{"id":174901,"date":"2024-11-08T00:42:25","date_gmt":"2024-11-07T16:42:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/174901\/"},"modified":"2024-11-08T00:42:26","modified_gmt":"2024-11-07T16:42:26","slug":"%e5%a6%82%e4%bd%95%e5%b9%b3%e8%a1%a1sql%e4%b8%ad%e7%9a%84%e5%ae%89%e5%85%a8%e8%88%87%e6%80%a7%e8%83%bd%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/174901\/","title":{"rendered":"\u5982\u4f55\u5e73\u8861SQL\u4e2d\u7684\u5b89\u5168\u8207\u6027\u80fd\uff1f"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%b9%b3%e8%a1%a1sql%e4%b8%ad%e7%9a%84%e5%ae%89%e5%85%a8%e8%88%87%e6%80%a7%e8%83%bd%ef%bc%9f-WswVciGTCR\">\u5982\u4f55\u5e73\u8861SQL\u4e2d\u7684\u5b89\u5168\u8207\u6027\u80fd\uff1f<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u7684\u6838\u5fc3\u5de5\u5177\u3002\u7136\u800c\uff0c\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\u548c\u5b89\u5168\u5a01\u8105\u7684\u589e\u9577\uff0c\u5982\u4f55\u5728SQL\u4e2d\u5e73\u8861\u5b89\u5168\u6027\u8207\u6027\u80fd\u6210\u70ba\u4e86\u4e00\u500b\u91cd\u8981\u7684\u8ab2\u984c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5e7e\u7a2e\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u4ee5\u78ba\u4fdd\u5728\u4fdd\u8b77\u6578\u64da\u7684\u540c\u6642\uff0c\u4fdd\u6301\u826f\u597d\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e5%8f%83%e6%95%b8%e5%8c%96%e6%9f%a5%e8%a9%a2-WswVciGTCR\">1. \u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62<\/h2>\n<p>\u53c3\u6578\u5316\u67e5\u8a62\u662f\u9632\u6b62SQL\u6ce8\u5165\u653b\u64ca\u7684\u6709\u6548\u65b9\u6cd5\u3002\u9019\u7a2e\u65b9\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u5b89\u5168\u6027\uff0c\u9084\u80fd\u63d0\u5347\u6027\u80fd\uff0c\u56e0\u70ba\u6578\u64da\u5eab\u53ef\u4ee5\u91cd\u8907\u4f7f\u7528\u67e5\u8a62\u8a08\u5283\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u53c3\u6578\u5316\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username = ? AND password = ?;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u4f7f\u7528\u554f\u865f\u4f5c\u70ba\u4f54\u4f4d\u7b26\uff0c\u9019\u6a23\u53ef\u4ee5\u9632\u6b62\u60e1\u610f\u7528\u6236\u63d2\u5165\u4e0d\u5b89\u5168\u7684SQL\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"2-%e9%99%90%e5%88%b6%e6%95%b8%e6%93%9a%e5%ba%ab%e7%94%a8%e6%88%b6%e6%ac%8a%e9%99%90-WswVciGTCR\">2. \u9650\u5236\u6578\u64da\u5eab\u7528\u6236\u6b0a\u9650<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u5b89\u5168\u6027\uff0c\u61c9\u8a72\u6839\u64da\u7528\u6236\u7684\u9700\u6c42\u9650\u5236\u5176\u6578\u64da\u5eab\u6b0a\u9650\u3002\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u6f5b\u5728\u7684\u6578\u64da\u6d29\u9732\u98a8\u96aa\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u53ea\u9700\u8981\u8b80\u53d6\u6578\u64da\u7684\u7528\u6236\uff0c\u61c9\u8a72\u53ea\u6388\u4e88SELECT\u6b0a\u9650\uff0c\u800c\u4e0d\u61c9\u8a72\u6388\u4e88INSERT\u6216DELETE\u6b0a\u9650\u3002<\/p>\n<h2 id=\"3-%e4%bd%bf%e7%94%a8%e7%b4%a2%e5%bc%95%e4%be%86%e6%8f%90%e9%ab%98%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-WswVciGTCR\">3. \u4f7f\u7528\u7d22\u5f15\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8SQL\u67e5\u8a62\u6027\u80fd\u7684\u95dc\u9375\u3002\u901a\u904e\u5728\u5e38\u7528\u7684\u67e5\u8a62\u5b57\u6bb5\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u6e1b\u5c11\u67e5\u8a62\u6642\u9593\u3002\u7136\u800c\uff0c\u904e\u591a\u7684\u7d22\u5f15\u6703\u5f71\u97ff\u6578\u64da\u5beb\u5165\u7684\u6027\u80fd\uff0c\u56e0\u6b64\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u9032\u884c\u5e73\u8861\u3002<\/p>\n<pre><code>CREATE INDEX idx_username ON users(username);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u70ba\u7528\u6236\u540d\u5b57\u6bb5\u5275\u5efa\u7d22\u5f15\u53ef\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\uff0c\u4f46\u4e5f\u9700\u8981\u8003\u616e\u5230\u63d2\u5165\u548c\u66f4\u65b0\u64cd\u4f5c\u7684\u6027\u80fd\u5f71\u97ff\u3002<\/p>\n<h2 