fd9\u79cd\u65b9\u5f0f\u4e0d\u4ec5\u589e\u5f3a\u4e86\u5e94\u7528\u7a0b\u5e8f\u7684\u5b89\u5168\u6027\uff0c\u8fd8\u6709\u52a9\u4e8e\u907f\u514d\u56e0\u76f4\u63a5\u62fc\u63a5\u5b57\u7b26\u4e32\u800c\u5f15\u8d77\u7684\u8bed\u6cd5\u9519\u8bef\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u53c2\u6570\u5316\u67e5\u8be2\u7684\u57fa\u7840<\/h3>\n<\/p>\n

\u5728Python\u5bf9MySQL\u6570\u636e\u5e93\u8fdb\u884c\u64cd\u4f5c\u65f6\uff0c\u7ecf\u5e38\u9700\u8981\u5c06\u53d8\u91cf\u7684\u503c\u63d2\u5165\u5230SQL\u8bed\u53e5\u4e2d\u3002\u6700\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\uff0c%<\/code>\u64cd\u4f5c\u7b26\u5c31\u662f\u5176\u4e2d\u4e00\u79cd\u65b9\u5f0f\u3002\u8fd9\u79cd\u65b9\u6cd5\u901a\u8fc7\u5728SQL\u8bed\u53e5\u4e2d\u4f7f\u7528\u5360\u4f4d\u7b26%s<\/code>\uff0c\u7136\u540e\u4f7f\u7528%<\/code>\u64cd\u4f5c\u7b26\u540e\u8ddf\u4e00\u4e2a\u5143\u7ec4\u6216\u5355\u4e2a\u503c\uff0c\u6765\u5b9e\u73b0\u53d8\u91cf\u7684\u63d2\u5165\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\u4ee3\u7801\u6f14\u793a\u4e86\u5982\u4f55\u4f7f\u7528% (1000)<\/code>\u5c06\u6570\u5b571000\u63d2\u5165\u5230SQL\u67e5\u8be2\u4e2d\uff1a<\/p>\n<\/p>\n

cursor.execute("SELECT * FROM orders WHERE amount > %s", (1000,))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u91cc\uff0c%s<\/code>\u4e0d\u662fPython\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u64cd\u4f5c\u7b26\uff0c\u800c\u662f\u5728SQL\u8bed\u53e5\u7684\u4e0a\u4e0b\u6587\u4e2d\u7528\u4f5c\u5360\u4f4d\u7b26\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u9632\u6b62SQL\u6ce8\u5165\u653b\u51fb<\/h3>\n<\/p>\n
\u4f7f\u7528\u53c2\u6570\u5316\u67e5\u8be2\u7684\u4e3b\u8981\u4f18\u52bf\u4e4b\u4e00\u662f\u5b83\u6709\u52a9\u4e8e\u9632\u6b62SQL\u6ce8\u5165\u653b\u51fb\u3002SQL\u6ce8\u5165\u662f\u4e00\u79cd\u5e38\u89c1\u7684\u7f51\u7ad9\u5b89\u5168\u6f0f\u6d1e\uff0c\u5141\u8bb8\u653b\u51fb\u8005\u5411SQL\u67e5\u8be2\u63d2\u5165\u6076\u610fSQL\u4ee3\u7801\uff0c\u4ece\u800c\u83b7\u53d6\u672a\u6388\u6743\u7684\u6570\u636e\u5e93\u8bbf\u95ee\u6743\u9650\u3002\u901a\u8fc7\u4f7f\u7528%s\u4f5c\u4e3a\u5360\u4f4d\u7b26\uff0c\u5e76\u901a\u8fc7%<\/code>\u64cd\u4f5c\u7b26\u4f20\u9012\u53c2\u6570\uff0c\u53ef\u4ee5\u786e\u4fdd\u4f20\u5165\u7684\u503c\u88ab\u9002\u5f53\u5730\u5904\u7406\u548c\u8f6c\u4e49\uff0c\u4ece\u800c\u9632\u6b62\u4e86\u653b\u51fb\u8005\u901a\u8fc7\u6784\u9020\u7279\u6b8a\u7684\u8f93\u5165\u6765\u7be1\u6539\u539f\u59cbSQL\u547d\u4ee4\u7684\u610f\u56fe\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u63d0\u9ad8\u4ee3\u7801\u53ef\u7ef4\u62a4\u6027<\/h3>\n<\/p>\n
\u9664\u4e86\u5b89\u5168\u6027\u5916\uff0c\u4f7f\u7528\u8fd9\u79cd\u683c\u5f0f\u5316\u65b9\u5f0f\u8fd8\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u8bfb\u6027\u3002\u5f53SQL\u67e5\u8be2\u53d8\u5f97\u590d\u6742\u65f6\uff0c\u4f7f\u7528\u53c2\u6570\u5316\u67e5\u8be2\u53ef\u4ee5\u4f7f\u5f97SQL\u8bed\u53e5\u7684\u7ed3\u6784\u4fdd\u6301\u6e05\u6670\u548c\u4e0d\u53d8\uff0c\u53ea\u901a\u8fc7\u66f4\u6539\u53c2\u6570\u7684\u503c\u5c31\u53ef\u4ee5\u590d\u7528\u76f8\u540c\u7684SQL\u6a21\u677f\u3002\u8fd9\u79cd\u505a\u6cd5\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u6574\u6d01\u3001\u6613\u4e8e\u7406\u89e3\u548c\u7ef4\u62a4\u3002<\/p>\n<\/p>\n
