{"id":77428,"date":"2024-10-16T10:49:15","date_gmt":"2024-10-16T02:49:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/77428\/"},"modified":"2024-10-16T10:49:16","modified_gmt":"2024-10-16T02:49:16","slug":"mysql%e8%aa%9e%e5%8f%a5%e5%84%aa%e5%8c%96%e7%9a%84%e5%8e%9f%e5%89%87%e6%a6%82%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/77428\/","title":{"rendered":"MySQL\u8a9e\u53e5\u512a\u5316\u7684\u539f\u5247\u6982\u8ff0"},"content":{"rendered":"<h1 id=\"mysql%e8%aa%9e%e5%8f%a5%e5%84%aa%e5%8c%96%e7%9a%84%e5%8e%9f%e5%89%87%e6%a6%82%e8%bf%b0-OlyoHmAyPR\">MySQL\u8a9e\u53e5\u512a\u5316\u7684\u539f\u5247\u6982\u8ff0<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u5c0d\u65bc\u61c9\u7528\u7a0b\u5e8f\u7684\u6574\u9ad4\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002MySQL\u4f5c\u70ba\u4e00\u500b\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u70ba\u4e86\u78ba\u4fddMySQL\u7684\u9ad8\u6548\u904b\u884c\uff0c\u8a9e\u53e5\u512a\u5316\u662f\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u74b0\u3002\u672c\u6587\u5c07\u63a2\u8a0eMySQL\u8a9e\u53e5\u512a\u5316\u7684\u57fa\u672c\u539f\u5247\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u63d0\u5347\u6578\u64da\u5eab\u6027\u80fd\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95-OlyoHmAyPR\">1. 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id=\"2-%e5%84%aa%e5%8c%96%e6%9f%a5%e8%a9%a2%e8%aa%9e%e5%8f%a5-OlyoHmAyPR\">2. \u512a\u5316\u67e5\u8a62\u8a9e\u53e5<\/h2>\n<p>\u64b0\u5beb\u9ad8\u6548\u7684\u67e5\u8a62\u8a9e\u53e5\u662f\u512a\u5316\u7684\u53e6\u4e00\u500b\u91cd\u8981\u65b9\u9762\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u512a\u5316\u67e5\u8a62\u7684\u6280\u5de7\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528SELECT\u8a9e\u53e5\u6642\uff0c\u50c5\u9078\u64c7\u6240\u9700\u7684\u5217\uff0c\u800c\u4e0d\u662f\u4f7f\u7528SELECT *\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u7684\u5927\u5c0f\u3002<\/li>\n<li>\u907f\u514d\u5728WHERE\u5b50\u53e5\u4e2d\u4f7f\u7528\u51fd\u6578\uff0c\u56e0\u70ba\u9019\u6703\u5c0e\u81f4\u5168\u8868\u6383\u63cf\u3002\u4f8b\u5982\uff0c\u5c07 <code>WHERE YEAR(date_column) = 2023<\/code> \u6539\u70ba <code>WHERE date_column BETWEEN '2023-01-01' AND '2023-12-31'<\/code>\u3002<\/li>\n<li>\u4f7f\u7528JOIN\u800c\u4e0d\u662f\u5b50\u67e5\u8a62\uff0c\u56e0\u70baJOIN\u901a\u5e38\u80fd\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8%e5%90%88%e9%81%a9%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-OlyoHmAyPR\">3. \u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4e0d\u50c5\u80fd\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\uff0c\u9084\u80fd\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>\u5c0d\u65bc\u6574\u6578\uff0c\u4f7f\u7528INT\u800c\u4e0d\u662fBIGINT\uff0c\u9664\u975e\u9700\u8981\u5b58\u5132\u975e\u5e38\u5927\u7684\u6578\u5b57\u3002<\/li>\n<li>\u5c0d\u65bc\u5b57\u7b26\u578b\u6578\u64da\uff0c\u4f7f\u7528VARCHAR\u800c\u4e0d\u662fCHAR\uff0c\u56e0\u70baVARCHAR\u6703\u6839\u64da\u5be6\u969b\u9577\u5ea6\u5b58\u5132\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e6%b8%9b%e5%b0%91%e9%8e%96%e5%ae%9a%e5%92%8c%e6%8f%90%e9%ab%98%e4%b8%a6%e7%99%bc%e6%80%a7-OlyoHmAyPR\">4. \u6e1b\u5c11\u9396\u5b9a\u548c\u63d0\u9ad8\u4e26\u767c\u6027<\/h2>\n<p>\u5728\u9ad8\u4e26\u767c\u74b0\u5883\u4e2d\uff0c\u9396\u5b9a\u53ef\u80fd\u6703\u6210\u70ba\u6027\u80fd\u74f6\u9838\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6e1b\u5c11\u9396\u5b9a\u7684\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528\u884c\u7d1a\u9396\u800c\u4e0d\u662f\u8868\u7d1a\u9396\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u4e26\u767c\u6027\u3002<\/li>\n<li>\u76e1\u91cf\u6e1b\u5c11\u4e8b\u52d9\u7684\u6301\u7e8c\u6642\u9593\uff0c\u907f\u514d\u9577\u6642\u9593\u9396\u5b9a\u8cc7\u6e90\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e5%ae%9a%e6%9c%9f%e7%b6%ad%e8%ad%b7%e6%95%b8%e6%93%9a%e5%ba%ab-OlyoHmAyPR\">5. \u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab<\/h2>\n<p>\u5b9a\u671f\u7684\u6578\u64da\u5eab\u7dad\u8b77\u53ef\u4ee5\u78ba\u4fdd\u5176\u6027\u80fd\u7a69\u5b9a\u3002\u9019\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5b9a\u671f\u57f7\u884cANALYZE TABLE\u548cOPTIMIZE TABLE\u547d\u4ee4\uff0c\u4ee5\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u548c\u91cd\u5efa\u8868\u3002<\/li>\n<li>\u76e3\u63a7\u6162\u67e5\u8a62\u65e5\u8a8c\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u4e26\u9032\u884c\u512a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-OlyoHmAyPR\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u8a9e\u53e5\u512a\u5316\u662f\u4e00\u500b\u6301\u7e8c\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u591a\u500b\u65b9\u9762\u7684\u8003\u91cf\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u7d22\u5f15\u3001\u512a\u5316\u67e5\u8a62\u8a9e\u53e5\u3001\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3001\u6e1b\u5c11\u9396\u5b9a\u4ee5\u53ca\u5b9a\u671f\u7dad\u8b77\u6578\u64da\u5eab\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u5347\u6578\u64da\u5eab\u7684\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u90fd\u80fd\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u8a9e\u53e5\u512a\u5316\u7684\u57fa\u672c\u539f\u5247\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\uff0c\u6e1b\u5c11\u8cc7\u6e90\u6d88\u8017\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u6027\u80fd\u6700\u4f73\u5316\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-77428","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77428","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=77428"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77428\/revisions"}],"predecessor-version":[{"id":77429,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77428\/revisions\/77429"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=77428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=77428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=77428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}