{"id":75558,"date":"2024-10-15T23:48:19","date_gmt":"2024-10-15T15:48:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75558\/"},"modified":"2024-10-15T23:48:19","modified_gmt":"2024-10-15T15:48:19","slug":"mysql-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%8d%81%e5%ae%97%e7%bd%aa%ef%bc%88%e9%99%84%e5%8d%81%e5%a4%a7%e7%b6%93%e5%85%b8%e9%8c%af%e8%aa%a4%e6%a1%88%e4%be%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75558\/","title":{"rendered":"MySQL \u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff08\u9644\u5341\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff09"},"content":{"rendered":"

MySQL \u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff08\u9644\u5341\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff09<\/h1>\n

MySQL \u662f\u4e00\u500b\u5ee3\u6cdb\u4f7f\u7528\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u56e0\u5176\u9ad8\u6548\u80fd\u548c\u9748\u6d3b\u6027\u800c\u53d7\u5230\u958b\u767c\u8005\u7684\u9752\u775e\u3002\u7136\u800c\uff0c\u5728\u4f7f\u7528 MySQL \u7684\u904e\u7a0b\u4e2d\uff0c\u8a31\u591a\u958b\u767c\u8005\u53ef\u80fd\u6703\u72af\u4e0b\u4e00\u4e9b\u5e38\u898b\u7684\u932f\u8aa4\uff0c\u9019\u4e9b\u932f\u8aa4\u4e0d\u50c5\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\uff0c\u9084\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e1f\u5931\u6216\u5b89\u5168\u6f0f\u6d1e\u3002\u672c\u6587\u5c07\u63a2\u8a0e MySQL \u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff0c\u4e26\u9644\u4e0a\u5341\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff0c\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u907f\u514d\u9019\u4e9b\u5e38\u898b\u7684\u9677\u9631\u3002<\/p>\n

1. \u4e0d\u4f7f\u7528\u7d22\u5f15<\/h2>\n

\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u5982\u679c\u5728\u5927\u578b\u8868\u4e2d\u672a\u4f7f\u7528\u7d22\u5f15\uff0c\u67e5\u8a62\u901f\u5ea6\u5c07\u6703\u975e\u5e38\u7de9\u6162\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u5305\u542b\u6578\u767e\u842c\u689d\u8a18\u9304\u7684\u7528\u6236\u8868\uff0c\u82e5\u672a\u5c0d\u7528\u6236\u540d\u5b57\u6bb5\u5efa\u7acb\u7d22\u5f15\uff0c\u67e5\u8a62\u7528\u6236\u540d\u7684\u64cd\u4f5c\u5c07\u9700\u8981\u5168\u8868\u6383\u63cf\uff0c\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n

