{"id":66693,"date":"2024-10-14T19:49:18","date_gmt":"2024-10-14T11:49:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/66693\/"},"modified":"2024-10-14T19:49:18","modified_gmt":"2024-10-14T11:49:18","slug":"mysql-%e9%8c%af%e8%aa%a4%e8%99%9f%ef%bc%9a3667%ef%bc%9b%e7%ac%a6%e8%99%9f%ef%bc%9aer_tf_must_have_alias%ef%bc%9bsqlstate%ef%bc%9a42000-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9-%e9%81%a0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/66693\/","title":{"rendered":"MySQL \u932f\u8aa4\u865f\uff1a3667\uff1b\u7b26\u865f\uff1aER_TF_MUST_HAVE_ALIAS\uff1bSQLSTATE\uff1a42000 \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406"},"content":{"rendered":"<h1 id=\"mysql-%e9%8c%af%e8%aa%a4%e8%99%9f%ef%bc%9a3667%ef%bc%9b%e7%ac%a6%e8%99%9f%ef%bc%9aer_tf_must_have_alias%ef%bc%9bsqlstate%ef%bc%9a42000-%e5%a0%b1%e9%8c%af-%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9-%e9%81%a0-wNdtXAXgXM\">MySQL \u932f\u8aa4\u865f\uff1a3667\uff1b\u7b26\u865f\uff1aER_TF_MUST_HAVE_ALIAS\uff1bSQLSTATE\uff1a42000 \u5831\u932f \u6545\u969c\u4fee\u5fa9 \u9060\u7a0b\u8655\u7406<\/h1>\n<p>\u5728\u4f7f\u7528 MySQL \u6578\u64da\u5eab\u6642\uff0c\u958b\u767c\u8005\u53ef\u80fd\u6703\u9047\u5230\u5404\u7a2e\u932f\u8aa4\uff0c\u5176\u4e2d\u4e4b\u4e00\u4fbf\u662f\u932f\u8aa4\u865f 3667\uff0c\u7b26\u865f ER_TF_MUST_HAVE_ALIAS\uff0cSQLSTATE 42000\u3002\u9019\u500b\u932f\u8aa4\u901a\u5e38\u51fa\u73fe\u5728\u67e5\u8a62\u4e2d\uff0c\u7576\u4f7f\u7528\u8005\u672a\u70ba\u67d0\u4e9b\u8868\u6216\u5b50\u67e5\u8a62\u6307\u5b9a\u5225\u540d\u6642\uff0cMySQL \u6703\u5831\u544a\u6b64\u932f\u8aa4\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u8a72\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-wNdtXAXgXM\">\u932f\u8aa4\u539f\u56e0<\/h2>\n<p>MySQL \u932f\u8aa4 3667 \u7684\u4e3b\u8981\u539f\u56e0\u662f SQL \u67e5\u8a62\u4e2d\u7f3a\u5c11\u5225\u540d\u3002\u7576\u4f60\u5728\u67e5\u8a62\u4e2d\u4f7f\u7528\u4e86\u8868\u6216\u5b50\u67e5\u8a62\uff0c\u4f46\u6c92\u6709\u70ba\u5176\u6307\u5b9a\u5225\u540d\u6642\uff0cMySQL \u6703\u7121\u6cd5\u8b58\u5225\u8a72\u8868\u6216\u5b50\u67e5\u8a62\uff0c\u5f9e\u800c\u5c0e\u81f4\u932f\u8aa4\u7684\u767c\u751f\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u8003\u616e\u4ee5\u4e0b SQL \u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT * FROM (SELECT id, name FROM users) WHERE id = 1;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u5167\u90e8\u7684\u5b50\u67e5\u8a62\u6c92\u6709\u6307\u5b9a\u5225\u540d\uff0c\u9019\u6703\u5c0e\u81f4 MySQL \u5831\u932f\u3002\u6b63\u78ba\u7684\u5beb\u6cd5\u61c9\u8a72\u662f\uff1a<\/p>\n<pre><code>SELECT * FROM (SELECT id, name FROM users) AS user_data WHERE id = 1;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u6211\u5011\u70ba\u5b50\u67e5\u8a62\u6307\u5b9a\u4e86\u5225\u540d user_data\uff0c\u9019\u6a23 MySQL \u5c31\u80fd\u6b63\u78ba\u8b58\u5225\u8a72\u67e5\u8a62\u3002<\/p>\n<h2 id=\"%e6%95%85%e9%9a%9c%e4%bf%ae%e5%be%a9%e6%ad%a5%e9%a9%9f-wNdtXAXgXM\">\u6545\u969c\u4fee\u5fa9\u6b65\u9a5f<\/h2>\n<p>\u8981\u4fee\u5fa9 MySQL \u932f\u8aa4 3667\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li><strong>\u6aa2\u67e5 SQL \u67e5\u8a62\uff1a<\/strong>\u4ed4\u7d30\u6aa2\u67e5\u4f60\u7684 SQL \u67e5\u8a62\uff0c\u78ba\u4fdd\u6240\u6709\u7684\u8868\u548c\u5b50\u67e5\u8a62\u90fd\u6709\u6307\u5b9a\u7684\u5225\u540d\u3002<\/li>\n<li><strong>\u4f7f\u7528\u5225\u540d\uff1a<\/strong>\u5728\u4f7f\u7528\u5b50\u67e5\u8a62\u6216\u806f\u63a5\u6642\uff0c\u52d9\u5fc5\u70ba\u5176\u6307\u5b9a\u5225\u540d\uff0c\u4ee5\u907f\u514d\u6b64\u985e\u932f\u8aa4\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u67e5\u8a62\uff1a<\/strong>\u5728\u4fee\u6539\u67e5\u8a62\u5f8c\uff0c\u9032\u884c\u6e2c\u8a66\u4ee5\u78ba\u4fdd\u932f\u8aa4\u5df2\u88ab\u4fee\u5fa9\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%81%a0%e7%a8%8b%e8%99%95%e7%90%86%e5%bb%ba%e8%ad%b0-wNdtXAXgXM\">\u9060\u7a0b\u8655\u7406\u5efa\u8b70<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u958b\u767c\u8005\u53ef\u80fd\u7121\u6cd5\u76f4\u63a5\u8a2a\u554f\u6578\u64da\u5eab\uff0c\u9019\u6642\u53ef\u4ee5\u8003\u616e\u9060\u7a0b\u8655\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u9060\u7a0b\u684c\u9762\u5de5\u5177\uff1a<\/strong>\u5982\u679c\u4f60\u6709\u6b0a\u9650\uff0c\u53ef\u4ee5\u4f7f\u7528\u9060\u7a0b\u684c\u9762\u5de5\u5177\u9023\u63a5\u5230\u6578\u64da\u5eab\u6240\u5728\u7684\u4f3a\u670d\u5668\uff0c\u7136\u5f8c\u9032\u884c\u67e5\u8a62\u7684\u4fee\u6539\u3002<\/li>\n<li><strong>\u901a\u904e SSH \u9023\u63a5\uff1a<\/strong>\u5982\u679c\u4f3a\u670d\u5668\u652f\u6301 SSH\uff0c\u5247\u53ef\u4ee5\u901a\u904e SSH \u9023\u63a5\u5230\u4f3a\u670d\u5668\uff0c\u4e26\u4f7f\u7528\u547d\u4ee4\u884c\u5de5\u5177\u57f7\u884c SQL \u67e5\u8a62\u3002<\/li>\n<li><strong>\u4f7f\u7528\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\uff1a<\/strong>\u8a31\u591a\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\uff08\u5982 phpMyAdmin \u6216 MySQL Workbench\uff09\u652f\u6301\u9060\u7a0b\u9023\u63a5\uff0c\u53ef\u4ee5\u7528\u4f86\u4fee\u6539\u548c\u6e2c\u8a66 SQL \u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wNdtXAXgXM\">\u7e3d\u7d50<\/h2>\n<p>MySQL \u932f\u8aa4\u865f 3667 \u662f\u4e00\u500b\u5e38\u898b\u7684\u932f\u8aa4\uff0c\u901a\u5e38\u7531\u65bc\u7f3a\u5c11\u5225\u540d\u800c\u5f15\u8d77\u3002\u901a\u904e\u4ed4\u7d30\u6aa2\u67e5 SQL \u67e5\u8a62\u4e26\u70ba\u6240\u6709\u8868\u548c\u5b50\u67e5\u8a62\u6307\u5b9a\u5225\u540d\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u6b64\u554f\u984c\u3002\u5728\u9032\u884c\u6545\u969c\u4fee\u5fa9\u6642\uff0c\u958b\u767c\u8005\u9084\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u9060\u7a0b\u8655\u7406\u7684\u65b9\u6cd5\u4f86\u8a2a\u554f\u6578\u64da\u5eab\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u6216 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7a MySQL \u932f\u8aa4\u865f 3667 (ER_TF_MUST_HAVE_ALIAS) \u7684\u6545\u969c\uff0c\u63d0\u4f9b\u9060\u7a0b\u8655\u7406\u65b9\u6848\uff0c\u78ba\u4fdd SQL \u67e5\u8a62\u6b63\u78ba\u57f7\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-66693","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66693","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=66693"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66693\/revisions"}],"predecessor-version":[{"id":66694,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/66693\/revisions\/66694"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=66693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=66693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=66693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}