{"id":44267,"date":"2024-12-01T09:54:08","date_gmt":"2024-12-01T01:54:08","guid":{"rendered":"https:\/\/fwq.ai\/blog\/44267\/"},"modified":"2024-12-01T09:54:08","modified_gmt":"2024-12-01T01:54:08","slug":"%e5%88%86%e6%9e%90mysql%e7%89%88%e6%9c%ac%e6%9b%b4%e6%96%b0%e7%9a%84%e6%83%85%e5%86%b5","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/44267\/","title":{"rendered":"\u5206\u6790MySQL\u7248\u672c\u66f4\u65b0\u7684\u60c5\u51b5"},"content":{"rendered":"

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

\u5206\u6790MySQL\u7248\u672c\u66f4\u65b0\u7684\u60c5\u51b5<\/h1>\n

\u968f\u7740\u6280\u672f\u4e0d\u65ad\u53d1\u5c55\uff0cMySQL \u4f5c\u4e3a\u4e00\u6b3e\u5f00\u6e90\u4e14\u5e94\u7528\u5e7f\u6cdb\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u4e0d\u65ad\u66f4\u65b0\u8fed\u4ee3\u7248\u672c\u4ee5\u6ee1\u8db3\u4e0d\u65ad\u53d8\u5316\u7684\u9700\u6c42\u3002\u672c\u6587\u5206\u6790\u4e86 MySQL \u7248\u672c\u66f4\u65b0\u60c5\u51b5\uff0c\u63a2\u8ba8\u4e86\u4ece\u5386\u53f2\u7248\u672c\u6f14\u53d8\u5230\u6700\u65b0\u7248\u672c MySQL 8.0 \u7684\u7279\u6027\uff0c\u5e76\u901a\u8fc7\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86 MySQL \u7248\u672c\u66f4\u65b0\u5e26\u6765\u7684\u53d8\u5316\u548c\u4f18\u5316\u3002<\/p>\n

MySQL\u7248\u672c\u66f4\u65b0\u60c5\u51b5\u5206\u6790<\/p>\n

MySQL\u4f5c\u4e3a\u4e00\u6b3e\u5f00\u6e90\u4e14\u4f7f\u7528\u5e7f\u6cdb\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5728\u4e0d\u65ad\u5730\u66f4\u65b0\u8fed\u4ee3\u7248\u672c\u4ee5\u9002\u5e94\u4e0d\u65ad\u53d1\u5c55\u7684\u9700\u6c42\u548c\u6280\u672f\u3002\u672c\u6587\u5c06\u5bf9MySQL\u7248\u672c\u66f4\u65b0\u60c5\u51b5\u8fdb\u884c\u5206\u6790\uff0c\u4ece\u5386\u53f2\u7248\u672c\u6f14\u53d8\u5230\u6700\u65b0\u7248\u672c\u7684\u7279\u6027\u8fdb\u884c\u63a2\u8ba8\uff0c\u5e76\u7ed3\u5408\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793aMySQL\u7248\u672c\u66f4\u65b0\u5e26\u6765\u7684\u4e00\u4e9b\u53d8\u5316\u548c\u4f18\u5316\u3002<\/p>\n

1. MySQL\u5386\u53f2\u7248\u672c\u6f14\u53d8<\/h3>\n

\u81ea\u8bde\u751f\u4ee5\u6765\uff0cMySQL\u7ecf\u5386\u4e86\u591a\u4e2a\u7248\u672c\u7684\u66f4\u65b0\u8fed\u4ee3\uff0c\u4e0d\u65ad\u5b8c\u5584\u548c\u4f18\u5316\uff0c\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u529f\u80fd\u3002\u5176\u4e2d\u4e00\u4e9b\u91cd\u8981\u7684\u7248\u672c\u5305\u62ec\uff1a<\/p>\n

