{"id":152205,"date":"2024-11-01T20:59:20","date_gmt":"2024-11-01T12:59:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/152205\/"},"modified":"2024-11-01T20:59:21","modified_gmt":"2024-11-01T12:59:21","slug":"%e4%b8%8d%e6%87%82%e5%b0%b1%e5%95%8f%ef%bc%9asql%e8%aa%9e%e5%8f%a5%e4%b8%adwhere%e6%a2%9d%e4%bb%b6%e5%be%8c%e5%af%ab%e4%b8%8a11%e6%98%af%e4%bb%80%e9%ba%bc%e6%84%8f%e6%80%9d","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/152205\/","title":{"rendered":"\u4e0d\u61c2\u5c31\u554f\uff1aSQL\u8a9e\u53e5\u4e2dwhere\u689d\u4ef6\u5f8c\u5beb\u4e0a1=1\u662f\u4ec0\u9ebc\u610f\u601d"},"content":{"rendered":"<h1 id=\"%e4%b8%8d%e6%87%82%e5%b0%b1%e5%95%8f%ef%bc%9asql%e8%aa%9e%e5%8f%a5%e4%b8%adwhere%e6%a2%9d%e4%bb%b6%e5%be%8c%e5%af%ab%e4%b8%8a11%e6%98%af%e4%bb%80%e9%ba%bc%e6%84%8f%e6%80%9d-OlHQrzgQwj\">\u4e0d\u61c2\u5c31\u554f\uff1aSQL\u8a9e\u53e5\u4e2dwhere\u689d\u4ef6\u5f8c\u5beb\u4e0a1=1\u662f\u4ec0\u9ebc\u610f\u601d<\/h1>\n<p>\u5728\u5b78\u7fd2SQL\u8a9e\u8a00\u7684\u904e\u7a0b\u4e2d\uff0c\u8a31\u591a\u521d\u5b78\u8005\u53ef\u80fd\u6703\u5c0d\u67d0\u4e9b\u8a9e\u53e5\u611f\u5230\u56f0\u60d1\uff0c\u7279\u5225\u662f\u7576\u770b\u5230\u5728 <code>WHERE<\/code> \u689d\u4ef6\u5f8c\u9762\u51fa\u73fe <code>1=1<\/code> \u6642\u3002\u9019\u7bc7\u6587\u7ae0\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u554f\u984c\uff0c\u5e6b\u52a9\u8b80\u8005\u7406\u89e3\u5176\u80cc\u5f8c\u7684\u610f\u7fa9\u53ca\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afsql%e7%9a%84where%e6%a2%9d%e4%bb%b6%ef%bc%9f-OlHQrzgQwj\">\u4ec0\u9ebc\u662fSQL\u7684WHERE\u689d\u4ef6\uff1f<\/h2>\n<p>\u5728SQL\u4e2d\uff0c<code>WHERE<\/code> \u5b50\u53e5\u7528\u65bc\u904e\u6ffe\u67e5\u8a62\u7d50\u679c\uff0c\u78ba\u4fdd\u53ea\u8fd4\u56de\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u6578\u64da\u3002\u4f8b\u5982\uff0c\u4ee5\u4e0b\u67e5\u8a62\u5c07\u5f9e\u540d\u70ba <code>employees<\/code> \u7684\u8868\u4e2d\u9078\u64c7\u6240\u6709\u5e74\u9f61\u5927\u65bc30\u7684\u54e1\u5de5\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE age &gt; 30;<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u80fd\u5920\u6709\u6548\u5730\u7be9\u9078\u51fa\u6240\u9700\u7684\u6578\u64da\uff0c\u4f46\u7576\u6211\u5011\u5728 <code>WHERE<\/code> \u689d\u4ef6\u4e2d\u52a0\u5165 <code>1=1<\/code> \u6642\uff0c\u60c5\u6cc1\u6703\u6709\u6240\u4e0d\u540c\u3002<\/p>\n<h2 id=\"11%e7%9a%84%e5%90%ab%e7%be%a9-OlHQrzgQwj\">1=1\u7684\u542b\u7fa9<\/h2>\n<p><code>1=1<\/code> \u662f\u4e00\u500b\u6c38\u9060\u70ba\u771f\u7684\u689d\u4ef6\uff0c\u56e0\u70ba1\u7e3d\u662f\u7b49\u65bc1\u3002\u7576\u6211\u5011\u5728 <code>WHERE<\/code> \u5b50\u53e5\u4e2d\u4f7f\u7528 <code>1=1<\/code> \u6642\uff0c\u9019\u610f\u5473\u8457\u8a72\u689d\u4ef6\u4e0d\u6703\u5c0d\u67e5\u8a62\u7d50\u679c\u9020\u6210\u4efb\u4f55\u5f71\u97ff\u3002\u9019\u6a23\u7684\u5beb\u6cd5\u901a\u5e38\u7528\u65bc\u52d5\u614b\u751f\u6210SQL\u67e5\u8a62\u6642\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u6839\u64da\u7528\u6236\u8f38\u5165\u7684\u689d\u4ef6\u4f86\u69cb\u5efa\u67e5\u8a62\u7684\u60c5\u6cc1\u4e0b\u3002<\/p>\n<h3 id=\"%e5%8b%95%e6%85%8b%e6%9f%a5%e8%a9%a2%e7%9a%84%e4%be%8b%e5%ad%90-OlHQrzgQwj\">\u52d5\u614b\u67e5\u8a62\u7684\u4f8b\u5b50<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u7528\u6236\u754c\u9762\uff0c\u5141\u8a31\u7528\u6236\u9078\u64c7\u591a\u500b\u904e\u6ffe\u689d\u4ef6\u4f86\u67e5\u8a62\u6578\u64da\u3002\u70ba\u4e86\u7c21\u5316\u67e5\u8a62\u7684\u69cb\u5efa\u904e\u7a0b\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>1=1<\/code> \u4f5c\u70ba\u57fa\u790e\u689d\u4ef6\uff0c\u7136\u5f8c\u6839\u64da\u7528\u6236\u7684\u9078\u64c7\u6dfb\u52a0\u5176\u4ed6\u689d\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>SELECT * FROM employees WHERE 