{"id":200018,"date":"2025-05-06T08:51:01","date_gmt":"2025-05-06T00:51:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/200018\/"},"modified":"2025-05-06T08:51:01","modified_gmt":"2025-05-06T00:51:01","slug":"%e8%ae%a4%e8%af%86mysql%e7%b4%a2%e5%bc%95%e5%89%8d%e7%bc%80%e7%9a%84%e5%85%b3%e9%94%ae%e6%80%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/200018\/","title":{"rendered":"\u8ba4\u8bc6MySQL\u7d22\u5f15\u524d\u7f00\u7684\u5173\u952e\u6027"},"content":{"rendered":"

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

\u8ba4\u8bc6MySQL\u7d22\u5f15\u524d\u7f00\u7684\u5173\u952e\u6027<\/h1>\n

\u7f16\u7a0b\u5e76\u4e0d\u662f\u4e00\u4e2a\u673a\u68b0\u6027\u7684\u5de5\u4f5c\uff0c\u800c\u662f\u9700\u8981\u6709\u601d\u8003\uff0c\u6709\u521b\u65b0\u7684\u5de5\u4f5c\uff0c\u8bed\u6cd5\u662f\u56fa\u5b9a\u7684\uff0c\u4f46\u89e3\u51b3\u95ee\u9898\u7684\u601d\u8def\u5219\u662f\u4f9d\u9760\u4eba\u7684\u601d\u7ef4\uff0c\u8fd9\u5c31\u9700\u8981\u6211\u4eec\u575a\u6301\u5b66\u4e60\u548c\u66f4\u65b0\u81ea\u5df1\u7684\u77e5\u8bc6\u3002\u4eca\u5929\u4e3b\u673a\u5b9d\u8d1d\u5c31\u6574\u7406\u5206\u4eab\u300a\u8ba4\u8bc6MySQL\u7d22\u5f15\u524d\u7f00\u7684\u5173\u952e\u6027\u300b\uff0c\u6587\u7ae0\u8bb2\u89e3\u7684\u77e5\u8bc6\u70b9\u4e3b\u8981\u5305\u62ec\uff0c\u5982\u679c\u4f60\u5bf9\u6570\u636e\u5e93\u65b9\u9762\u7684\u77e5\u8bc6\u70b9\u611f\u5174\u8da3\uff0c\u5c31\u4e0d\u8981\u9519\u8fc7\u4e3b\u673a\u5b9d\u8d1d\uff0c\u5728\u8fd9\u53ef\u4ee5\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5f00\u53d1\u80fd\u529b\u7684\u63d0\u5347\u3002<\/p>\n

\u4e86\u89e3MySQL\u524d\u7f00\u7d22\u5f15\u7684\u91cd\u8981\u6027\uff0c\u9700\u8981\u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/p>\n

\u5728\u6570\u636e\u5e93\u7cfb\u7edf\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u79cd\u63d0\u9ad8\u6570\u636e\u68c0\u7d22\u6548\u7387\u7684\u91cd\u8981\u5de5\u5177\u3002MySQL\u4f5c\u4e3a\u4e00\u4e2a\u5f3a\u5927\u7684\u5173\u7cfb\u578b\u6570\u636e\u5e93\u7ba1\u7406\u7cfb\u7edf\uff0c\u7d22\u5f15\u5728\u5176\u4e2d\u8d77\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002\u5728MySQL\u4e2d\uff0c\u9664\u4e86\u666e\u901a\u7684\u7d22\u5f15\u5916\uff0c\u8fd8\u6709\u524d\u7f00\u7d22\u5f15\u8fd9\u4e00\u7279\u6b8a\u7684\u7d22\u5f15\u7c7b\u578b\u3002\u672c\u6587\u5c06\u4ecb\u7ecdMySQL\u524d\u7f00\u7d22\u5f15\u7684\u6982\u5ff5\u53ca\u5176\u91cd\u8981\u6027\uff0c\u5e76\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u8bf4\u660e\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n

    \n
  1. \u524d\u7f00\u7d22\u5f15\u7684\u6982\u5ff5<\/li>\n<\/ol>\n

    \u524d\u7f00\u7d22\u5f15\u662f\u4e00\u79cd\u7d22\u5f15\u65b9\u5f0f\uff0c\u5b83\u53ea\u7d22\u5f15\u5217\u503c\u7684\u4e00\u90e8\u5206\u800c\u4e0d\u662f\u6574\u4e2a\u5217\u503c\u3002\u901a\u8fc7\u53ea\u7d22\u5f15\u5217\u503c\u7684\u524d\u51e0\u4e2a\u5b57\u7b26\uff0c\u524d\u7f00\u7d22\u5f15\u53ef\u4ee5\u8282\u7701\u7d22\u5f15\u7a7a\u95f4\uff0c\u5e76\u63d0\u9ad8\u67e5\u8be2\u6027\u80fd\u3002\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u5bf9\u4e8e\u5927\u5b57\u6bb5\u6216\u8005\u5b57\u6bb5\u5185\u5bb9\u8f83\u957f\u7684\u5217\uff0c\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u53ef\u4ee5\u663e\u8457\u51cf\u5c11\u7d22\u5f15\u7684\u5927\u5c0f\uff0c\u52a0\u5feb\u67e5\u8be2\u901f\u5ea6\u3002<\/p>\n