    \n
  • MySQL 5.x\u7cfb\u5217\uff1a\u5305\u62ec5.0\u30015.1\u30015.5\u7b49\u7248\u672c\uff0c\u5f15\u5165\u4e86\u5b58\u50a8\u8fc7\u7a0b\u3001\u89e6\u53d1\u5668\u3001\u89c6\u56fe\u7b49\u529f\u80fd\uff0c\u5bf9\u6027\u80fd\u548c\u5b89\u5168\u6027\u505a\u4e86\u4e00\u5b9a\u7684\u4f18\u5316\u3002<\/li>\n
  • MySQL 8.0\uff1a\u4f5c\u4e3a\u5f53\u524d\u6700\u65b0\u7248\u672c\uff0c\u5f15\u5165\u4e86\u8bb8\u591a\u91cd\u5927\u7684\u6539\u8fdb\u548c\u65b0\u7279\u6027\uff0c\u6bd4\u5982\u6570\u636e\u5b57\u5178\u3001Window\u51fd\u6570\u3001\u5168\u5c40\u6570\u636e\u5b57\u5178\u3001JSON\u529f\u80fd\u7b49\u3002MySQL 8.0\u5728\u5b89\u5168\u6027\u3001\u6269\u5c55\u6027\u3001\u6027\u80fd\u7b49\u65b9\u9762\u90fd\u6709\u663e\u8457\u63d0\u5347\u3002<\/li>\n<\/ul>\n

    2. MySQL\u6700\u65b0\u7248\u672c\u7279\u6027\u5206\u6790<\/h3>\n

    MySQL 8.0\u4f5c\u4e3a\u5f53\u524d\u6700\u65b0\u7248\u672c\uff0c\u5177\u6709\u8bb8\u591a\u5f3a\u5927\u7684\u7279\u6027\u548c\u4f18\u52bf\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e9b\u4e3b\u8981\u7684\u7279\u6027\uff1a<\/p>\n

    2.1 \u6570\u636e\u5b57\u5178<\/h4>\n

    MySQL 8.0\u5f15\u5165\u4e86\u6570\u636e\u5b57\u5178\uff0c\u7528\u4e8e\u7ef4\u62a4\u6570\u636e\u5e93\u7ed3\u6784\u5143\u6570\u636e\u3002\u901a\u8fc7\u6570\u636e\u5b57\u5178\uff0c\u7528\u6237\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u67e5\u770b\u548c\u7ba1\u7406\u8868\u3001\u5217\u3001\u7d22\u5f15\u7b49\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u6570\u636e\u5b57\u5178\u67e5\u770b\u8868\u7ed3\u6784\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n