id=\"4-%e5%ae%9a%e6%9c%9f%e9%80%b2%e8%a1%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e7%b6%ad%e8%ad%b7-WswVciGTCR\">4. \u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7dad\u8b77<\/h2>\n<p>\u5b9a\u671f\u7684\u6578\u64da\u5eab\u7dad\u8b77\u53ef\u4ee5\u5e6b\u52a9\u4fdd\u6301\u6027\u80fd\u548c\u5b89\u5168\u6027\u3002\u9019\u5305\u62ec\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3001\u91cd\u5efa\u7d22\u5f15\u548c\u66f4\u65b0\u7d71\u8a08\u4fe1\u606f\u3002\u9019\u4e9b\u64cd\u4f5c\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u904b\u884c\u5728\u6700\u4f73\u72c0\u614b\uff0c\u4e26\u6e1b\u5c11\u6f5b\u5728\u7684\u5b89\u5168\u98a8\u96aa\u3002<\/p>\n<h2 id=\"5-%e5%af%a6%e6%96%bd%e5%8a%a0%e5%af%86%e6%8a%80%e8%a1%93-WswVciGTCR\">5. \u5be6\u65bd\u52a0\u5bc6\u6280\u8853<\/h2>\n<p>\u6578\u64da\u52a0\u5bc6\u662f\u4fdd\u8b77\u654f\u611f\u4fe1\u606f\u7684\u91cd\u8981\u624b\u6bb5\u3002\u7121\u8ad6\u662f\u5728\u50b3\u8f38\u904e\u7a0b\u4e2d\u9084\u662f\u5728\u975c\u614b\u5b58\u5132\u4e2d\uff0c\u52a0\u5bc6\u90fd\u80fd\u6709\u6548\u9632\u6b62\u6578\u64da\u6d29\u9732\u3002\u4f7f\u7528SSL\/TLS\u5354\u8b70\u4f86\u52a0\u5bc6\u6578\u64da\u50b3\u8f38\uff0c\u4e26\u5c0d\u5b58\u5132\u5728\u6578\u64da\u5eab\u4e2d\u7684\u654f\u611f\u4fe1\u606f\u9032\u884c\u52a0\u5bc6\uff0c\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u5b89\u5168\u6027\u3002<\/p>\n<pre><code>-- \u4f7f\u7528AES\u52a0\u5bc6\nUPDATE users SET password = AES_ENCRYPT('my_password', 'my_secret_key') WHERE username = 'user1';<\/code><\/pre>\n<h2 id=\"6-%e7%9b%a3%e6%8e%a7%e5%92%8c%e6%97%a5%e8%aa%8c%e8%a8%98%e9%8c%84-WswVciGTCR\">6. \u76e3\u63a7\u548c\u65e5\u8a8c\u8a18\u9304<\/h2>\n<p>\u5be6\u65bd\u76e3\u63a7\u548c\u65e5\u8a8c\u8a18\u9304\u53ef\u4ee5\u5e6b\u52a9\u53ca\u6642\u767c\u73fe\u6f5b\u5728\u7684\u5b89\u5168\u5a01\u8105\u3002\u901a\u904e\u5206\u6790\u65e5\u8a8c\uff0c\u53ef\u4ee5\u8b58\u5225\u7570\u5e38\u884c\u70ba\u4e26\u63a1\u53d6\u76f8\u61c9\u7684\u63aa\u65bd\u3002\u9019\u4e0d\u50c5\u6709\u52a9\u65bc\u63d0\u9ad8\u5b89\u5168\u6027\uff0c\u9084\u80fd\u5728\u6027\u80fd\u554f\u984c\u51fa\u73fe\u6642\u63d0\u4f9b\u6709\u7528\u7684\u8a3a\u65b7\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WswVciGTCR\">\u7e3d\u7d50<\/h2>\n<p>\u5728SQL\u4e2d\u5e73\u8861\u5b89\u5168\u6027\u8207\u6027\u80fd\u662f\u4e00\u9805\u6311\u6230\uff0c\u4f46\u901a\u904e\u5be6\u65bd\u53c3\u6578\u5316\u67e5\u8a62\u3001\u9650\u5236\u7528\u6236\u6b0a\u9650\u3001\u4f7f\u7528\u7d22\u5f15\u3001\u5b9a\u671f\u7dad\u8b77\u3001\u52a0\u5bc6\u6280\u8853\u4ee5\u53ca\u76e3\u63a7\u65e5\u8a8c\u8a18\u9304\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u9054\u6210\u9019\u4e00\u76ee\u6a19\u3002\u9019\u4e9b\u63aa\u65bd\u4e0d\u50c5\u80fd\u4fdd\u8b77\u6578\u64da\u7684\u5b89\u5168\uff0c\u9084\u80fd\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u5b89\u5168\u6027\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\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\u696d\u52d9\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5728SQL\u4e2d\u5e73\u8861\u5b89\u5168\u6027\u8207\u6027\u80fd\u7684\u7b56\u7565\uff0c\u78ba\u4fdd\u6578\u64da\u4fdd\u8b77\u540c\u6642\u512a\u5316\u67e5\u8a62\u6548\u7387\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-174901","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174901","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=174901"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174901\/revisions"}],"predecessor-version":[{"id":174902,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/174901\/revisions\/174902"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=174901"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=174901"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=174901"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}