\u56db\u3001\u6027\u80fd\u8003\u8651<\/h3>\n<\/p>\n
\u53e6\u5916\uff0c\u4f7f\u7528\u53c2\u6570\u5316\u67e5\u8be2\u8fd8\u53ef\u80fd\u5bf9\u6570\u636e\u5e93\u7684\u6027\u80fd\u4ea7\u751f\u79ef\u6781\u5f71\u54cd\u3002\u6570\u636e\u5e93\u7cfb\u7edf\u53ef\u4ee5\u5bf9\u53c2\u6570\u5316\u7684SQL\u8bed\u53e5\u8fdb\u884c\u4f18\u5316\uff0c\u901a\u8fc7\u9884\u7f16\u8bd1SQL\u8bed\u53e5\u5e76\u7f13\u5b58\u6267\u884c\u8ba1\u5212\uff0c\u63d0\u9ad8\u67e5\u8be2\u7684\u6267\u884c\u6548\u7387\u3002\u8fd9\u610f\u5473\u7740\u5bf9\u4e8e\u9891\u7e41\u6267\u884c\u7684\u67e5\u8be2\uff0c\u4f7f\u7528\u53c2\u6570\u5316\u67e5\u8be2\u4e0d\u4ec5\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u5b89\u5168\u6027\uff0c\u8fd8\u53ef\u4ee5\u63d0\u5347\u6570\u636e\u5e93\u7684\u6027\u80fd\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5b9e\u8df5\u4e3e\u4f8b<\/h3>\n<\/p>\n
\u4e3a\u4e86\u66f4\u6df1\u5165\u5730\u7406\u89e3% (1000)<\/code>\u5728Python\u8c03\u7528MySQL\u8bed\u53e5\u4e2d\u7684\u5e94\u7528\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u5c55\u5f00\u8bf4\u660e\u3002\u5047\u8bbe\u6211\u4eec\u9700\u8981\u4ece\u6570\u636e\u5e93\u7684orders<\/code>\u8868\u4e2d\u67e5\u8be2\u6240\u6709\u91d1\u989d\u8d85\u8fc71000\u7684\u8ba2\u5355\u3002\u4f7f\u7528\u53c2\u6570\u5316\u67e5\u8be2\u7684\u65b9\u5f0f\uff0c\u6211\u4eec\u7684Python\u4ee3\u7801\u53ef\u80fd\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<\/p>\n
import mysql.connector<\/p>\n
\u8fde\u63a5\u5230\u6570\u636e\u5e93<\/strong><\/h2>\n
conn = mysql.connector.connect(user='username', password='password', host='localhost', database='mydatabase')<\/p>\n
cursor = conn.cursor()<\/p>\n
\u6267\u884c\u53c2\u6570\u5316\u67e5\u8be2<\/strong><\/h2>\n
query = "SELECT * FROM orders WHERE amount > %s"<\/p>\n
value = (1000,)<\/p>\n
cursor.execute(query, value)<\/p>\n
\u83b7\u53d6\u67e5\u8be2\u7ed3\u679c<\/strong><\/h2>\n
results = cursor.fetchall()<\/p>\n
for row in results:<\/p>\n
    print(row)<\/p>\n
\u5173\u95ed\u8fde\u63a5<\/strong><\/h2>\n
cursor.close()<\/p>\n
conn.close()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u901a\u8fc7\u4e0a\u8ff0\u5b9e\u8df5\uff0c\u6211\u4eec\u53ef\u4ee5\u6e05\u6670\u5730\u770b\u5230\u4f7f\u7528% (1000)<\/code>\u8fdb\u884c\u53c2\u6570\u5316\u67e5\u8be2\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u4ee3\u7801\u7684\u5b89\u5168\u6027\u548c\u53ef\u7ef4\u62a4\u6027\uff0c\u8fd8\u53ef\u80fd\u5bf9\u6027\u80fd\u4ea7\u751f\u79ef\u6781\u5f71\u54cd\u3002<\/p>\n<\/p>\n
\u603b\u7684\u6765\u8bf4\uff0c\u5728Python\u4e2d\u4f7f\u7528% (1000)<\/code>\u6267\u884cMySQL\u547d\u4ee4\uff0c\u662f\u4e00\u79cd\u9ad8\u6548\u3001\u5b89\u5168\u4e14\u6613\u4e8e\u7ef4\u62a4\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u65b9\u6cd5\u3002\u65e0\u8bba\u662f\u5bf9\u4e8e\u9632\u6b62SQL\u6ce8\u5165\u653b\u51fb\uff0c\u8fd8\u662f\u63d0\u9ad8\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\uff0c\u90fd\u662f\u4e00\u79cd\u975e\u5e38\u63a8\u8350\u7684\u5b9e\u8df5\u65b9\u5f0f\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u4e3a\u4ec0\u4e48\u5728Python\u8c03\u7528MySQL\u8bed\u53e5\u540e\u9762\u9700\u8981\u4f7f\u7528 % (1000)\uff1f<\/strong><\/p>\n