    SELECT column_name, data_type, is_nullable\nFROM information_schema.columns\nWHERE table_schema = 'your_database' AND table_name = 'your_table';<\/pre>\n
    2.2 Window\u51fd\u6570<\/h4>\n
    MySQL 8.0\u5f15\u5165\u4e86Window\u51fd\u6570\uff0c\u53ef\u4ee5\u8fdb\u884c\u7a97\u53e3\u64cd\u4f5c\u4ee5\u4fbf\u66f4\u7075\u6d3b\u5730\u8fdb\u884c\u6570\u636e\u5904\u7406\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u662f\u4e00\u4e2a\u8ba1\u7b97\u6bcf\u4e2a\u90e8\u95e8\u5458\u5de5\u5de5\u8d44\u6392\u540d\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
    SELECT employee_id, salary,\n       RANK() OVER (PARTITION BY department_id ORDER BY salary DESC) AS dept_rank\nFROM employees;<\/pre>\n
    2.3 JSON\u529f\u80fd<\/h4>\n
    MySQL 8.0\u52a0\u5f3a\u4e86\u5bf9JSON\u6570\u636e\u7c7b\u578b\u7684\u652f\u6301\uff0c\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684JSON\u51fd\u6570\u548c\u64cd\u4f5c\u7b26\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528JSON\u51fd\u6570\u67e5\u8be2JSON\u6570\u636e\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n
    SELECT doc->>\"$.name\" AS name\nFROM json_data_table\nWHERE doc->>\"$.age\" > 30;<\/pre>\n
    3. MySQL\u7248\u672c\u66f4\u65b0\u5e26\u6765\u7684\u5f71\u54cd<\/h3>\n
    \u968f\u7740MySQL\u7248\u672c\u7684\u66f4\u65b0\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5f88\u591a\u65b0\u529f\u80fd\u548c\u4f18\u5316\u5e26\u6765\u7684\u597d\u5904\uff0c\u5305\u62ec\u6027\u80fd\u63d0\u5347\u3001\u5b89\u5168\u52a0\u56fa\u548c\u529f\u80fd\u6269\u5c55\u3002\u4f46\u540c\u65f6\u4e5f\u53ef\u80fd\u4f1a\u5e26\u6765\u4e00\u4e9b\u4e0d\u517c\u5bb9\u95ee\u9898\u6216\u8005\u9700\u6c42\u8c03\u6574\uff0c\u5f00\u53d1\u8005\u5728\u5347\u7ea7\u7248\u672c\u65f6\u9700\u8981\u6ce8\u610f\u6f5c\u5728\u7684\u5f71\u54cd\u3002<\/p>\n
    \u7ed3\u8bed<\/h3>\n
    MySQL\u4f5c\u4e3a\u4e00\u6b3e\u5907\u53d7\u6b22\u8fce\u7684\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u4e0d\u65ad\u63a8\u51fa\u66f4\u65b0\u7248\u672c\u4ee5\u6ee1\u8db3\u7528\u6237\u7684\u9700\u6c42\u548c\u65e5\u76ca\u589e\u957f\u7684\u6280\u672f\u6311\u6218\u3002\u672c\u6587\u7b80\u8981\u5206\u6790\u4e86MySQL\u7248\u672c\u66f4\u65b0\u60c5\u51b5\uff0c\u5e76\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86\u6700\u65b0\u7248\u672cMySQL 8.0\u7684\u4e00\u4e9b\u91cd\u8981\u7279\u6027\u3002\u5e0c\u671b\u8bfb\u8005\u53ef\u4ee5\u66f4\u6df1\u5165\u5730\u4e86\u89e3MySQL\u4e0d\u540c\u7248\u672c\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u4ece\u800c\u66f4\u597d\u5730\u5229\u7528\u548c\u4f18\u5316MySQL\u5728\u5b9e\u9645\u5de5\u4f5c\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n
    \u4eca\u5929\u5173\u4e8e\u300a\u5206\u6790MySQL\u7248\u672c\u66f4\u65b0\u7684\u60c5\u51b5\u300b\u7684\u5185\u5bb9\u5c31\u4ecb\u7ecd\u5230\u8fd9\u91cc\u4e86\uff0c\u662f\u4e0d\u662f\u5b66\u8d77\u6765\u4e00\u76ee\u4e86\u7136\uff01\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u5173\u4e8emysql,\u5206\u6790,\u66f4\u65b0\u7684\u5185\u5bb9\u8bf7\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff01<\/p>\n
    \n
    \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    \u5206\u6790MySQL\u7248\u672c\u66f4\u65b0\u7684\u60c5\u51b5 \u968f\u7740\u6280\u672f\u4e0d\u65ad\u53d1\u5c55\uff0cMySQL \u4f5c\u4e3a\u4e00\u6b3e\u5f00\u6e90\u4e14\u5e94\u7528\u5e7f\u6cdb\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u4e0d\u65ad\u66f4\u65b0\u8fed\u4ee3\u7248\u672c\u4ee5\u6ee1\u8db3\u4e0d\u65ad\u53d8\u5316\u7684\u9700\u6c42\u3002\u672c\u6587\u5206\u6790\u4e86 MySQL \u7248\u672c\u66f4\u65b0\u60c5\u51b5\uff0c\u63a2\u8ba8\u4e86\u4ece\u5386\u53f2\u7248\u672c\u6f14\u53d8\u5230\u6700\u65b0\u7248\u672c MySQL 8.0 \u7684\u7279\u6027\uff0c\u5e76\u901a\u8fc7\u4ee3\u7801\u793a\u4f8b\u5c55\u793a\u4e86 