SELECT * FROM users WHERE username = 'example';<\/code><\/pre>\n
2. \u5ffd\u7565\u6578\u64da\u985e\u578b<\/h2>\n
\u9078\u64c7\u4e0d\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u6703\u6d6a\u8cbb\u5b58\u5132\u7a7a\u9593\u4e26\u5f71\u97ff\u6027\u80fd\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u4e00\u500b\u53ea\u9700\u5b58\u5132 0 \u6216 1 \u7684\u5e03\u723e\u503c\uff0c\u537b\u4f7f\u7528\u4e86 INT \u985e\u578b\uff0c\u9019\u6a23\u6703\u5c0e\u81f4\u4e0d\u5fc5\u8981\u7684\u7a7a\u9593\u6d6a\u8cbb\u3002<\/p>\n
CREATE TABLE example (is_active TINYINT(1));<\/code><\/pre>\n
3. \u4e0d\u9032\u884c\u5099\u4efd<\/h2>\n
\u6578\u64da\u4e1f\u5931\u662f\u958b\u767c\u8005\u6700\u5bb3\u6015\u7684\u60c5\u6cc1\u4e4b\u4e00\u3002\u672a\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\u5c07\u4f7f\u6578\u64da\u9762\u81e8\u98a8\u96aa\u3002\u5efa\u8b70\u4f7f\u7528 MySQL \u7684\u5099\u4efd\u5de5\u5177\uff0c\u5982 mysqldump\uff0c\u5b9a\u671f\u5099\u4efd\u6578\u64da\u3002<\/p>\n
mysqldump -u username -p database_name > backup.sql<\/code><\/pre>\n
4. \u4f7f\u7528\u4e0d\u5b89\u5168\u7684\u7528\u6236\u8cec\u865f<\/h2>\n
\u4f7f\u7528 root \u7528\u6236\u9032\u884c\u65e5\u5e38\u64cd\u4f5c\u662f\u975e\u5e38\u5371\u96aa\u7684\u3002\u61c9\u8a72\u70ba\u6bcf\u500b\u61c9\u7528\u5275\u5efa\u5c08\u7528\u7684\u7528\u6236\u8cec\u865f\uff0c\u4e26\u50c5\u6388\u4e88\u5fc5\u8981\u7684\u6b0a\u9650\u3002<\/p>\n
CREATE USER 'app_user'@'localhost' IDENTIFIED BY 'password';<\/code><\/pre>\n
5. \u5ffd\u8996 SQL \u6ce8\u5165<\/h2>\n
SQL \u6ce8\u5165\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u64ca\u8005\u53ef\u4ee5\u901a\u904e\u64cd\u7e31 SQL \u67e5\u8a62\u4f86\u8a2a\u554f\u6216\u4fee\u6539\u6578\u64da\u3002\u4f7f\u7528\u9810\u8655\u7406\u8a9e\u53e5\u53ef\u4ee5\u6709\u6548\u9632\u6b62\u6b64\u985e\u653b\u64ca\u3002<\/p>\n
PREPARE stmt FROM 'SELECT * FROM users WHERE username = ?';<\/code><\/pre>\n
6. \u4e0d\u4f7f\u7528\u4e8b\u52d9<\/h2>\n
\u5728\u9032\u884c\u591a\u500b\u76f8\u95dc\u64cd\u4f5c\u6642\uff0c\u672a\u4f7f\u7528\u4e8b\u52d9\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u3002\u4e8b\u52d9\u53ef\u4ee5\u78ba\u4fdd\u4e00\u7d44\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\u3002<\/p>\n
START TRANSACTION; ... COMMIT;<\/code><\/pre>\n
7. \u5ffd\u7565\u6027\u80fd\u76e3\u63a7<\/h2>\n
\u4e0d\u5b9a\u671f\u76e3\u63a7\u6578\u64da\u5eab\u6027\u80fd\u6703\u4f7f\u554f\u984c\u7a4d\u58d3\u3002\u4f7f\u7528 MySQL \u7684\u6027\u80fd\u76e3\u63a7\u5de5\u5177\uff0c\u5982 EXPLAIN\uff0c\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u6027\u80fd\u74f6\u9838\u3002<\/p>\n
EXPLAIN SELECT * FROM users WHERE age > 30;<\/code><\/pre>\n
8. \u4e0d\u5408\u7406\u7684\u6578\u64da\u5eab\u8a2d\u8a08<\/h2>\n
\u6578\u64da\u5eab\u8a2d\u8a08\u4e0d\u7576\u6703\u5c0e\u81f4\u6578\u64da\u5197\u9918\u548c\u4e0d\u4e00\u81f4\u3002\u61c9\u9075\u5faa\u6b63\u898f\u5316\u539f\u5247\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u7d50\u69cb\u5408\u7406\u3002<\/p>\n
9. \u5ffd\u8996\u65e5\u8a8c\u7ba1\u7406<\/h2>\n
MySQL \u7684\u65e5\u8a8c\u6587\u4ef6\u53ef\u4ee5\u5e6b\u52a9\u8ffd\u8e64\u554f\u984c\u548c\u6027\u80fd\u3002\u672a\u5b9a\u671f\u6aa2\u67e5\u548c\u6e05\u7406\u65e5\u8a8c\u6587\u4ef6\u53ef\u80fd\u5c0e\u81f4\u78c1\u789f\u7a7a\u9593\u4e0d\u8db3\u3002<\/p>\n
10. \u4e0d\u66f4\u65b0 MySQL \u7248\u672c<\/h2>\n
\u4f7f\u7528\u904e\u6642\u7684 MySQL \u7248\u672c\u53ef\u80fd\u6703\u9762\u81e8\u5b89\u5168\u98a8\u96aa\u548c\u6027\u80fd\u554f\u984c\u3002\u5b9a\u671f\u66f4\u65b0\u5230\u6700\u65b0\u7248\u672c\u53ef\u4ee5\u7372\u5f97\u6700\u65b0\u7684\u529f\u80fd\u548c\u5b89\u5168\u4fee\u5fa9\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728\u4f7f\u7528 MySQL \u6578\u64da\u5eab\u6642\uff0c\u907f\u514d\u4e0a\u8ff0\u201c\u5341\u5b97\u7f6a\u201d\u5c07\u6709\u52a9\u65bc\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002\u901a\u904e\u5408\u7406\u7684\u8a2d\u8a08\u3001\u5b9a\u671f\u5099\u4efd\u548c\u6027\u80fd\u76e3\u63a7\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u904b\u884c\u3002\u82e5\u60a8\u9700\u8981\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684 MySQL \u6578\u64da\u5eab\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22 MySQL \u6578\u64da\u5eab\u7684\u201c\u5341\u5b97\u7f6a\u201d\uff0c\u4e86\u89e3\u5341\u5927\u7d93\u5178\u932f\u8aa4\u6848\u4f8b\uff0c\u907f\u514d\u5e38\u898b\u9677\u9631\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\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-75558","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75558","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=75558"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75558\/revisions"}],"predecessor-version":[{"id":75559,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75558\/revisions\/75559"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}