1=1\nAND age &gt; 30\nAND department = 'Sales';<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>1=1<\/code> \u4f7f\u5f97\u6211\u5011\u53ef\u4ee5\u8f15\u9b06\u5730\u6dfb\u52a0\u5176\u4ed6\u689d\u4ef6\uff0c\u800c\u4e0d\u9700\u8981\u8003\u616e\u662f\u5426\u662f\u7b2c\u4e00\u500b\u689d\u4ef6\u3002\u9019\u6a23\u7684\u5beb\u6cd5\u53ef\u4ee5\u907f\u514d\u5728\u6dfb\u52a0\u7b2c\u4e00\u500b\u689d\u4ef6\u6642\u9700\u8981\u7279\u5225\u8655\u7406\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a811%e7%9a%84%e5%84%aa%e9%bb%9e-OlHQrzgQwj\">\u4f7f\u75281=1\u7684\u512a\u9ede<\/h2>\n<ul>\n<li><strong>\u7c21\u5316\u67e5\u8a62\u69cb\u5efa\uff1a<\/strong>\u4f7f\u7528 <code>1=1<\/code> \u53ef\u4ee5\u4f7f\u5f97\u52d5\u614b\u67e5\u8a62\u7684\u69cb\u5efa\u66f4\u52a0\u7c21\u55ae\uff0c\u7121\u9700\u8003\u616e\u689d\u4ef6\u7684\u6578\u91cf\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u53ef\u8b80\u6027\uff1a<\/strong>\u9019\u7a2e\u5beb\u6cd5\u4f7f\u5f97\u67e5\u8a62\u7684\u7d50\u69cb\u66f4\u52a0\u6e05\u6670\uff0c\u4fbf\u65bc\u5f8c\u7e8c\u7684\u7dad\u8b77\u548c\u4fee\u6539\u3002<\/li>\n<li><strong>\u907f\u514d\u932f\u8aa4\uff1a<\/strong>\u5728\u6dfb\u52a0\u591a\u500b\u689d\u4ef6\u6642\uff0c\u4f7f\u7528 <code>1=1<\/code> \u53ef\u4ee5\u6e1b\u5c11\u56e0\u70ba\u908f\u8f2f\u932f\u8aa4\u800c\u5c0e\u81f4\u7684\u67e5\u8a62\u5931\u6557\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-OlHQrzgQwj\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5118\u7ba1 <code>1=1<\/code> \u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5728\u5be6\u969b\u61c9\u7528\u4e2d\uff0c\u904e\u5ea6\u4f7f\u7528\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u6548\u7387\u4e0b\u964d\u3002\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u7121\u610f\u7fa9\u7684\u689d\u4ef6\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528\u6642\u61c9\u8b39\u614e\u8003\u616e\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-OlHQrzgQwj\">\u7e3d\u7d50<\/h2>\n<p>\u5728SQL\u8a9e\u53e5\u4e2d\uff0c<code>WHERE<\/code> \u689d\u4ef6\u5f8c\u5beb\u4e0a <code>1=1<\/code> \u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6280\u5de7\uff0c\u4e3b\u8981\u7528\u65bc\u7c21\u5316\u52d5\u614b\u67e5\u8a62\u7684\u69cb\u5efa\u904e\u7a0b\u3002\u9019\u7a2e\u5beb\u6cd5\u4e0d\u50c5\u63d0\u9ad8\u4e86\u67e5\u8a62\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u907f\u514d\u5728\u6dfb\u52a0\u591a\u500b\u689d\u4ef6\u6642\u51fa\u73fe\u7684\u908f\u8f2f\u932f\u8aa4\u3002\u7136\u800c\uff0c\u4f7f\u7528\u6642\u4ecd\u9700\u6ce8\u610f\u67e5\u8a62\u6027\u80fd\uff0c\u4ee5\u78ba\u4fdd\u7cfb\u7d71\u7684\u9ad8\u6548\u904b\u884c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6216\u60f3\u4e86\u89e3\u66f4\u591a\u95dc\u65bc <a href=\"https:\/\/server.hk\">\u4e91\u670d\u52a1\u5668<\/a> \u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8a73\u7d30\u8cc7\u6599\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL\u8a9e\u53e5\u4e2dWHERE\u689d\u4ef6\u5f8c\u52a0\u4e0a1=1\u7684\u542b\u7fa9\uff0c\u9019\u662f\u4e00\u7a2e\u5e38\u898b\u7684\u6280\u5de7\uff0c\u7528\u65bc\u7c21\u5316\u67e5\u8a62\u548c\u52d5\u614b\u751f\u6210\u689d\u4ef6\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-152205","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152205","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=152205"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152205\/revisions"}],"predecessor-version":[{"id":152206,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/152205\/revisions\/152206"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=152205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=152205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=152205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}