{"id":77770,"date":"2024-10-16T11:07:19","date_gmt":"2024-10-16T03:07:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/77770\/"},"modified":"2024-10-16T11:07:19","modified_gmt":"2024-10-16T03:07:19","slug":"mysql%e6%8c%87%e4%bb%a4-binary%ef%bc%88%e5%ae%9a%e9%95%b7%e4%ba%8c%e9%80%b2%e5%88%b6%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/77770\/","title":{"rendered":"MySQL\u6307\u4ee4: BINARY\uff08\u5b9a\u9577\u4e8c\u9032\u5236\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-binary%ef%bc%88%e5%ae%9a%e9%95%b7%e4%ba%8c%e9%80%b2%e5%88%b6%ef%bc%89-WdKYqhBMFu\">MySQL\u6307\u4ee4: BINARY\uff08\u5b9a\u9577\u4e8c\u9032\u5236\uff09<\/h1>\n<p>\u5728MySQL\u4e2d\uff0cBINARY\u662f\u4e00\u7a2e\u7528\u65bc\u8655\u7406\u4e8c\u9032\u5236\u6578\u64da\u7684\u6578\u64da\u985e\u578b\u3002\u5b83\u7684\u4e3b\u8981\u7279\u9ede\u662f\u80fd\u5920\u5b58\u5132\u5b9a\u9577\u7684\u4e8c\u9032\u5236\u5b57\u7b26\u4e32\uff0c\u9019\u4f7f\u5f97\u5b83\u5728\u67d0\u4e9b\u7279\u5b9a\u7684\u61c9\u7528\u5834\u666f\u4e2d\u975e\u5e38\u6709\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eBINARY\u7684\u7279\u6027\u3001\u4f7f\u7528\u65b9\u6cd5\u4ee5\u53ca\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u793a\u4f8b\u3002<\/p>\n<h2 id=\"binary%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-WdKYqhBMFu\">BINARY\u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>BINARY\u6578\u64da\u985e\u578b\u7528\u65bc\u5b58\u5132\u5b9a\u9577\u7684\u4e8c\u9032\u5236\u6578\u64da\u3002\u8207VARCHAR\u6216CHAR\u4e0d\u540c\uff0cBINARY\u985e\u578b\u7684\u6578\u64da\u5728\u5b58\u5132\u6642\u4e0d\u6703\u9032\u884c\u5b57\u7b26\u96c6\u7684\u8f49\u63db\uff0c\u9019\u610f\u5473\u8457\u5b83\u80fd\u5920\u7cbe\u78ba\u5730\u4fdd\u5b58\u6bcf\u4e00\u500b\u5b57\u7bc0\u3002BINARY\u7684\u9577\u5ea6\u7bc4\u570d\u662f0\u5230255\u5b57\u7bc0\uff0c\u9019\u4f7f\u5f97\u5b83\u975e\u5e38\u9069\u5408\u7528\u65bc\u5b58\u5132\u5982\u5716\u50cf\u3001\u97f3\u983b\u6216\u5176\u4ed6\u4e8c\u9032\u5236\u6587\u4ef6\u3002<\/p>\n<h2 id=\"binary%e7%9a%84%e4%bd%bf%e7%94%a8%e6%96%b9%e6%b3%95-WdKYqhBMFu\">BINARY\u7684\u4f7f\u7528\u65b9\u6cd5<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u4f7f\u7528BINARY\u985e\u578b\u975e\u5e38\u7c21\u55ae\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u4e00\u500b\u5305\u542bBINARY\u5b57\u6bb5\u7684\u8868\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE binary_example (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    data BINARY(16)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70babinary_example\u7684\u8868\uff0c\u4e26\u5728\u5176\u4e2d\u5b9a\u7fa9\u4e86\u4e00\u500bBINARY(16)\u985e\u578b\u7684\u5b57\u6bb5data\uff0c\u9019\u610f\u5473\u8457\u8a72\u5b57\u6bb5\u53ef\u4ee5\u5b58\u5132\u9577\u5ea6\u70ba16\u5b57\u7bc0\u7684\u4e8c\u9032\u5236\u6578\u64da\u3002<\/p>\n<h2 id=\"%e6%8f%92%e5%85%a5%e5%92%8c%e6%9f%a5%e8%a9%a2binary%e6%95%b8%e6%93%9a-WdKYqhBMFu\">\u63d2\u5165\u548c\u67e5\u8a62BINARY\u6578\u64da<\/h2>\n<p>\u63d2\u5165BINARY\u6578\u64da\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\u5341\u516d\u9032\u5236\u8868\u793a\u6cd5\u4f86\u6307\u5b9a\u6578\u64da\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>INSERT INTO binary_example (data) VALUES (UNHEX('4D795351'));<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u63d2\u5165\u4e86\u4e00\u500b\u4e8c\u9032\u5236\u6578\u64da\uff0c\u8a72\u6578\u64da\u7684\u5341\u516d\u9032\u5236\u8868\u793a\u70ba&#8217;4D795351&#8217;\u3002\u8981\u67e5\u8a62\u9019\u4e9b\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\uff1a<\/p>\n<pre><code>SELECT HEX(data) FROM binary_example;<\/code><\/pre>\n<p>\u9019\u5c07\u8fd4\u56de\u5b58\u5132\u5728data\u5b57\u6bb5\u4e2d\u7684\u4e8c\u9032\u5236\u6578\u64da\u7684\u5341\u516d\u9032\u5236\u8868\u793a\u3002<\/p>\n<h2 