{"id":105026,"date":"2024-09-12T18:43:10","date_gmt":"2024-09-12T10:43:10","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=105026"},"modified":"2024-09-12T18:43:10","modified_gmt":"2024-09-12T10:43:10","slug":"mysql-linux-new","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/mysql-linux-new.html","title":{"rendered":"MySQL 8\u66f4\u65b0\u4e86\u4ec0\u4e48\uff1f"},"content":{"rendered":"<p>MySQL\u7684\u7b2c\u516b\u4e2a\u7248\u672c\u84c4\u52bf\u5f85\u53d1\uff0c\u5e76\u6709\u671b\u4e8e2018\u5e74\u53d1\u5e03\u3002\u5728MySQL 5.7.9\u7684\u9996\u4e2a\u901a\u7528\u7248\u672c\u63a8\u51fa\u540e\u768428\u4e2a\u6708\u5185\uff0cMySQL 8\u53d1\u5e03\u4e86\u4ece8.0.0\u52308.0.4\u8fd9\u4e94\u4e2a\u5019\u9009\u7248\u672c\u3002\u8fd9\u4e9b\u53d1\u5e03\u5019\u9009\u4ec5\u9488\u5bf9\u5f00\u53d1\u4f7f\u7528\uff0c\u800c\u4e0d\u5e94\u8be5\u751f\u4ea7\u7cfb\u7edf\u4e2d\u4f7f\u7528\u3002\u56e0\u4e3a\u8fd9\u4e9b\u5019\u9009\u7248\u5e76\u4e0d\u652f\u6301\u7248\u672c\u5347\u7ea7\uff0c\u7528\u6237\u53ef\u80fd\u4f1a\u78b0\u4e0a\u5019\u9009\u7248\u4e0e\u4e00\u822c\u53ef\u7528\uff08GA\uff09\u7248\u95f4\u5b58\u5728\u6570\u636e\u683c\u5f0f\u4e0d\u517c\u5bb9\u7684\u95ee\u9898\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-105257 size-medium aligncenter\" src=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2018\/05\/timg-300x225.jpg\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/lrxjmw.cn\/wp-content\/uploads\/2018\/05\/timg-300x225.jpg 300w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2018\/05\/timg-768x576.jpg 768w, https:\/\/lrxjmw.cn\/wp-content\/uploads\/2018\/05\/timg.jpg 800w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>\u7528\u6237\u9996\u5148\u53ef\u80fd\u6ce8\u610f\u5230\uff0c\u5728\u7248\u672c\u53f7\u4e0a\u51fa\u73b0\u4e86\u4e00\u4e2a\u8df3\u8dc3\u3002\u8fd9\u662f\u56e0\u4e3aMySQL\u4e22\u5f03\u4e86\u7248\u672c6\uff0c\u800c\u5c06\u7248\u672c7\u7528\u4e8e\u4f01\u4e1a\u4ea7\u54c1\u7ebf\u3002<\/p>\n<p>\u7a97\u53e3\u51fd\u6570\uff08Window Function\uff09\u662fMySQL 8\u4e2d\u6700\u4ee4\u4eba\u611f\u5174\u8da3\u7684\u7279\u6027\u3002\u5176\u5b83\u4e00\u4e9b\u6570\u636e\u5e93\u5f15\u64ce\u4e2d\u4e1a\u5df2\u5b9e\u73b0\u8be5\u7279\u6027\u3002\u7a97\u53e3\u51fd\u6570\u5bf9\u4e00\u7cfb\u5217\u67e5\u8be2\u884c\u6267\u884c\u805a\u5408\u8fd0\u7b97\uff0c\u5e76\u53ef\u5bf9\u6bcf\u4e00\u884c\u805a\u5408\u5468\u8fb9\u7684\u6570\u636e\u800c\u751f\u6210\u7ed3\u679c\u3002<\/p>\n<p>\u7c7b\u4f3c\u4e8e\u7a97\u51fd\u6570\uff0c\u9012\u5f52CTE\uff08Common Table Expressions\uff09\u652f\u6301\u7528\u6237\u5728\u4e0d\u4f7f\u7528\u6e38\u6807\u7684\u60c5\u51b5\u4e0b\uff0c\u6267\u884c\u5f15\u7528\u4e86\u81ea\u8eab\u7684\u5b50\u67e5\u8be2\u3002\u8be5\u5e7b\u706f\u7247\u5bf9\u6b64\u7279\u6027\u4f5c\u4e86\u8be6\u7ec6\u7684\u9610\u8ff0\u3002<\/p>\n<p>MySQL 8\u7684\u9ed8\u8ba4\u5b57\u7b26\u96c6\u652f\u6301\u4e5f\u4ece\u201cLatin1\u201d\u8f6c\u53d8\u4e3a\u201cutf8mb4\u201d\u3002utf8mb4\u652f\u6301\u6bcf\u4e2a\u5b57\u7b26\u4f7f\u7528\u591a\u81f3\u56db\u4e2a\u5b57\u8282\u3002\u5b83\u662f\u5f88\u591a\u5e94\u7528\u7684\u9996\u9009\u5b57\u7b26\u96c6\uff0c\u56e0\u4e3a\u5b83\u652f\u6301\u5927\u591a\u6570\u6269\u5c55\u5b57\u7b26\u5e8f\uff08\u4f8b\u5982\u65e5\u8bed\u6240\u7528\u7684utf8mb4_ja_0900_as_cs\u7b49\uff09\u4ee5\u53caemoji\u5b57\u7b26\u3002\u5728\u5b58\u50a8\u65b9\u9762\uff0cMySQL 