{"id":166597,"date":"2024-11-05T17:35:21","date_gmt":"2024-11-05T09:35:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/166597\/"},"modified":"2024-11-05T17:35:22","modified_gmt":"2024-11-05T09:35:22","slug":"%e5%bf%ab%e9%80%9f%e5%ad%b8%e6%9c%83%e5%a6%82%e4%bd%95%e9%80%9a%e9%81%8e%e4%bb%a3%e7%a2%bc%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-%e4%bb%a3%e7%a2%bc%e6%9f%a5%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/166597\/","title":{"rendered":"\u5feb\u901f\u5b78\u6703\u5982\u4f55\u901a\u904e\u4ee3\u78bc\u67e5\u8a62\u6578\u64da\u5eab\u8868 (\u4ee3\u78bc\u67e5\u6578\u64da\u5eab\u8868)"},"content":{"rendered":"

\u5feb\u901f\u5b78\u6703\u5982\u4f55\u901a\u904e\u4ee3\u78bc\u67e5\u8a62\u6578\u64da\u5eab\u8868 (\u4ee3\u78bc\u67e5\u6578\u64da\u5eab\u8868)<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0c\u80fd\u5920\u6709\u6548\u5730\u67e5\u8a62\u6578\u64da\u5eab\u8868\u662f\u6bcf\u4f4d\u958b\u767c\u8005\u548c\u6578\u64da\u5206\u6790\u5e2b\u5fc5\u5099\u7684\u6280\u80fd\u4e4b\u4e00\u3002\u7121\u8ad6\u662f\u4f7f\u7528 SQL\u3001Python \u9084\u662f\u5176\u4ed6\u7de8\u7a0b\u8a9e\u8a00\uff0c\u638c\u63e1\u5982\u4f55\u901a\u904e\u4ee3\u78bc\u67e5\u8a62\u6578\u64da\u5eab\u8868\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u5de5\u4f5c\u6548\u7387\u548c\u6578\u64da\u8655\u7406\u80fd\u529b\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5e7e\u7a2e\u5e38\u898b\u7684\u67e5\u8a62\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u4ee3\u78bc\u793a\u4f8b\u3002<\/p>\n

1. \u4f7f\u7528 SQL \u67e5\u8a62\u6578\u64da\u5eab\u8868<\/h2>\n

SQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u6700\u5e38\u7528\u7684\u6578\u64da\u5eab\u67e5\u8a62\u8a9e\u8a00\u4e4b\u4e00\u3002\u901a\u904e SQL\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6240\u9700\u7684\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684 SQL \u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n

