{"id":75672,"date":"2024-10-16T00:15:19","date_gmt":"2024-10-15T16:15:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/75672\/"},"modified":"2024-10-16T00:15:19","modified_gmt":"2024-10-15T16:15:19","slug":"mysql%ef%bc%9a%e6%95%b8%e6%93%9a%e7%b5%90%e6%a7%8b%e5%8f%8a%e7%ae%97%e6%b3%95%e5%8e%9f%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/75672\/","title":{"rendered":"MySQL\uff1a\u6578\u64da\u7d50\u69cb\u53ca\u7b97\u6cd5\u539f\u7406"},"content":{"rendered":"

MySQL\uff1a\u6578\u64da\u7d50\u69cb\u53ca\u7b97\u6cd5\u539f\u7406<\/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\u5b83\u7684\u6838\u5fc3\u5728\u65bc\u9ad8\u6548\u7684\u6578\u64da\u7d50\u69cb\u548c\u7b97\u6cd5\u539f\u7406\uff0c\u9019\u4e9b\u539f\u7406\u4f7f\u5f97 MySQL \u80fd\u5920\u5feb\u901f\u8655\u7406\u5927\u91cf\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e MySQL \u7684\u6578\u64da\u7d50\u69cb\u53ca\u5176\u80cc\u5f8c\u7684\u7b97\u6cd5\u539f\u7406\u3002<\/p>\n

\u6578\u64da\u7d50\u69cb<\/h2>\n

MySQL \u7684\u6578\u64da\u7d50\u69cb\u4e3b\u8981\u5305\u62ec\u8868\u3001\u7d22\u5f15\u3001\u6578\u64da\u9801\u548c\u7de9\u885d\u6c60\u7b49\u3002\u9019\u4e9b\u7d50\u69cb\u5171\u540c\u4f5c\u7528\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u9ad8\u6548\u5b58\u53d6\u548c\u7ba1\u7406\u3002<\/p>\n

1. \u8868<\/h3>\n

\u5728 MySQL \u4e2d\uff0c\u6578\u64da\u4ee5\u8868\u7684\u5f62\u5f0f\u5b58\u5132\u3002\u6bcf\u500b\u8868\u7531\u884c\u548c\u5217\u7d44\u6210\uff0c\u884c\u4ee3\u8868\u8a18\u9304\uff0c\u5217\u4ee3\u8868\u5c6c\u6027\u3002MySQL \u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u5305\u62ec\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u4e32\u548c\u65e5\u671f\u7b49\u3002<\/p>\n

2. \u7d22\u5f15<\/h3>\n

\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u7684\u91cd\u8981\u6578\u64da\u7d50\u69cb\u3002MySQL \u652f\u6301\u591a\u7a2e\u7d22\u5f15\u985e\u578b\uff0c\u5305\u62ec B-tree \u7d22\u5f15\u3001\u54c8\u5e0c\u7d22\u5f15\u548c\u5168\u6587\u7d22\u5f15\u7b49\u3002B-tree \u7d22\u5f15\u662f\u6700\u5e38\u7528\u7684\u7d22\u5f15\u985e\u578b\uff0c\u56e0\u70ba\u5b83\u80fd\u5920\u6709\u6548\u5730\u652f\u6301\u7bc4\u570d\u67e5\u8a62\u3002<\/p>\n