MySQL \u7248\u672c\u66f4\u65b0\u5e26\u6765\u7684\u53d8\u5316\u548c\u4f18\u5316\u3002 MySQL\u7248\u672c\u66f4\u65b0\u60c5\u51b5\u5206\u6790 MySQL\u4f5c\u4e3a\u4e00\u6b3e\u5f00\u6e90\u4e14\u4f7f\u7528\u5e7f\u6cdb\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u5728\u4e0d\u65ad\u5730\u66f4\u65b0\u8fed\u4ee3\u7248\u672c\u4ee5\u9002\u5e94\u4e0d\u65ad\u53d1\u5c55\u7684\u9700\u6c42\u548c\u6280\u672f\u3002\u672c\u6587\u5c06\u5bf9MySQL\u7248\u672c\u66f4\u65b0\u60c5\u51b5\u8fdb\u884c\u5206\u6790\uff0c\u4ece\u5386\u53f2\u7248\u672c\u6f14\u53d8\u5230\u6700\u65b0\u7248\u672c\u7684\u7279\u6027\u8fdb\u884c\u63a2\u8ba8\uff0c\u5e76\u7ed3\u5408\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u5c55\u793aMySQL\u7248\u672c\u66f4\u65b0\u5e26\u6765\u7684\u4e00\u4e9b\u53d8\u5316\u548c\u4f18\u5316\u3002 1. MySQL\u5386\u53f2\u7248\u672c\u6f14\u53d8 \u81ea\u8bde\u751f\u4ee5\u6765\uff0cMySQL\u7ecf\u5386\u4e86\u591a\u4e2a\u7248\u672c\u7684\u66f4\u65b0\u8fed\u4ee3\uff0c\u4e0d\u65ad\u5b8c\u5584\u548c\u4f18\u5316\uff0c\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u529f\u80fd\u3002\u5176\u4e2d\u4e00\u4e9b\u91cd\u8981\u7684\u7248\u672c\u5305\u62ec\uff1a MySQL 5.x\u7cfb\u5217\uff1a\u5305\u62ec5.0\u30015.1\u30015.5\u7b49\u7248\u672c\uff0c\u5f15\u5165\u4e86\u5b58\u50a8\u8fc7\u7a0b\u3001\u89e6\u53d1\u5668\u3001\u89c6\u56fe\u7b49\u529f\u80fd\uff0c\u5bf9\u6027\u80fd\u548c\u5b89\u5168\u6027\u505a\u4e86\u4e00\u5b9a\u7684\u4f18\u5316\u3002 MySQL 8.0\uff1a\u4f5c\u4e3a\u5f53\u524d\u6700\u65b0\u7248\u672c\uff0c\u5f15\u5165\u4e86\u8bb8\u591a\u91cd\u5927\u7684\u6539\u8fdb\u548c\u65b0\u7279\u6027\uff0c\u6bd4\u5982\u6570\u636e\u5b57\u5178\u3001Window\u51fd\u6570\u3001\u5168\u5c40\u6570\u636e\u5b57\u5178\u3001JSON\u529f\u80fd\u7b49\u3002MySQL 8.0\u5728\u5b89\u5168\u6027\u3001\u6269\u5c55\u6027\u3001\u6027\u80fd\u7b49\u65b9\u9762\u90fd\u6709\u663e\u8457\u63d0\u5347\u3002 2. MySQL\u6700\u65b0\u7248\u672c\u7279\u6027\u5206\u6790 MySQL 8.0\u4f5c\u4e3a\u5f53\u524d\u6700\u65b0\u7248\u672c\uff0c\u5177\u6709\u8bb8\u591a\u5f3a\u5927\u7684\u7279\u6027\u548c\u4f18\u52bf\uff0c\u6211\u4eec\u6765\u770b\u4e00\u4e9b\u4e3b\u8981\u7684\u7279\u6027\uff1a 2.1 \u6570\u636e\u5b57\u5178 MySQL 8.0\u5f15\u5165\u4e86\u6570\u636e\u5b57\u5178\uff0c\u7528\u4e8e\u7ef4\u62a4\u6570\u636e\u5e93\u7ed3\u6784\u5143\u6570\u636e\u3002\u901a\u8fc7\u6570\u636e\u5b57\u5178\uff0c\u7528\u6237\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u67e5\u770b\u548c\u7ba1\u7406\u8868\u3001\u5217\u3001\u7d22\u5f15\u7b49\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u6570\u636e\u5b57\u5178\u67e5\u770b\u8868\u7ed3\u6784\u7684\u793a\u4f8b\u4ee3\u7801\uff1a SELECT column_name, data_type, is_nullable FROM information_schema.columns WHERE table_schema = ‘your_database’ AND table_name = ‘your_table’; 2.2 Window\u51fd\u6570 MySQL 8.0\u5f15\u5165\u4e86Window\u51fd\u6570\uff0c\u53ef\u4ee5\u8fdb\u884c\u7a97\u53e3\u64cd\u4f5c\u4ee5\u4fbf\u66f4\u7075\u6d3b\u5730\u8fdb\u884c\u6570\u636e\u5904\u7406\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u662f\u4e00\u4e2a\u8ba1\u7b97\u6bcf\u4e2a\u90e8\u95e8\u5458\u5de5\u5de5\u8d44\u6392\u540d\u7684\u793a\u4f8b\u4ee3\u7801\uff1a SELECT employee_id, salary, RANK() OVER (PARTITION BY department_id ORDER […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-44267","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/44267","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=44267"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/44267\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=44267"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=44267"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=44267"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}