{"id":199698,"date":"2025-05-06T09:46:44","date_gmt":"2025-05-06T01:46:44","guid":{"rendered":"https:\/\/server.hk\/cnblog\/199698\/"},"modified":"2025-05-06T09:46:44","modified_gmt":"2025-05-06T01:46:44","slug":"%e5%8e%9f%e5%88%99%e6%80%a7%e6%b7%bb%e5%8a%a0mysql%e7%b4%a2%e5%bc%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/199698\/","title":{"rendered":"\u539f\u5219\u6027\u6dfb\u52a0MySQL\u7d22\u5f15"},"content":{"rendered":"

<\/b> <\/p>\n

\u539f\u5219\u6027\u6dfb\u52a0MySQL\u7d22\u5f15<\/h1>\n

\u672c\u7bc7\u6587\u7ae0\u5411\u5927\u5bb6\u4ecb\u7ecd\u300a\u539f\u5219\u6027\u6dfb\u52a0MySQL\u7d22\u5f15\u300b\uff0c\u4e3b\u8981\u5305\u62ec\uff0c\u5177\u6709\u4e00\u5b9a\u7684\u53c2\u8003\u4ef7\u503c\uff0c\u9700\u8981\u7684\u670b\u53cb\u53ef\u4ee5\u53c2\u8003\u4e00\u4e0b\u3002<\/p>\n

MySQL\u7d22\u5f15\u6dfb\u52a0\u539f\u5219\u53ca\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u4e00\u3001\u5f15\u8a00
\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0c\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3001\u4f18\u5316\u6570\u636e\u5e93\u6027\u80fd\u7684\u91cd\u8981\u624b\u6bb5\u4e4b\u4e00\u3002\u6b63\u786e\u5730\u6dfb\u52a0\u7d22\u5f15\u53ef\u4ee5\u5927\u5927\u51cf\u5c11\u67e5\u8be2\u65f6\u7684\u78c1\u76d8IO\u64cd\u4f5c\uff0c\u63d0\u9ad8\u67e5\u8be2\u901f\u5ea6\u3002\u7136\u800c\uff0c\u5728\u6dfb\u52a0\u7d22\u5f15\u65f6\uff0c\u9700\u8981\u9075\u5faa\u4e00\u4e9b\u539f\u5219\uff0c\u4ee5\u4fdd\u8bc1\u7d22\u5f15\u7684\u6709\u6548\u6027\u548c\u6027\u80fd\u63d0\u5347\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4e00\u4e9b\u5e38\u89c1\u7684MySQL\u7d22\u5f15\u6dfb\u52a0\u539f\u5219\uff0c\u5e76\u7ed9\u51fa\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u4ee5\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u3002<\/p>\n

\u4e8c\u3001\u7d22\u5f15\u6dfb\u52a0\u539f\u5219<\/p>\n

1.\u9009\u62e9\u9002\u5f53\u7684\u5217\u4f5c\u4e3a\u7d22\u5f15
\u5728\u9009\u62e9\u5217\u4f5c\u4e3a\u7d22\u5f15\u65f6\uff0c\u5e94\u8be5\u4f18\u5148\u9009\u62e9\u7ecf\u5e38\u7528\u4e8e\u67e5\u8be2\u6761\u4ef6\u6216\u8fde\u63a5\u6761\u4ef6\u7684\u5217\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u4e3b\u952e\u548c\u5916\u952e\u5217\u662f\u6700\u5e38\u7528\u4e8e\u67e5\u8be2\u548c\u8fde\u63a5\u7684\u5217\uff0c\u56e0\u6b64\u5b83\u4eec\u901a\u5e38\u662f\u6700\u5408\u9002\u7684\u9009\u62e9\u3002\u53e6\u5916\uff0c\u4e00\u4e9b\u5e38\u7528\u4e8e\u6392\u5e8f\u6216\u5206\u7ec4\u7684\u5217\u4e5f\u53ef\u4ee5\u8003\u8651\u6dfb\u52a0\u7d22\u5f15\u3002<\/p>\n

2.\u907f\u514d\u65e0\u5fc5\u8981\u7684\u7d22\u5f15
\u867d\u7136\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff0c\u4f46\u4e5f\u4f1a\u589e\u52a0\u5199\u64cd\u4f5c\u7684\u8d1f\u62c5\u3002\u56e0\u6b64\uff0c\u4e0d\u5e94\u8be5\u4e3a\u6bcf\u4e2a\u5217\u90fd\u6dfb\u52a0\u7d22\u5f15\uff0c\u800c\u662f\u5e94\u8be5\u6839\u636e\u5b9e\u9645\u9700\u6c42\u8fdb\u884c\u9009\u62e9\u3002\u5bf9\u4e8e\u53ea\u6709\u5c11\u91cf\u4e0d\u91cd\u590d\u503c\u7684\u5217\u3001\u9891\u7e41\u66f4\u65b0\u7684\u5217\u6216\u8005\u957f\u5ea6\u8f83\u957f\u7684\u5217\uff0c\u901a\u5e38\u4e0d\u9002\u5408\u6dfb\u52a0\u7d22\u5f15\u3002<\/p>\n