CREATE INDEX idx_name ON table_name (column_name);\n<\/code><\/pre>\n
3. \u6578\u64da\u9801<\/h3>\n
\u6578\u64da\u9801\u662f MySQL \u5b58\u5132\u6578\u64da\u7684\u57fa\u672c\u55ae\u4f4d\u3002\u6bcf\u500b\u6578\u64da\u9801\u901a\u5e38\u70ba 16KB\uff0c\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97 MySQL \u80fd\u5920\u9ad8\u6548\u5730\u8b80\u53d6\u548c\u5beb\u5165\u6578\u64da\u3002\u6578\u64da\u9801\u4e2d\u5305\u542b\u4e86\u591a\u500b\u8a18\u9304\uff0c\u4e26\u4e14\u6bcf\u500b\u9801\u9762\u90fd\u6709\u4e00\u500b\u9801\u982d\uff0c\u7528\u65bc\u5b58\u5132\u9801\u9762\u7684\u5143\u6578\u64da\u3002<\/p>\n
4. \u7de9\u885d\u6c60<\/h3>\n
\u7de9\u885d\u6c60\u662f MySQL \u7528\u65bc\u63d0\u9ad8\u6027\u80fd\u7684\u5167\u5b58\u5340\u57df\u3002\u5b83\u5b58\u5132\u4e86\u6700\u8fd1\u4f7f\u7528\u7684\u6578\u64da\u9801\uff0c\u5f9e\u800c\u6e1b\u5c11\u4e86\u78c1\u789f I\/O \u64cd\u4f5c\u3002\u7576\u6578\u64da\u88ab\u8acb\u6c42\u6642\uff0cMySQL \u9996\u5148\u6703\u6aa2\u67e5\u7de9\u885d\u6c60\uff0c\u5982\u679c\u6578\u64da\u5df2\u7d93\u5b58\u5728\u65bc\u7de9\u885d\u6c60\u4e2d\uff0c\u5247\u76f4\u63a5\u5f9e\u5167\u5b58\u4e2d\u8b80\u53d6\uff0c\u9019\u6a23\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n
\u7b97\u6cd5\u539f\u7406<\/h2>\n
MySQL \u7684\u7b97\u6cd5\u539f\u7406\u4e3b\u8981\u5305\u62ec\u67e5\u8a62\u512a\u5316\u3001\u4e8b\u52d9\u7ba1\u7406\u548c\u9396\u5b9a\u6a5f\u5236\u7b49\u3002<\/p>\n
1. \u67e5\u8a62\u512a\u5316<\/h3>\n
\u67e5\u8a62\u512a\u5316\u662f MySQL \u4e2d\u4e00\u500b\u91cd\u8981\u7684\u904e\u7a0b\u3002\u7576\u7528\u6236\u63d0\u4ea4\u67e5\u8a62\u6642\uff0cMySQL \u6703\u5206\u6790\u67e5\u8a62\u8a9e\u53e5\uff0c\u4e26\u751f\u6210\u4e00\u500b\u57f7\u884c\u8a08\u5283\u3002\u9019\u500b\u8a08\u5283\u6703\u8003\u616e\u5230\u7d22\u5f15\u7684\u4f7f\u7528\u3001\u8868\u7684\u9023\u63a5\u9806\u5e8f\u7b49\u56e0\u7d20\uff0c\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7684\u9ad8\u6548\u57f7\u884c\u3002<\/p>\n
EXPLAIN SELECT * FROM table_name WHERE column_name = 'value';\n<\/code><\/pre>\n
2. \u4e8b\u52d9\u7ba1\u7406<\/h3>\n
MySQL \u652f\u6301 ACID \u4e8b\u52d9\u7279\u6027\uff0c\u9019\u610f\u5473\u8457\u5b83\u80fd\u5920\u4fdd\u8b49\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u4e8b\u52d9\u7ba1\u7406\u7684\u6838\u5fc3\u5728\u65bc\u4e8b\u52d9\u7684\u958b\u59cb\u3001\u63d0\u4ea4\u548c\u56de\u6efe\u3002\u9019\u4e9b\u64cd\u4f5c\u78ba\u4fdd\u4e86\u5728\u591a\u7528\u6236\u74b0\u5883\u4e0b\u6578\u64da\u7684\u5b89\u5168\u6027\u3002<\/p>\n
3. \u9396\u5b9a\u6a5f\u5236<\/h3>\n
\u70ba\u4e86\u9632\u6b62\u6578\u64da\u7af6\u722d\uff0cMySQL \u63d0\u4f9b\u4e86\u591a\u7a2e\u9396\u5b9a\u6a5f\u5236\uff0c\u5305\u62ec\u884c\u9396\u548c\u8868\u9396\u3002\u884c\u9396\u5141\u8a31\u591a\u500b\u4e8b\u52d9\u540c\u6642\u8a2a\u554f\u4e0d\u540c\u7684\u884c\uff0c\u800c\u8868\u9396\u5247\u6703\u9396\u5b9a\u6574\u500b\u8868\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u5176\u4ed6\u4e8b\u52d9\u5c0d\u8a72\u8868\u7684\u8a2a\u554f\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
MySQL \u7684\u6578\u64da\u7d50\u69cb\u548c\u7b97\u6cd5\u539f\u7406\u662f\u5176\u9ad8\u6548\u6027\u80fd\u7684\u57fa\u790e\u3002\u901a\u904e\u5408\u7406\u7684\u6578\u64da\u7d50\u69cb\u8a2d\u8a08\u548c\u512a\u5316\u7684\u7b97\u6cd5\uff0cMySQL \u80fd\u5920\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u4fdd\u6301\u9ad8\u6548\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 \u9999\u6e2fVPS<\/a> \u670d\u52d9\u4f86\u904b\u884c\u60a8\u7684 MySQL \u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u89e3\u6c7a\u65b9\u6848\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6df1\u5165\u63a2\u8a0eMySQL\u7684\u6578\u64da\u7d50\u69cb\u8207\u7b97\u6cd5\u539f\u7406\uff0c\u4e86\u89e3\u5176\u9ad8\u6548\u6578\u64da\u8655\u7406\u8207\u5b58\u5132\u6280\u8853\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u80fd\u529b\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-75672","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75672","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=75672"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75672\/revisions"}],"predecessor-version":[{"id":75673,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/75672\/revisions\/75673"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=75672"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=75672"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=75672"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}