8\u7684\u9ed8\u8ba4\u5b58\u50a8\u5f15\u64ce\u5c06\u4f7f\u7528InnoDB\u3002<\/p>\n<p>\u9690\u85cf\u7d22\u5f15\uff08Invisible indexes\uff09\u652f\u6301DBA\u5c06\u67d0\u4e2a\u7d22\u5f15\u8bbe\u4e3a\u4e0d\u88ab\u67e5\u8be2\u4f18\u5316\u5668\u6240\u8003\u8651\u3002\u8be5\u7279\u6027\u7528\u4e8e\u6d4b\u8bd5\u6307\u5b9a\u7684\u7d22\u5f15\u5bf9\u67e5\u8be2\u6027\u80fd\u7684\u5f71\u54cd\u60c5\u51b5\uff0c\u5e76\u53ef\u5728\u5bf9\u7528\u6237\u5b9e\u9645\u542f\u7528\u8be5\u7d22\u5f15\u524d\uff0c\u6062\u590d\u7d22\u5f15\u5728\u67e5\u8be2\u4f18\u5316\u4e2d\u7684\u53ef\u89c1\u6027\u3002MySQL 8\u8fd8\u5927\u5e45\u6539\u8fdb\u4e86\u5bf9JSON\u7684\u652f\u6301\uff0c\u6dfb\u52a0\u4e86\u57fa\u4e8e\u8def\u5f84\u67e5\u8be2\u53c2\u6570\u4eceJSON\u5b57\u6bb5\u4e2d\u62bd\u53d6\u6570\u636e\u7684JSON_EXTRACT()\u51fd\u6570\uff0c\u4ee5\u53ca\u7528\u4e8e\u5c06\u6570\u636e\u5206\u522b\u7ec4\u5408\u5230JSON\u6570\u7ec4\u548c\u5bf9\u8c61\u4e2d\u7684JSON_ARRAYAGG()\u548cJSON_OBJECTAGG()\u805a\u5408\u51fd\u6570\u3002<\/p>\n<p>MySQL 8\u63d0\u4f9b\u4e86\u7075\u6d3b\u7684\u89d2\u8272\u652f\u6301\uff0c\u652f\u6301CREATE\u3001DROP\u548cGRANT\u89d2\u8272\uff0c\u751a\u81f3\u53ef\u5c06\u4e00\u4e2a\u89d2\u8272\u8d4b\u4e88\u53e6\u4e00\u4e2a\u89d2\u8272\uff0c\u5e76\u53ef\u9650\u5236MySQL 8\u4e2d\u53ef\u7528\u7684\u89d2\u8272\u5bf9\u6bcf\u4e2a\u4f1a\u8bdd\u6216\u4e3b\u673a\u7684\u53ef\u7528\u6027\u3002\u7528\u6237\u4e5f\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528ROLES_GRAPHML()\u51fd\u6570\uff0c\u5b9e\u73b0\u89d2\u8272\u7684GraphML\u53ef\u89c6\u5316\u3002<\/p>\n<blockquote>\n<p style=\"text-align: left; color: #88a6a4;\">\u539f\u6587\u6765\u81ea\uff1a<a href=\"http:\/\/www.linuxsir.org\/linuxsjk\/14486.html\">http:\/\/www.linuxsir.org\/linuxsjk\/14486.html<\/a><\/p>\n<p style=\"text-align: left; color: #88a6a4;\">\u672c\u6587\u5730\u5740\uff1a<a href=\"https:\/\/lrxjmw.cn\/mysql-linux-new.html\">https:\/\/lrxjmw.cn\/mysql-linux-new.html<\/a><span style=\"float: right;\">\u7f16\u8f91\uff1a\u8d3e\u6625\u534e \u5ba1\u6838\u5458\uff1a\u9004\u589e\u5b9d<\/span><\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>MySQL\u7684\u7b2c\u516b\u4e2a\u7248\u672c\u84c4\u52bf\u5f85\u53d1\uff0c\u5e76\u6709\u671b\u4e8e2018\u5e74\u53d1\u5e03\u3002\u5728MySQL 5.7.9\u7684\u9996\u4e2a\u901a\u7528\u7248\u672c\u63a8\u51fa\u540e\u768428\u4e2a\u6708 [&hellip;]<\/p>\n","protected":false},"author":63,"featured_media":105241,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[55],"tags":[],"class_list":["post-105026","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-thread"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/105026","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/63"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=105026"}],"version-history":[{"count":9,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/105026\/revisions"}],"predecessor-version":[{"id":105582,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/105026\/revisions\/105582"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/105241"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=105026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=105026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=105026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}