3.\u4e3a\u8054\u5408\u67e5\u8be2\u6dfb\u52a0\u8054\u5408\u7d22\u5f15
\u5f53\u6211\u4eec\u8fdb\u884c\u8054\u5408\u67e5\u8be2\u65f6\uff0c\u53ef\u4ee5\u4e3a\u7ecf\u5e38\u4e00\u8d77\u67e5\u8be2\u7684\u5217\u6dfb\u52a0\u8054\u5408\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u4f8b\u5982\uff0c\u5bf9\u4e8e\u5b66\u751f\u8868\u4e0e\u6210\u7ee9\u8868\u7684\u67e5\u8be2\uff0c\u53ef\u4ee5\u4e3a\u5b66\u53f7\u548c\u8bfe\u7a0b\u53f7\u8fd9\u4e24\u4e2a\u5e38\u7528\u7684\u8054\u5408\u6761\u4ef6\u5217\u6dfb\u52a0\u8054\u5408\u7d22\u5f15\u3002<\/p>\n

4.\u6ce8\u610f\u7d22\u5f15\u7684\u987a\u5e8f
\u5728\u6dfb\u52a0\u8054\u5408\u7d22\u5f15\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u7d22\u5f15\u5b57\u6bb5\u7684\u987a\u5e8f\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5e94\u8be5\u5c06\u9009\u62e9\u6027\u66f4\u9ad8\u7684\u5217\u653e\u5728\u524d\u9762\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u3002\u9009\u62e9\u6027\u8d8a\u9ad8\u7684\u5217\uff0c\u610f\u5473\u7740\u8be5\u5217\u7684\u4e0d\u540c\u53d6\u503c\u8d8a\u591a\uff0c\u80fd\u591f\u8fc7\u6ee4\u6389\u66f4\u591a\u7684\u6570\u636e\u3002<\/p>\n

5.\u4e3a\u5b57\u7b26\u4e32\u5217\u6dfb\u52a0\u524d\u7f00\u7d22\u5f15
\u5bf9\u4e8e\u8f83\u957f\u7684\u5b57\u7b26\u4e32\u5217\uff0c\u4e3a\u4e86\u51cf\u5c11\u7d22\u5f15\u7684\u5927\u5c0f\u548c\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\uff0c\u53ef\u4ee5\u9009\u62e9\u4e3a\u5b57\u7b26\u4e32\u5217\u6dfb\u52a0\u524d\u7f00\u7d22\u5f15\u3002\u901a\u8fc7\u6307\u5b9a\u7d22\u5f15\u957f\u5ea6\uff0c\u53ef\u4ee5\u5927\u5927\u51cf\u5c0f\u7d22\u5f15\u7684\u5927\u5c0f\u548c\u5185\u5b58\u5360\u7528\uff0c\u4ece\u800c\u63d0\u5347\u6027\u80fd\u3002<\/p>\n

\u4e09\u3001\u4ee3\u7801\u793a\u4f8b<\/p>\n

1.\u4e3a\u5355\u5217\u6dfb\u52a0\u7d22\u5f15<\/p>\n

— \u4e3a\u5b66\u751f\u8868\u7684\u5b66\u53f7\u5217\u6dfb\u52a0\u7d22\u5f15
ALTER TABLE students ADD INDEX idx_student_id (student_id);<\/p>\n

2.\u4e3a\u8054\u5408\u67e5\u8be2\u6dfb\u52a0\u8054\u5408\u7d22\u5f15<\/p>\n

— \u4e3a\u5b66\u751f\u8868\u4e0e\u6210\u7ee9\u8868\u7684\u5b66\u53f7\u548c\u8bfe\u7a0b\u53f7\u5217\u6dfb\u52a0\u8054\u5408\u7d22\u5f15
ALTER TABLE students ADD INDEX idx_student_course (student_id, course_id);<\/p>\n

\u56db\u3001\u603b\u7ed3
\u5728MySQL\u6570\u636e\u5e93\u4e2d\uff0c\u6b63\u786e\u5730\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u67e5\u8be2\u6548\u7387\u548c\u4f18\u5316\u6570\u636e\u5e93\u6027\u80fd\u3002\u5728\u6dfb\u52a0\u7d22\u5f15\u65f6\uff0c\u6211\u4eec\u9700\u8981\u9009\u62e9\u9002\u5f53\u7684\u5217\u3001\u907f\u514d\u65e0\u5fc5\u8981\u7684\u7d22\u5f15\u3001\u4e3a\u8054\u5408\u67e5\u8be2\u6dfb\u52a0\u8054\u5408\u7d22\u5f15\u3001\u6ce8\u610f\u7d22\u5f15\u987a\u5e8f\uff0c\u5e76\u4e3a\u8f83\u957f\u7684\u5b57\u7b26\u4e32\u5217\u6dfb\u52a0\u524d\u7f00\u7d22\u5f15\u3002\u901a\u8fc7\u9075\u5faa\u8fd9\u4e9b\u539f\u5219\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528\u7d22\u5f15\u6765\u4f18\u5316\u6570\u636e\u5e93\u67e5\u8be2\u3002\u540c\u65f6\uff0c\u5e0c\u671b\u672c\u6587\u6240\u7ed9\u7684\u4ee3\u7801\u793a\u4f8b\u80fd\u591f\u5bf9\u8bfb\u8005\u6709\u6240\u5e2e\u52a9\uff0c\u4f7f\u4ed6\u4eec\u80fd\u591f\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528MySQL\u7d22\u5f15\u7684\u76f8\u5173\u77e5\u8bc6\u3002<\/p>\n

\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6570\u636e\u5e93\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n

\n
\n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"

\u539f\u5219\u6027\u6dfb\u52a0MySQL\u7d22\u5f15 \u672c\u7bc7\u6587...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-199698","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199698","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=199698"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/199698\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=199698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=199698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=199698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}