{"id":177165,"date":"2024-11-08T13:53:24","date_gmt":"2024-11-08T05:53:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/177165\/"},"modified":"2024-11-08T13:53:25","modified_gmt":"2024-11-08T05:53:25","slug":"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41072-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_key_column_does_not_exits%ef%bc%89%e9%8d%b5%e5%88%97%ef%bc%85s","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/177165\/","title":{"rendered":"\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41072 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_KEY_COLUMN_DOES_NOT_EXITS\uff09\u9375\u5217\u201c\uff05s\u201d\u5728\u8868\u4e2d\u4e0d\u5b58\u5728"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9mysql%e9%8c%af%e8%aa%a41072-sql%e7%8b%80%e6%85%8b%ef%bc%9a42000%ef%bc%88er_key_column_does_not_exist%ef%bc%89%e9%8d%b5%e5%88%97%ef%bc%85s-tQufyqVezR\">\u5982\u4f55\u4fee\u5fa9MySQL\u932f\u8aa41072 &#8211; SQL\u72c0\u614b\uff1a42000\uff08ER_KEY_COLUMN_DOES_NOT_EXIST\uff09\u9375\u5217\u201c\uff05s\u201d\u5728\u8868\u4e2d\u4e0d\u5b58\u5728<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u548c\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u932f\u8aa41072\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u5617\u8a66\u522a\u9664\u6216\u4fee\u6539\u4e00\u500b\u4e0d\u5b58\u5728\u7684\u9375\u5217\u6642\uff0c\u4e26\u4e14\u6703\u986f\u793a\u5982\u4e0b\u4fe1\u606f\uff1a\u201c\u9375\u5217\u2018%s\u2019\u5728\u8868\u4e2d\u4e0d\u5b58\u5728\u201d\u3002\u9019\u7bc7\u6587\u7ae0\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%a41072%e7%9a%84%e5%8e%9f%e5%9b%a0-tQufyqVezR\">\u932f\u8aa41072\u7684\u539f\u56e0<\/h2>\n<p>\u932f\u8aa41072\u7684\u4e3b\u8981\u539f\u56e0\u662fMySQL\u7121\u6cd5\u627e\u5230\u6307\u5b9a\u7684\u9375\u5217\u3002\u9019\u53ef\u80fd\u662f\u7531\u65bc\u4ee5\u4e0b\u5e7e\u500b\u539f\u56e0\u9020\u6210\u7684\uff1a<\/p>\n<ul>\n<li><strong>\u5217\u540d\u62fc\u5beb\u932f\u8aa4\uff1a<\/strong>\u5728SQL\u67e5\u8a62\u4e2d\uff0c\u5217\u540d\u53ef\u80fd\u88ab\u932f\u8aa4\u5730\u62fc\u5beb\uff0c\u5c0e\u81f4MySQL\u7121\u6cd5\u8b58\u5225\u3002<\/li>\n<li><strong>\u5217\u4e0d\u5b58\u5728\uff1a<\/strong>\u5617\u8a66\u522a\u9664\u6216\u4fee\u6539\u7684\u5217\u53ef\u80fd\u6839\u672c\u4e0d\u5b58\u5728\u65bc\u8868\u4e2d\u3002<\/li>\n<li><strong>\u8868\u7d50\u69cb\u8b8a\u66f4\uff1a<\/strong>\u5982\u679c\u5728\u57f7\u884c\u67e5\u8a62\u4e4b\u524d\u5c0d\u8868\u7d50\u69cb\u9032\u884c\u4e86\u66f4\u6539\uff08\u4f8b\u5982\uff0c\u522a\u9664\u4e86\u67d0\u500b\u5217\uff09\uff0c\u5247\u6703\u5c0e\u81f4\u6b64\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4f7f\u7528\u4e86\u932f\u8aa4\u7684\u8868\u540d\uff1a<\/strong>\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u932f\u8aa4\u7684\u8868\u540d\uff0c\u5c0e\u81f4MySQL\u67e5\u627e\u932f\u8aa4\u7684\u8868\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e4%bf%ae%e5%be%a9%e9%8c%af%e8%aa%a41072-tQufyqVezR\">\u5982\u4f55\u4fee\u5fa9\u932f\u8aa41072<\/h2>\n<p>\u4fee\u5fa9MySQL\u932f\u8aa41072\u7684\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e6%aa%a2%e6%9f%a5%e5%88%97%e5%90%8d-tQufyqVezR\">1. \u6aa2\u67e5\u5217\u540d<\/h3>\n<p>\u9996\u5148\uff0c\u6aa2\u67e5SQL\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u5217\u540d\u662f\u5426\u6b63\u78ba\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u67e5\u770b\u8868\u7684\u7d50\u69cb\uff1a<\/p>\n<pre><code>DESCRIBE your_table_name;<\/code><\/pre>\n<p>\u9019\u5c07\u986f\u793a\u8868\u4e2d\u6240\u6709\u5217\u7684\u540d\u7a31\u53ca\u5176\u5c6c\u6027\u3002\u78ba\u4fdd\u60a8\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u5217\u540d\u8207\u6b64\u5217\u8868\u4e2d\u7684\u540d\u7a31\u5b8c\u5168\u4e00\u81f4\u3002<\/p>\n<h3 