      \n
    1. \u524d\u7f00\u7d22\u5f15\u7684\u91cd\u8981\u6027<\/li>\n<\/ol>\n

      2.1 \u8282\u7701\u5b58\u50a8\u7a7a\u95f4<\/p>\n

      \u5728\u521b\u5efa\u7d22\u5f15\u65f6\uff0c\u7d22\u5f15\u7684\u5927\u5c0f\u5bf9\u4e8e\u6570\u636e\u5e93\u7684\u6027\u80fd\u548c\u5b58\u50a8\u7a7a\u95f4\u5360\u7528\u90fd\u6709\u7740\u76f4\u63a5\u7684\u5f71\u54cd\u3002\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u53ef\u4ee5\u5927\u5927\u51cf\u5c11\u7d22\u5f15\u7684\u5927\u5c0f\uff0c\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\u3002\u5c24\u5176\u662f\u5728\u5bf9\u4e8e\u6587\u672c\u5b57\u6bb5\u6216\u8005\u8f83\u957f\u5b57\u6bb5\u8fdb\u884c\u7d22\u5f15\u65f6\uff0c\u524d\u7f00\u7d22\u5f15\u7684\u4f5c\u7528\u5c24\u4e3a\u663e\u8457\u3002<\/p>\n

      2.2 \u63d0\u9ad8\u67e5\u8be2\u6027\u80fd<\/p>\n

      \u901a\u8fc7\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\uff0c\u6570\u636e\u5e93\u5f15\u64ce\u5728\u6267\u884c\u67e5\u8be2\u65f6\u53ea\u9700\u8003\u8651\u7d22\u5f15\u5217\u7684\u90e8\u5206\u503c\uff0c\u800c\u4e0d\u662f\u6574\u4e2a\u5217\u503c\u3002\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u7d22\u5f15\u7684\u6bd4\u8f83\u64cd\u4f5c\uff0c\u52a0\u5feb\u67e5\u8be2\u901f\u5ea6\u3002\u5c24\u5176\u662f\u5728\u5bf9\u4e8e\u5b57\u7b26\u5b57\u6bb5\u8fdb\u884c\u6a21\u7cca\u67e5\u8be2\u65f6\uff0c\u524d\u7f00\u7d22\u5f15\u53ef\u4ee5\u5e26\u6765\u660e\u663e\u7684\u6027\u80fd\u63d0\u5347\u3002<\/p>\n

        \n
      1. \u5177\u4f53\u4ee3\u7801\u793a\u4f8b<\/li>\n<\/ol>\n

        \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c06\u901a\u8fc7\u4e00\u4e2a\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6765\u6f14\u793a\u5982\u4f55\u521b\u5efa\u524d\u7f00\u7d22\u5f15\u5e76\u4f7f\u7528\u5b83\u52a0\u901f\u67e5\u8be2\uff1a<\/p>\n

        \u5047\u8bbe\u6709\u4e00\u4e2a\u540d\u4e3ausers<\/code>\u7684\u8868\uff0c\u5176\u4e2d\u5305\u542bid<\/code>\uff08\u4e3b\u952e\uff09\u3001username<\/code>\u548cemail<\/code>\u5b57\u6bb5\u3002\u6211\u4eec\u5e0c\u671b\u5bf9email<\/code>\u5b57\u6bb5\u521b\u5efa\u524d\u7f00\u7d22\u5f15\u6765\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n

        \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u524d\u7f00\u957f\u5ea6\u4e3a10\u7684\u524d\u7f00\u7d22\u5f15\uff1a<\/p>\n

        CREATE INDEX idx_email_prefix ON users(email(10));<\/pre>\n
        \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u53ef\u4ee5\u7f16\u5199\u4e00\u4e2a\u67e5\u8be2\u8bed\u53e5\uff0c\u4f7f\u7528\u521b\u5efa\u597d\u7684\u524d\u7f00\u7d22\u5f15\u8fdb\u884c\u67e5\u8be2\uff1a<\/p>\n
        SELECT * FROM users WHERE email LIKE 'example@%';<\/pre>\n
        \u901a\u8fc7\u4ee5\u4e0a\u64cd\u4f5c\uff0c\u6211\u4eec\u6210\u529f\u521b\u5efa\u4e86\u4e00\u4e2a\u524d\u7f00\u7d22\u5f15\u5e76\u5728\u67e5\u8be2\u4e2d\u4f7f\u7528\u4e86\u8be5\u7d22\u5f15\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u67e5\u8be2\u6027\u80fd\u3002<\/p>\n
          \n
        1. \u603b\u7ed3<\/li>\n<\/ol>\n
          \u901a\u8fc7\u5b66\u4e60\u4e86\u89e3MySQL\u524d\u7f00\u7d22\u5f15\u7684\u6982\u5ff5\u548c\u91cd\u8981\u6027\uff0c\u5e76\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u6f14\u793a\u4e86\u5982\u4f55\u521b\u5efa\u548c\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\uff0c\u6211\u4eec\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u524d\u7f00\u7d22\u5f15\u5728\u6570\u636e\u5e93\u4e2d\u7684\u4f5c\u7528\u548c\u4f18\u52bf\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5408\u7406\u4f7f\u7528\u524d\u7f00\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u6570\u636e\u5e93\u7684\u67e5\u8be2\u6548\u7387\uff0c\u4f18\u5316\u7cfb\u7edf\u6027\u80fd\uff0c\u662f\u6570\u636e\u5e93\u4f18\u5316\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u624b\u6bb5\u3002<\/p>\n
          \u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\u4e3b\u673a\u5b9d\u8d1d\uff01\u66f4\u591a\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u4e3b\u673a\u5b9d\u8d1d\u516c\u4f17\u53f7\u3002<\/p>\n
          \n
          \n <\/dt>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
          \u8ba4\u8bc6MySQL\u7d22\u5f15\u524d\u7f00\u7684\u5173\u952e\u6027 ...<\/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-200018","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200018","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=200018"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/200018\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=200018"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=200018"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=200018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}