{"id":177167,"date":"2024-11-08T13:54:18","date_gmt":"2024-11-08T05:54:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177167\/"},"modified":"2024-11-08T13:54:19","modified_gmt":"2024-11-08T05:54:19","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41073-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_blob_used_as_key%ef%bc%89blob%e5%88%97%ef%bc%85s%e4%b8%8d%e8%83%bd","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177167\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41073 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_BLOB_USED_AS_KEY\uff09BLOB\u5217\u201c\uff05s\u201d\u4e0d\u80fd\u7528\u65bc\u6307\u5b9a\u8868\u985e\u578b\u7684\u9375\u898f\u7bc4"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41073-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_blob_used_as_key%ef%bc%89-nARTAjnodN\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41073 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_BLOB_USED_AS_KEY\uff09<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u662f\u932f\u8aa41073\uff0c\u8a72\u932f\u8aa4\u7684SQL\u72c0\u614b\u70ba42000\uff0c\u63d0\u793a\u201cBLOB\u5217\u2018%s\u2019\u4e0d\u80fd\u7528\u65bc\u6307\u5b9a\u8868\u985e\u578b\u7684\u9375\u898f\u7bc4\u201d\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u5617\u8a66\u5c07BLOB\u985e\u578b\u7684\u5217\u7528\u4f5c\u7d22\u5f15\u6216\u4e3b\u9375\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u9019\u500b\u932f\u8aa4\u7684\u539f\u56e0\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e5%8e%9f%e5%9b%a0%e5%88%86%e6%9e%90-nARTAjnodN\">\u932f\u8aa4\u539f\u56e0\u5206\u6790<\/h2>\n<p>\u5728MySQL\u4e2d\uff0cBLOB\uff08Binary Large Object\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u5b58\u5132\u5927\u91cf\u4e8c\u9032\u5236\u6578\u64da\u7684\u6578\u64da\u985e\u578b\u3002\u7531\u65bcBLOB\u5217\u7684\u7279\u6027\uff0cMySQL\u4e0d\u5141\u8a31\u5c07\u5176\u7528\u4f5c\u7d22\u5f15\u6216\u4e3b\u9375\uff0c\u56e0\u70ba\u9019\u6703\u5f71\u97ff\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u7576\u4f60\u5617\u8a66\u5728CREATE TABLE\u6216ALTER TABLE\u8a9e\u53e5\u4e2d\u5c07BLOB\u5217\u8a2d\u7f6e\u70ba\u7d22\u5f15\u6642\uff0c\u5c31\u6703\u51fa\u73fe\u932f\u8aa41073\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b-nARTAjnodN\">\u793a\u4f8b<\/h3>\n<pre><code>CREATE TABLE example (\n    id INT PRIMARY KEY,\n    data BLOB,\n    INDEX(data)  -- \u9019\u88e1\u6703\u5c0e\u81f4\u932f\u8aa41073\n);\n<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u5617\u8a66\u5c07BLOB\u5217\u201cdata\u201d\u8a2d\u7f6e\u70ba\u7d22\u5f15\uff0c\u9019\u6703\u5c0e\u81f4\u932f\u8aa41073\u7684\u767c\u751f\u3002<\/p>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-nARTAjnodN\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u8981\u4fee\u5fa9\u9019\u500b\u932f\u8aa4\uff0c\u958b\u767c\u8005\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u7a2e\u89e3\u6c7a\u65b9\u6848\uff1a<\/p>\n<h3 id=\"1-%e6%9b%b4%e6%94%b9%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-nARTAjnodN\">1. \u66f4\u6539\u6578\u64da\u985e\u578b<\/h3>\n<p>\u5982\u679c\u53ef\u80fd\uff0c\u5c07BLOB\u5217\u66f4\u6539\u70ba\u5176\u4ed6\u6578\u64da\u985e\u578b\uff0c\u4f8b\u5982VARCHAR\u6216TEXT\uff0c\u9019\u4e9b\u985e\u578b\u53ef\u4ee5\u7528\u4f5c\u7d22\u5f15\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u932f\u8aa4\u7684\u767c\u751f\u3002<\/p>\n<pre><code>CREATE