id=\"binary%e8%88%87%e5%85%b6%e4%bb%96%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e7%9a%84%e6%af%94%e8%bc%83-WdKYqhBMFu\">BINARY\u8207\u5176\u4ed6\u6578\u64da\u985e\u578b\u7684\u6bd4\u8f03<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u9664\u4e86BINARY\u4e4b\u5916\uff0c\u9084\u6709\u5176\u4ed6\u5e7e\u7a2e\u6578\u64da\u985e\u578b\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\uff0c\u4f8b\u5982VARBINARY\u548cBLOB\u3002\u4ee5\u4e0b\u662f\u9019\u4e9b\u6578\u64da\u985e\u578b\u4e4b\u9593\u7684\u4e3b\u8981\u5340\u5225\uff1a<\/p>\n<ul>\n<li><strong>BINARY\uff1a<\/strong>\u5b9a\u9577\u4e8c\u9032\u5236\u6578\u64da\uff0c\u9577\u5ea6\u7bc4\u570d\u70ba0\u5230255\u5b57\u7bc0\u3002<\/li>\n<li><strong>VARBINARY\uff1a<\/strong>\u53ef\u8b8a\u9577\u4e8c\u9032\u5236\u6578\u64da\uff0c\u9577\u5ea6\u7bc4\u570d\u70ba0\u523065535\u5b57\u7bc0\u3002<\/li>\n<li><strong>BLOB\uff1a<\/strong>\u7528\u65bc\u5b58\u5132\u5927\u91cf\u4e8c\u9032\u5236\u6578\u64da\uff0c\u6700\u5927\u9577\u5ea6\u53ef\u9054\u52304GB\u3002<\/li>\n<\/ul>\n<p>\u6839\u64da\u5177\u9ad4\u7684\u61c9\u7528\u9700\u6c42\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5982\u679c\u9700\u8981\u5b58\u5132\u56fa\u5b9a\u9577\u5ea6\u7684\u4e8c\u9032\u5236\u6578\u64da\uff0cBINARY\u662f\u6700\u4f73\u9078\u64c7\uff1b\u5982\u679c\u6578\u64da\u9577\u5ea6\u4e0d\u56fa\u5b9a\uff0c\u5247\u53ef\u4ee5\u8003\u616e\u4f7f\u7528VARBINARY\u6216BLOB\u3002<\/p>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-WdKYqhBMFu\">\u5be6\u969b\u61c9\u7528\u5834\u666f<\/h2>\n<p>BINARY\u6578\u64da\u985e\u578b\u5728\u8a31\u591a\u5be6\u969b\u61c9\u7528\u4e2d\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u4f8b\u5982\uff0c\u5728\u5b58\u5132\u7528\u6236\u5bc6\u78bc\u6642\uff0c\u901a\u5e38\u6703\u5c07\u5bc6\u78bc\u9032\u884c\u54c8\u5e0c\u8655\u7406\u4e26\u4ee5\u4e8c\u9032\u5236\u5f62\u5f0f\u5b58\u5132\u3002\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u5b89\u5168\u6027\uff0c\u56e0\u70ba\u5373\u4f7f\u6578\u64da\u5eab\u88ab\u653b\u64ca\uff0c\u653b\u64ca\u8005\u4e5f\u7121\u6cd5\u8f15\u6613\u7372\u53d6\u539f\u59cb\u5bc6\u78bc\u3002<\/p>\n<p>\u6b64\u5916\uff0cBINARY\u985e\u578b\u4e5f\u5e38\u7528\u65bc\u5b58\u5132\u5716\u50cf\u6216\u97f3\u983b\u6587\u4ef6\u7684\u4e8c\u9032\u5236\u6578\u64da\uff0c\u9019\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u5728\u6578\u64da\u5eab\u4e2d\u76f4\u63a5\u7ba1\u7406\u9019\u4e9b\u5a92\u9ad4\u6587\u4ef6\uff0c\u800c\u4e0d\u9700\u8981\u5c07\u5b83\u5011\u5b58\u5132\u5728\u6587\u4ef6\u7cfb\u7d71\u4e2d\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-WdKYqhBMFu\">\u7e3d\u7d50<\/h2>\n<p>BINARY\u6578\u64da\u985e\u578b\u5728MySQL\u4e2d\u63d0\u4f9b\u4e86\u4e00\u7a2e\u6709\u6548\u7684\u65b9\u5f0f\u4f86\u5b58\u5132\u5b9a\u9577\u7684\u4e8c\u9032\u5236\u6578\u64da\u3002\u901a\u904e\u4e86\u89e3\u5176\u7279\u6027\u548c\u4f7f\u7528\u65b9\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u5728\u9069\u7576\u7684\u5834\u666f\u4e2d\u9078\u64c7\u4f7f\u7528BINARY\u4f86\u63d0\u9ad8\u6578\u64da\u7684\u5b89\u5168\u6027\u548c\u7ba1\u7406\u6548\u7387\u3002\u5982\u679c\u60a8\u5c0d\u65bcVPS\u6216\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9 <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u4e2d\u7684BINARY\u6307\u4ee4\uff0c\u5982\u4f55\u4f7f\u7528\u5b9a\u957f\u4e8c\u8fdb\u5236\u6570\u636e\u7c7b\u578b\u5b58\u50a8\u548c\u6bd4\u8f83\u5b57\u7b26\u4e32\uff0c\u63d0\u9ad8\u6570\u636e\u5e93\u6027\u80fd\u4e0e\u5b89\u5168\u6027\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-77770","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77770","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=77770"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77770\/revisions"}],"predecessor-version":[{"id":77771,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/77770\/revisions\/77771"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=77770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=77770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=77770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}