1.1 \u57fa\u672c\u67e5\u8a62<\/h3>\n
SELECT * FROM \u8868\u540d;<\/code><\/pre>\n
\u9019\u689d\u8a9e\u53e5\u5c07\u8fd4\u56de\u6307\u5b9a\u8868\u4e2d\u7684\u6240\u6709\u884c\u548c\u5217\u3002<\/p>\n
1.2 \u689d\u4ef6\u67e5\u8a62<\/h3>\n
SELECT * FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u67e5\u8a62\u5e74\u9f61\u5927\u65bc 18 \u6b72\u7684\u7528\u6236\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n
SELECT * FROM users WHERE age > 18;<\/code><\/pre>\n
1.3 \u6392\u5e8f\u67e5\u8a62<\/h3>\n
SELECT * FROM \u8868\u540d ORDER BY \u5217\u540d ASC|DESC;<\/code><\/pre>\n
\u9019\u689d\u8a9e\u53e5\u5c07\u6839\u64da\u6307\u5b9a\u7684\u5217\u9032\u884c\u6392\u5e8f\uff0cASC \u8868\u793a\u5347\u5e8f\uff0cDESC \u8868\u793a\u964d\u5e8f\u3002<\/p>\n
2. \u4f7f\u7528 Python \u67e5\u8a62\u6578\u64da\u5eab<\/h2>\n
Python \u662f\u4e00\u7a2e\u6d41\u884c\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u6578\u64da\u5206\u6790\u548c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u4f7f\u7528 Python \u7684\u8a71\uff0c\u60a8\u53ef\u4ee5\u901a\u904e\u5eab\u5982 SQLite3 \u6216 SQLAlchemy \u4f86\u67e5\u8a62\u6578\u64da\u5eab\u3002<\/p>\n
2.1 \u4f7f\u7528 SQLite3<\/h3>\n
import sqlite3\n\n# \u9023\u63a5\u5230\u6578\u64da\u5eab\nconn = sqlite3.connect('example.db')\ncursor = conn.cursor()\n\n# \u57f7\u884c\u67e5\u8a62\ncursor.execute(\"SELECT * FROM \u8868\u540d\")\nrows = cursor.fetchall()\n\n# \u8f38\u51fa\u7d50\u679c\nfor row in rows:\n    print(row)\n\n# \u95dc\u9589\u9023\u63a5\nconn.close()<\/code><\/pre>\n
2.2 \u4f7f\u7528 SQLAlchemy<\/h3>\n
from sqlalchemy import create_engine\nfrom sqlalchemy.orm import sessionmaker\n\n# \u5275\u5efa\u6578\u64da\u5eab\u5f15\u64ce\nengine = create_engine('sqlite:\/\/\/example.db')\nSession = sessionmaker(bind=engine)\nsession = Session()\n\n# \u67e5\u8a62\u6578\u64da\nresults = session.execute(\"SELECT * FROM \u8868\u540d\").fetchall()\n\n# \u8f38\u51fa\u7d50\u679c\nfor result in results:\n    print(result)\n\n# \u95dc\u9589\u6703\u8a71\nsession.close()<\/code><\/pre>\n
3. \u4f7f\u7528 PHP \u67e5\u8a62\u6578\u64da\u5eab<\/h2>\n
PHP \u662f\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u670d\u52d9\u5668\u7aef\u8173\u672c\u8a9e\u8a00\uff0c\u7279\u5225\u9069\u5408\u65bc\u7db2\u9801\u958b\u767c\u3002\u4f7f\u7528 PHP \u9023\u63a5\u548c\u67e5\u8a62 MySQL \u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\u5982\u4e0b\uff1a<\/p>\n
<?php\n\/\/ \u9023\u63a5\u5230\u6578\u64da\u5eab\n$conn = new mysqli('localhost', '\u7528\u6236\u540d', '\u5bc6\u78bc', '\u6578\u64da\u5eab\u540d');\n\n\/\/ \u6aa2\u67e5\u9023\u63a5\nif ($conn->connect_error) {\n    die(\"\u9023\u63a5\u5931\u6557: \" . $conn->connect_error);\n}\n\n\/\/ \u57f7\u884c\u67e5\u8a62\n$sql = \"SELECT * FROM \u8868\u540d\";\n$result = $conn->query($sql);\n\n\/\/ \u8f38\u51fa\u7d50\u679c\nif ($result->num_rows > 0) {\n    while($row = $result->fetch_assoc()) {\n        echo \"id: \" . $row[\"id\"]. \" - \u540d\u7a31: \" . $row[\"name\"]. \"<br>\";\n    }\n} else {\n    echo \"0 \u7d50\u679c\";\n}\n\n\/\/ \u95dc\u9589\u9023\u63a5\n$conn->close();\n?><\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u901a\u904e\u672c\u6587\u7684\u4ecb\u7d39\uff0c\u60a8\u61c9\u8a72\u5c0d\u5982\u4f55\u901a\u904e\u4ee3\u78bc\u67e5\u8a62\u6578\u64da\u5eab\u8868\u6709\u4e86\u57fa\u672c\u7684\u4e86\u89e3\u3002\u7121\u8ad6\u662f\u4f7f\u7528 SQL\u3001Python \u9084\u662f PHP\uff0c\u638c\u63e1\u9019\u4e9b\u6280\u80fd\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u9ad8\u6548\u5730\u8655\u7406\u6578\u64da\u3002\u96a8\u8457\u6280\u8853\u7684\u767c\u5c55\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8d8a\u4f86\u8d8a\u666e\u904d\uff0c\u5b78\u6703\u9019\u4e9b\u67e5\u8a62\u6280\u5de7\u5c07\u4f7f\u60a8\u5728\u8077\u696d\u751f\u6daf\u4e2d\u53d7\u76ca\u532a\u6dfa\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u6216\u4e91\u670d\u52a1\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u6578\u64da\u5eab\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5feb\u901f\u5b78\u6703\u5982\u4f55\u901a\u904e\u4ee3\u78bc\u67e5\u8a62\u6578\u64da\u5eab\u8868\uff0c\u638c\u63e1\u57fa\u672c\u8a9e\u6cd5\u8207\u6280\u5de7\uff0c\u8f15\u9b06\u7372\u53d6\u6240\u9700\u6578\u64da\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-166597","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166597","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=166597"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166597\/revisions"}],"predecessor-version":[{"id":166598,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/166597\/revisions\/166598"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=166597"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=166597"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=166597"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}