{"id":75930,"date":"2024-10-16T02:25:22","date_gmt":"2024-10-15T18:25:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75930\/"},"modified":"2024-10-16T02:25:23","modified_gmt":"2024-10-15T18:25:23","slug":"mysql-%e7%9a%84%e5%9b%9b%e7%a8%ae%e4%b8%8d%e5%90%8c%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75930\/","title":{"rendered":"MySQL \u7684\u56db\u7a2e\u4e0d\u540c\u67e5\u8a62\u7684\u5206\u6790"},"content":{"rendered":"

MySQL \u7684\u56db\u7a2e\u4e0d\u540c\u67e5\u8a62\u7684\u5206\u6790<\/h1>\n

MySQL \u662f\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u67e5\u8a62\u662f MySQL \u7684\u6838\u5fc3\u529f\u80fd\u4e4b\u4e00\uff0c\u80fd\u5920\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u3001\u66f4\u65b0\u548c\u7ba1\u7406\u6578\u64da\u3002\u672c\u6587\u5c07\u5206\u6790 MySQL \u4e2d\u7684\u56db\u7a2e\u4e0d\u540c\u67e5\u8a62\u985e\u578b\uff1a\u9078\u64c7\u67e5\u8a62\u3001\u63d2\u5165\u67e5\u8a62\u3001\u66f4\u65b0\u67e5\u8a62\u548c\u522a\u9664\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

1. \u9078\u64c7\u67e5\u8a62 (SELECT)<\/h2>\n

\u9078\u64c7\u67e5\u8a62\u662f\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u7684\u6700\u57fa\u672c\u67e5\u8a62\u3002\u5b83\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u904e\u6ffe\u6578\u64da\uff0c\u4e26\u4e14\u53ef\u4ee5\u9078\u64c7\u7279\u5b9a\u7684\u5217\u3002<\/p>\n

SELECT column1, column2 FROM table_name WHERE condition;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u540d\u70ba employees<\/code> \u7684\u8868\uff0c\u60a8\u60f3\u8981\u6aa2\u7d22\u6240\u6709\u54e1\u5de5\u7684\u59d3\u540d\u548c\u8077\u4f4d\uff1a<\/p>\n
SELECT name, position FROM employees;<\/code><\/pre>\n
\u5982\u679c\u60a8\u53ea\u60f3\u6aa2\u7d22\u67d0\u500b\u7279\u5b9a\u8077\u4f4d\u7684\u54e1\u5de5\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
SELECT name, position FROM employees WHERE position = 'Manager';<\/code><\/pre>\n
2. \u63d2\u5165\u67e5\u8a62 (INSERT)<\/h2>\n
\u63d2\u5165\u67e5\u8a62\u7528\u65bc\u5c07\u65b0\u6578\u64da\u6dfb\u52a0\u5230\u6578\u64da\u5eab\u4e2d\u3002\u9019\u7a2e\u67e5\u8a62\u53ef\u4ee5\u63d2\u5165\u55ae\u884c\u6216\u591a\u884c\u6578\u64da\u3002<\/p>\n
INSERT INTO table_name (column1, column2) VALUES (value1, value2);<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5411 employees<\/code> \u8868\u4e2d\u63d2\u5165\u4e00\u540d\u65b0\u54e1\u5de5\u7684\u6578\u64da\uff1a<\/p>\n
INSERT INTO employees (name, position) VALUES ('John Doe', 'Developer');<\/code><\/pre>\n
\u5982\u679c\u8981\u63d2\u5165\u591a\u540d\u54e1\u5de5\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n
INSERT INTO employees (name, position) VALUES ('Jane Smith', 'Designer'), ('Mike Brown', 'Manager');<\/code><\/pre>\n
3. \u66f4\u65b0\u67e5\u8a62 (UPDATE)<\/h2>\n
\u66f4\u65b0\u67e5\u8a62\u7528\u65bc\u4fee\u6539\u5df2\u5b58\u5728\u7684\u6578\u64da\u3002\u9019\u7a2e\u67e5\u8a62\u901a\u5e38\u9700\u8981\u6307\u5b9a\u8981\u66f4\u65b0\u7684\u884c\u548c\u65b0\u503c\u3002<\/p>\n
UPDATE table_name SET column1 = value1, column2 = value2 WHERE condition;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u5047\u8a2d\u60a8\u60f3\u8981\u5c07\u67d0\u4f4d\u54e1\u5de5\u7684\u8077\u4f4d\u5f9e ‘Developer’ \u66f4\u65b0\u70ba ‘Senior Developer’\uff1a<\/p>\n
UPDATE employees SET position = 'Senior Developer' WHERE name = 'John Doe';<\/code><\/pre>\n
4. \u522a\u9664\u67e5\u8a62 (DELETE)<\/h2>\n
\u522a\u9664\u67e5\u8a62\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u522a\u9664\u4e0d\u518d\u9700\u8981\u7684\u6578\u64da\u3002\u9019\u7a2e\u67e5\u8a62\u9700\u8981\u5c0f\u5fc3\u4f7f\u7528\uff0c\u4ee5\u514d\u610f\u5916\u522a\u9664\u91cd\u8981\u6578\u64da\u3002<\/p>\n
DELETE FROM table_name WHERE condition;<\/code><\/pre>\n
\u4f8b\u5982\uff0c\u522a\u9664\u540d\u70ba ‘Mike Brown’ \u7684\u54e1\u5de5\uff1a<\/p>\n
DELETE FROM employees WHERE name = 'Mike Brown';<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
\u5728 MySQL \u4e2d\uff0c\u67e5\u8a62\u662f\u6578\u64da\u64cd\u4f5c\u7684\u57fa\u790e\uff0c\u4e86\u89e3\u4e0d\u540c\u985e\u578b\u7684\u67e5\u8a62\u5c0d\u65bc\u6709\u6548\u7ba1\u7406\u6578\u64da\u81f3\u95dc\u91cd\u8981\u3002\u9078\u64c7\u67e5\u8a62\u3001\u63d2\u5165\u67e5\u8a62\u3001\u66f4\u65b0\u67e5\u8a62\u548c\u522a\u9664\u67e5\u8a62\u5404\u81ea\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u548c\u8a9e\u6cd5\uff0c\u638c\u63e1\u9019\u4e9b\u67e5\u8a62\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u9ad8\u6548\u5730\u8207\u6578\u64da\u5eab\u4e92\u52d5\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684 MySQL \u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c\u6211\u5011\u7684 \u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22 MySQL \u7684\u56db\u7a2e\u4e0d\u540c\u67e5\u8a62\u985e\u578b\uff0c\u6df1\u5165\u5206\u6790\u5176\u7279\u9ede\u8207\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\u8207\u6027\u80fd\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-75930","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75930","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=75930"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75930\/revisions"}],"predecessor-version":[{"id":75931,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75930\/revisions\/75931"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75930"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75930"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75930"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}