TABLE example (\n    id INT PRIMARY KEY,\n    data TEXT,  -- \u5c07BLOB\u6539\u70baTEXT\n    INDEX(data)\n);\n<\/code><\/pre>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8%e5%89%8d%e7%b6%b4%e7%b4%a2%e5%bc%95-nARTAjnodN\">2. \u4f7f\u7528\u524d\u7db4\u7d22\u5f15<\/h3>\n<p>\u5982\u679c\u5fc5\u9808\u4f7f\u7528BLOB\u985e\u578b\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u524d\u7db4\u7d22\u5f15\u3002\u9019\u610f\u5473\u8457\u53ea\u7d22\u5f15BLOB\u5217\u7684\u4e00\u90e8\u5206\uff0c\u800c\u4e0d\u662f\u6574\u500b\u5217\u3002\u9019\u6a23\u53ef\u4ee5\u5728\u4e0d\u9055\u53cdMySQL\u9650\u5236\u7684\u60c5\u6cc1\u4e0b\uff0c\u4ecd\u7136\u80fd\u5920\u5c0dBLOB\u5217\u9032\u884c\u7d22\u5f15\u3002<\/p>\n<pre><code>CREATE TABLE example (\n    id INT PRIMARY KEY,\n    data BLOB,\n    INDEX(data(255))  -- \u53ea\u7d22\u5f15\u524d255\u500b\u5b57\u7b26\n);\n<\/code><\/pre>\n<h3 id=\"3-%e8%80%83%e6%85%ae%e5%85%b6%e4%bb%96%e8%a8%ad%e8%a8%88%e6%96%b9%e6%a1%88-nARTAjnodN\">3. \u8003\u616e\u5176\u4ed6\u8a2d\u8a08\u65b9\u6848<\/h3>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u91cd\u65b0\u8003\u616e\u6578\u64da\u5eab\u7684\u8a2d\u8a08\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5c07BLOB\u6578\u64da\u5b58\u5132\u5728\u55ae\u7368\u7684\u8868\u4e2d\uff0c\u4e26\u4f7f\u7528\u5916\u9375\u95dc\u806f\u5230\u4e3b\u8868\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5c07BLOB\u5217\u7528\u4f5c\u7d22\u5f15\u7684\u554f\u984c\u3002<\/p>\n<pre><code>CREATE TABLE main_table (\n    id INT PRIMARY KEY,\n    name VARCHAR(100)\n);\n\nCREATE TABLE blob_table (\n    id INT PRIMARY KEY,\n    main_id INT,\n    data BLOB,\n    FOREIGN KEY (main_id) REFERENCES main_table(id)\n);\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nARTAjnodN\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41073\uff08SQL\u72c0\u614b42000\uff09\u662f\u7531\u65bc\u5617\u8a66\u5c07BLOB\u5217\u7528\u4f5c\u7d22\u5f15\u6216\u4e3b\u9375\u800c\u5f15\u8d77\u7684\u3002\u901a\u904e\u66f4\u6539\u6578\u64da\u985e\u578b\u3001\u4f7f\u7528\u524d\u7db4\u7d22\u5f15\u6216\u91cd\u65b0\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u4e86\u89e3\u9019\u4e9b\u89e3\u6c7a\u65b9\u6848\u4e0d\u50c5\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u907f\u514d\u5e38\u898b\u7684\u932f\u8aa4\uff0c\u9084\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41073\uff0c\u4e86\u89e3\u5982\u4f55\u8655\u7406BLOB\u5217\u4e0d\u80fd\u7528\u4f5c\u9375\u7684\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u8a2d\u8a08\u7b26\u5408\u898f\u7bc4\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-177167","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177167","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=177167"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177167\/revisions"}],"predecessor-version":[{"id":177168,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177167\/revisions\/177168"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177167"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177167"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177167"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}