\u5728Python\u4e2d\uff0c\u4f7f\u7528MySQL\u8bed\u53e5\u8fdb\u884c\u67e5\u8be2\u6216\u66f4\u65b0\u64cd\u4f5c\u65f6\uff0c\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5728\u8bed\u53e5\u4e2d\u4f7f\u7528\u5360\u4f4d\u7b26\u6765\u4f20\u9012\u53c2\u6570\u503c\u3002\u800c % (1000) \u8868\u793a\u4f7f\u7528\u5360\u4f4d\u7b26\u5bf9\u5e94\u7684\u53c2\u6570\u503c\u4e3a 1000\u3002\u8fd9\u6837\u53ef\u4ee5\u5c06\u53c2\u6570\u503c\u52a8\u6001\u5730\u4f20\u9012\u7ed9MySQL\u8bed\u53e5\uff0c\u5b9e\u73b0\u66f4\u7075\u6d3b\u7684\u64cd\u4f5c\u3002<\/p>\n
2. \u5728Python\u4e2d\uff0c\u4e3a\u4ec0\u4e48\u6211\u4eec\u8981\u4f7f\u7528 % (1000) \u800c\u4e0d\u662f\u76f4\u63a5\u5728SQL\u8bed\u53e5\u4e2d\u5199\u53c2\u6570\u503c1000\uff1f<\/strong><\/p>\n
\u4f7f\u7528\u5360\u4f4d\u7b26 % (1000) \u7684\u597d\u5904\u662f\u53ef\u4ee5\u9632\u6b62SQL\u6ce8\u5165\u653b\u51fb\u3002\u5982\u679c\u76f4\u63a5\u628a\u53c2\u6570\u503c\u5199\u5728SQL\u8bed\u53e5\u4e2d\uff0c\u90a3\u4e48\u6076\u610f\u7528\u6237\u53ef\u80fd\u901a\u8fc7\u6784\u9020\u7279\u6b8a\u7684\u53c2\u6570\u503c\u6765\u6267\u884c\u6076\u610f\u64cd\u4f5c\uff0c\u6bd4\u5982\u5220\u9664\u6216\u4fee\u6539\u6570\u636e\u5e93\u4e2d\u7684\u6570\u636e\u3002\u800c\u4f7f\u7528\u5360\u4f4d\u7b26\uff0cMySQL\u4f1a\u81ea\u52a8\u5c06\u53c2\u6570\u503c\u8f6c\u4e49\uff0c\u4ece\u800c\u907f\u514d\u4e86\u6f5c\u5728\u7684\u5b89\u5168\u98ce\u9669\u3002<\/p>\n
3. % (1000) \u7684\u53e6\u4e00\u4e2a\u4f5c\u7528\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n
\u9664\u4e86\u4f20\u9012\u53c2\u6570\u503c\u5916\uff0c% (1000) \u8fd8\u53ef\u4ee5\u5b9e\u73b0\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u7684\u529f\u80fd\u3002\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5360\u4f4d\u7b26 % \u6765\u6307\u5b9a\u5b57\u7b26\u4e32\u4e2d\u7684\u683c\u5f0f\u5316\u4f4d\u7f6e\uff0c\u5e76\u5c06\u5bf9\u5e94\u7684\u503c\u586b\u5165\u5176\u4e2d\u3002\u4f8b\u5982\uff0c%s\u8868\u793a\u5b57\u7b26\u4e32\u5360\u4f4d\u7b26\uff0c%d\u8868\u793a\u6574\u6570\u5360\u4f4d\u7b26\uff0c%f\u8868\u793a\u6d6e\u70b9\u6570\u5360\u4f4d\u7b26\u3002\u901a\u8fc7\u5c06\u53c2\u6570\u503c\u4f20\u9012\u7ed9\u5360\u4f4d\u7b26\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u53d8\u91cf\u52a8\u6001\u5730\u63d2\u5165\u5230\u5b57\u7b26\u4e32\u4e2d\uff0c\u5b9e\u73b0\u66f4\u7075\u6d3b\u7684\u8f93\u51fa\u6548\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u8c03\u7528MySQL\u8bed\u53e5\u65f6\uff0c\u540e\u9762\u7684 % (1000) \u662f\u4e00\u79cd\u5b57\u7b26\u4e32\u683c\u5f0f\u5316\u7684\u624b\u6bb5\uff0c\u7528\u4e8e\u5c06\u6307\u5b9a\u7684\u503c\u63d2\u5165S […]","protected":false},"author":3,"featured_media":179088,"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\/179079"}],"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=179079"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/179079\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/179088"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=179079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=179079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=179079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}