{"id":168023,"date":"2024-11-06T08:52:30","date_gmt":"2024-11-06T00:52:30","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168023\/"},"modified":"2024-11-06T08:52:30","modified_gmt":"2024-11-06T00:52:30","slug":"%e8%81%8a%e8%81%8a%e7%b4%a2%e5%bc%95%e5%a4%b1%e6%95%88%e7%9a%84%e7%b6%93%e5%85%b8%e5%a0%b4%e6%99%af","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168023\/","title":{"rendered":"\u804a\u804a\u7d22\u5f15\u5931\u6548\u7684\u7d93\u5178\u5834\u666f"},"content":{"rendered":"<h1 id=\"%e8%81%8a%e8%81%8a%e7%b4%a2%e5%bc%95%e5%a4%b1%e6%95%88%e7%9a%84%e7%b6%93%e5%85%b8%e5%a0%b4%e6%99%af-imKLqpdfyi\">\u804a\u804a\u7d22\u5f15\u5931\u6548\u7684\u7d93\u5178\u5834\u666f<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7d22\u5f15\u662f\u4e00\u7a2e\u7528\u65bc\u52a0\u901f\u67e5\u8a62\u7684\u6578\u64da\u7d50\u69cb\u3002\u96d6\u7136\u7d22\u5f15\u80fd\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u7d22\u5f15\u53ef\u80fd\u6703\u5931\u6548\uff0c\u5c0e\u81f4\u67e5\u8a62\u6027\u80fd\u4e0b\u964d\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u7d22\u5f15\u5931\u6548\u7684\u7d93\u5178\u5834\u666f\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u907f\u514d\u9019\u4e9b\u554f\u984c\u3002<\/p>\n<h2 id=\"1-%e4%bd%bf%e7%94%a8%e4%b8%8d%e7%95%b6%e7%9a%84%e6%9f%a5%e8%a9%a2%e6%a2%9d%e4%bb%b6-imKLqpdfyi\">1. \u4f7f\u7528\u4e0d\u7576\u7684\u67e5\u8a62\u689d\u4ef6<\/h2>\n<p>\u7d22\u5f15\u7684\u8a2d\u8a08\u662f\u57fa\u65bc\u7279\u5b9a\u7684\u67e5\u8a62\u6a21\u5f0f\u3002\u5982\u679c\u67e5\u8a62\u689d\u4ef6\u8207\u7d22\u5f15\u4e0d\u5339\u914d\uff0c\u5247\u53ef\u80fd\u5c0e\u81f4\u7d22\u5f15\u5931\u6548\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6709\u4e00\u500b\u91dd\u5c0d\u300c\u7528\u6236\u540d\u300d\u6b04\u4f4d\u7684\u7d22\u5f15\uff0c\u4f46\u67e5\u8a62\u6642\u4f7f\u7528\u4e86\u300cLIKE\u300d\u904b\u7b97\u7b26\uff0c\u4e14\u524d\u9762\u6709\u901a\u914d\u7b26\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE username LIKE '%admin%';\n<\/code><\/pre>\n<p>\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u8cc7\u6599\u5eab\u7121\u6cd5\u4f7f\u7528\u7d22\u5f15\uff0c\u56e0\u70ba\u901a\u914d\u7b26\u5728\u524d\u9762\u6703\u5c0e\u81f4\u5168\u8868\u6383\u63cf\u3002<\/p>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8%e5%87%bd%e6%95%b8%e6%88%96%e8%a1%a8%e9%81%94%e5%bc%8f-imKLqpdfyi\">2. \u4f7f\u7528\u51fd\u6578\u6216\u8868\u9054\u5f0f<\/h2>\n<p>\u7576\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u51fd\u6578\u6216\u8868\u9054\u5f0f\u6642\uff0c\u7d22\u5f15\u4e5f\u53ef\u80fd\u5931\u6548\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u5c07\u300ccreated_at\u300d\u6b04\u4f4d\u7684\u503c\u8f49\u63db\u70ba\u65e5\u671f\uff1a<\/p>\n<pre><code>SELECT * FROM orders WHERE DATE(created_at) = '2023-01-01';\n<\/code><\/pre>\n<p>\u7531\u65bc\u4f7f\u7528\u4e86\u51fd\u6578\uff0c\u8cc7\u6599\u5eab\u7121\u6cd5\u5229\u7528\u300ccreated_at\u300d\u6b04\u4f4d\u4e0a\u7684\u7d22\u5f15\uff0c\u9019\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002<\/p>\n<h2 id=\"3-%e4%b8%8d%e9%81%a9%e7%95%b6%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%af%94%e8%bc%83-imKLqpdfyi\">3. \u4e0d\u9069\u7576\u7684\u6578\u64da\u985e\u578b\u6bd4\u8f03<\/h2>\n<p>\u5728\u9032\u884c\u67e5\u8a62\u6642\uff0c\u5982\u679c\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\uff0c\u4e5f\u6703\u5c0e\u81f4\u7d22\u5f15\u5931\u6548\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u300cage\u300d\u6b04\u4f4d\u662f\u6574\u6578\u985e\u578b\uff0c\u4f46\u67e5\u8a62\u6642\u4f7f\u7528\u4e86\u5b57\u7b26\u4e32\u985e\u578b\u7684\u6bd4\u8f03\uff1a<\/p>\n<pre><code>SELECT * FROM users WHERE age = '30';\n<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u6703\u5c0e\u81f4\u8cc7\u6599\u5eab\u9032\u884c\u985e\u578b\u8f49\u63db\uff0c\u5f9e\u800c\u7121\u6cd5\u4f7f\u7528\u7d22\u5f15\u3002<\/p>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8or%e9%81%8b%e7%ae%97%e7%ac%a6-imKLqpdfyi\">4. \u4f7f\u7528OR\u904b\u7b97\u7b26<\/h2>\n<p>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u300cOR\u300d\u904b\u7b97\u7b26\u6642\uff0c\u7d22\u5f15\u7684\u4f7f\u7528\u6548\u7387\u6703\u964d\u4f4e\u3002\u5047\u8a2d\u6709\u4e00\u500b\u91dd\u5c0d\u300cstatus\u300d\u6b04\u4f4d\u7684\u7d22\u5f15\uff0c\u4f46\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u300cOR\u300d\uff1a<\/p>\n<pre><code>SELECT * FROM orders WHERE status = 'shipped' OR status = 'pending';\n<\/code><\/pre>\n<p>\u5728\u9019\u7a2e\u60c5\u6cc1\u4e0b\uff0c\u8cc7\u6599\u5eab\u53ef\u80fd\u7121\u6cd5\u6709\u6548\u5229\u7528\u7d22\u5f15\uff0c\u56e0\u70ba\u5b83\u9700\u8981\u6aa2\u67e5\u591a\u500b\u689d\u4ef6\u3002<\/p>\n<h2 id=\"5-%e5%a4%a7%e9%87%8f%e7%9a%84%e6%95%b8%e6%93%9a%e6%9b%b4%e6%96%b0%e6%88%96%e5%88%aa%e9%99%a4-imKLqpdfyi\">5. \u5927\u91cf\u7684\u6578\u64da\u66f4\u65b0\u6216\u522a\u9664<\/h2>\n<p>\u7576\u8868\u4e2d\u7684\u6578\u64da\u7d93\u5e38\u66f4\u65b0\u6216\u522a\u9664\u6642\uff0c\u7d22\u5f15\u7684\u6027\u80fd\u4e5f\u6703\u53d7\u5230\u5f71\u97ff\u3002\u7d22\u5f15\u9700\u8981\u96a8\u8457\u6578\u64da\u7684\u8b8a\u5316\u800c\u66f4\u65b0\uff0c\u9019\u6703\u589e\u52a0\u984d\u5916\u7684\u958b\u92b7\u3002\u5982\u679c\u66f4\u65b0\u6216\u522a\u9664\u7684\u64cd\u4f5c\u983b\u7e41\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u7d22\u5f15\u8b8a\u5f97\u4e0d\u518d\u9ad8\u6548\u3002<\/p>\n<h2 id=\"6-%e4%bd%bf%e7%94%a8%e4%b8%8d%e9%81%a9%e5%90%88%e7%9a%84%e7%b4%a2%e5%bc%95%e9%a1%9e%e5%9e%8b-imKLqpdfyi\">6. \u4f7f\u7528\u4e0d\u9069\u5408\u7684\u7d22\u5f15\u985e\u578b<\/h2>\n<p>\u4e0d\u540c\u7684\u67e5\u8a62\u9700\u6c42\u9700\u8981\u4e0d\u540c\u985e\u578b\u7684\u7d22\u5f15\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc\u7bc4\u570d\u67e5\u8a62\uff0cB-Tree\u7d22\u5f15\u662f\u5408\u9069\u7684\uff0c\u800c\u5c0d\u65bc\u5168\u6587\u641c\u7d22\uff0c\u5247\u9700\u8981\u4f7f\u7528\u5168\u6587\u7d22\u5f15\u3002\u5982\u679c\u9078\u64c7\u4e86\u4e0d\u9069\u5408\u7684\u7d22\u5f15\u985e\u578b\uff0c\u5c07\u7121\u6cd5\u6709\u6548\u5229\u7528\u7d22\u5f15\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-imKLqpdfyi\">\u7e3d\u7d50<\/h2>\n<p>\u7d22\u5f15\u5931\u6548\u662f\u8cc7\u6599\u5eab\u6027\u80fd\u512a\u5316\u4e2d\u7684\u4e00\u500b\u91cd\u8981\u554f\u984c\u3002\u4e86\u89e3\u7d22\u5f15\u5931\u6548\u7684\u7d93\u5178\u5834\u666f\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728\u8a2d\u8a08\u67e5\u8a62\u548c\u7d22\u5f15\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u9078\u64c7\u3002\u901a\u904e\u907f\u514d\u4e0d\u7576\u7684\u67e5\u8a62\u689d\u4ef6\u3001\u51fd\u6578\u4f7f\u7528\u3001\u6578\u64da\u985e\u578b\u4e0d\u5339\u914d\u7b49\u60c5\u6cc1\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u67e5\u8a62\u7684\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u548c\u914d\u7f6e\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u8a0e\u7d22\u5f15\u5931\u6548\u7684\u7d93\u5178\u5834\u666f\uff0c\u4e86\u89e3\u5176\u5c0d\u67e5\u8a62\u6027\u80fd\u7684\u5f71\u97ff\u53ca\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u5347\u6578\u64da\u5eab\u6548\u80fd\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-168023","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168023","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=168023"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168023\/revisions"}],"predecessor-version":[{"id":168024,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/168023\/revisions\/168024"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=168023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=168023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=168023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}