id=\"2-%e7%a2%ba%e8%aa%8d%e5%88%97%e7%9a%84%e5%ad%98%e5%9c%a8%e6%80%a7-tQufyqVezR\">2. \u78ba\u8a8d\u5217\u7684\u5b58\u5728\u6027<\/h3>\n<p>\u5982\u679c\u60a8\u78ba\u5b9a\u5217\u540d\u6b63\u78ba\uff0c\u5247\u9700\u8981\u78ba\u8a8d\u8a72\u5217\u662f\u5426\u5b58\u5728\u65bc\u8868\u4e2d\u3002\u5982\u679c\u8a72\u5217\u5df2\u88ab\u522a\u9664\u6216\u5f9e\u672a\u5b58\u5728\u904e\uff0c\u5247\u9700\u8981\u91cd\u65b0\u8003\u616e\u60a8\u7684\u67e5\u8a62\u908f\u8f2f\u3002<\/p>\n<h3 id=\"3-%e6%aa%a2%e6%9f%a5%e8%a1%a8%e5%90%8d-tQufyqVezR\">3. \u6aa2\u67e5\u8868\u540d<\/h3>\n<p>\u78ba\u4fdd\u60a8\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u7684\u8868\u540d\u662f\u6b63\u78ba\u7684\u3002\u5982\u679c\u60a8\u6709\u591a\u500b\u76f8\u4f3c\u540d\u7a31\u7684\u8868\uff0c\u8acb\u4ed4\u7d30\u6aa2\u67e5\u4ee5\u78ba\u4fdd\u60a8\u6b63\u5728\u64cd\u4f5c\u6b63\u78ba\u7684\u8868\u3002<\/p>\n<h3 id=\"4-%e6%9b%b4%e6%96%b0%e8%a1%a8%e7%b5%90%e6%a7%8b-tQufyqVezR\">4. \u66f4\u65b0\u8868\u7d50\u69cb<\/h3>\n<p>\u5982\u679c\u60a8\u9700\u8981\u522a\u9664\u6216\u4fee\u6539\u7684\u5217\u78ba\u5be6\u5b58\u5728\uff0c\u4f46\u56e0\u70ba\u67d0\u4e9b\u539f\u56e0\u7121\u6cd5\u8b58\u5225\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u66f4\u65b0\u8868\u7d50\u69cb\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\u4f86\u6dfb\u52a0\u7f3a\u5931\u7684\u5217\uff1a<\/p>\n<pre><code>ALTER TABLE your_table_name ADD COLUMN column_name column_type;<\/code><\/pre>\n<p>\u78ba\u4fdd\u6839\u64da\u9700\u8981\u66ff\u63db\u201ccolumn_name\u201d\u548c\u201ccolumn_type\u201d\u3002<\/p>\n<h2 id=\"%e7%a4%ba%e4%be%8b-tQufyqVezR\">\u793a\u4f8b<\/h2>\n<p>\u5047\u8a2d\u60a8\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\uff0c\u4e26\u4e14\u60a8\u5617\u8a66\u522a\u9664\u4e00\u500b\u540d\u70ba\u201cage\u201d\u7684\u5217\uff0c\u4f46\u51fa\u73fe\u4e86\u932f\u8aa41072\u3002\u60a8\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9a5f\u9032\u884c\u6aa2\u67e5\uff1a<\/p>\n<pre><code>DESCRIBE users;<\/code><\/pre>\n<p>\u5982\u679c\u201cage\u201d\u5217\u4e0d\u5728\u7d50\u679c\u4e2d\uff0c\u5247\u60a8\u9700\u8981\u6aa2\u67e5\u662f\u5426\u62fc\u5beb\u932f\u8aa4\u6216\u8a72\u5217\u662f\u5426\u5df2\u88ab\u522a\u9664\u3002\u5982\u679c\u78ba\u5be6\u5b58\u5728\u62fc\u5beb\u932f\u8aa4\uff0c\u8acb\u4fee\u6b63\u5f8c\u91cd\u65b0\u57f7\u884c\u522a\u9664\u64cd\u4f5c\uff1a<\/p>\n<pre><code>ALTER TABLE users DROP COLUMN age;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-tQufyqVezR\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u932f\u8aa41072\u901a\u5e38\u662f\u7531\u65bc\u5217\u540d\u62fc\u5beb\u932f\u8aa4\u3001\u5217\u4e0d\u5b58\u5728\u6216\u8868\u7d50\u69cb\u8b8a\u66f4\u7b49\u539f\u56e0\u5f15\u8d77\u7684\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5\u5217\u540d\u548c\u8868\u540d\uff0c\u4e26\u78ba\u4fdd\u6240\u9700\u7684\u5217\u5b58\u5728\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u4fee\u5fa9\u6b64\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u7ba1\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u65b9\u6848\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\uff0c\u7279\u5225\u662f\u5728\u9999\u6e2f\u5730\u5340\u7684\u696d\u52d9\u904b\u71df\u4e2d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4fee\u5fa9MySQL\u932f\u8aa41072\u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u9375\u5217\u201c\uff05s\u201d\u5728\u8868\u4e2d\u4e0d\u5b58\u5728\u7684\u554f\u984c\uff0c\u78ba\u4fdd\u6578\u64da\u5eab\u64cd\u4f5c\u9806\u5229\u9032\u884c\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-177165","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177165","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=177165"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177165\/revisions"}],"predecessor-version":[{"id":177166,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/177165\/revisions\/177166"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=177165"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=177165"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=177165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}