{"id":7551,"date":"2024-11-14T10:15:28","date_gmt":"2024-11-14T02:15:28","guid":{"rendered":"https:\/\/fwq.ai\/blog\/7551\/"},"modified":"2024-11-14T10:15:28","modified_gmt":"2024-11-14T02:15:28","slug":"%e6%95%b0%e6%8d%ae%e5%ba%93%e6%8a%a5%e9%94%99er_bad_db_error-unknown-database-my_db_01-getloonwh_users%e8%af%a5%e5%a6%82%e4%bd%95%e8%a7%a3%e5%86%b3%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/7551\/","title":{"rendered":"\u6570\u636e\u5e93\u62a5\u9519\u201cER_BAD_DB_ERROR: Unknown database &#8216;my_db_01.getloonwh_users&#8217;\u201d\u8be5\u5982\u4f55\u89e3\u51b3\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173098158628542.jpg\" class=\"aligncenter\" title=\"\u6570\u636e\u5e93\u62a5\u9519\u201cER_BAD_DB_ERROR: Unknown database &#8216;my_db_01.getloonwh_users&#8217;\u201d\u8be5\u5982\u4f55\u89e3\u51b3\uff1f\u63d2\u56fe\" alt=\"\u6570\u636e\u5e93\u62a5\u9519\u201cER_BAD_DB_ERROR: Unknown database &#8216;my_db_01.getloonwh_users&#8217;\u201d\u8be5\u5982\u4f55\u89e3\u51b3\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u4f7f\u7528\u6570\u636e\u5e93\u65f6\u51fa\u73b0&#8221;er_bad_db_error&#8221;\u9519\u8bef\u7684\u89e3\u51b3\u65b9\u6cd5<\/strong><\/p>\n<p>\u5728\u4ee3\u7801\u4e2d\uff0c\u6267\u884csql\u67e5\u8be2\u65f6\u51fa\u73b0\u4e86&#8221;er_bad_db_error: unknown database &#8216;my_db_01.getloonwh_users'&#8221;\u9519\u8bef\u3002\u8fd9\u8868\u660e\u6240\u8bbf\u95ee\u7684\u6570\u636e\u5e93\u6216\u8868\u4e0d\u5b58\u5728\u3002<\/p>\n<p>\u8981\u89e3\u51b3\u6b64\u9519\u8bef\uff0c\u9700\u8981\u4ed4\u7ec6\u68c0\u67e5\u4ee3\u7801\u4e2d\u7684\u6570\u636e\u5e93\u540d\u548c\u8868\u540d\u62fc\u5199\u662f\u5426\u6b63\u786e\u3002\u540c\u65f6\uff0c\u786e\u4fdd\u5728\u8fde\u63a5\u5230\u6570\u636e\u5e93\u65f6\u5df2\u6b63\u786e\u9009\u62e9\u8981\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u3002<\/p>\n<p>\u4fee\u6539\u540e\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>\/\/ 1.\u9009\u62e9\u6570\u636e\u5e93\uff0c\u7136\u540e\u518d\u67e5\u8be2\u8868\nconst sql = 'USE my_db_01; SELECT * FROM getloonwh_users WHERE username=? &amp;&amp; usernumber=?'\n\/\/ 2. \u6267\u884c\u67e5\u8be2\uff0c\u540e\u9762\u7684\u4ee3\u7801\u4e0e\u4e4b\u524d\u76f8\u540c<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u8fd9\u6837\uff0c\u4ee3\u7801\u5c31\u53ef\u4ee5\u6b63\u786e\u9009\u62e9\u6570\u636e\u5e93\u5e76\u67e5\u8be2\u8868\uff0c\u4ece\u800c\u907f\u514d\u51fa\u73b0&#8221;er_bad_db_error&#8221;\u9519\u8bef\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u6570\u636e\u5e93\u62a5\u9519\u201cER_BAD_DB_ERROR: Unknown database &#8216;my_db_01.getloonwh_users&#8217;\u201d\u8be5\u5982\u4f55\u89e3\u51b3\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f7f\u7528\u6570\u636e\u5e93\u65f6\u51fa\u73b0&#8221;er_bad_db_error&#8221;\u9519\u8bef\u7684\u89e3\u51b3\u65b9\u6cd5 \u5728\u4ee3\u7801\u4e2d\uff0c\u6267\u884csql\u67e5\u8be2\u65f6\u51fa\u73b0\u4e86&#8221;er_bad_db_error: unknown database &#8216;my_db_01.getloonwh_users&#8217;&#8221;\u9519\u8bef\u3002\u8fd9\u8868\u660e\u6240\u8bbf\u95ee\u7684\u6570\u636e\u5e93\u6216\u8868\u4e0d\u5b58\u5728\u3002 \u8981\u89e3\u51b3\u6b64\u9519\u8bef\uff0c\u9700\u8981\u4ed4\u7ec6\u68c0\u67e5\u4ee3\u7801\u4e2d\u7684\u6570\u636e\u5e93\u540d\u548c\u8868\u540d\u62fc\u5199\u662f\u5426\u6b63\u786e\u3002\u540c\u65f6\uff0c\u786e\u4fdd\u5728\u8fde\u63a5\u5230\u6570\u636e\u5e93\u65f6\u5df2\u6b63\u786e\u9009\u62e9\u8981\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u3002 \u4fee\u6539\u540e\u7684\u4ee3\u7801\u5982\u4e0b\uff1a \/\/ 1.\u9009\u62e9\u6570\u636e\u5e93\uff0c\u7136\u540e\u518d\u67e5\u8be2\u8868 const sql = &#8216;USE my_db_01; SELECT * FROM getloonwh_users WHERE username=? &amp;&amp; usernumber=?&#8217; \/\/ 2. \u6267\u884c\u67e5\u8be2\uff0c\u540e\u9762\u7684\u4ee3\u7801\u4e0e\u4e4b\u524d\u76f8\u540c \u767b\u5f55\u540e\u590d\u5236 \u8fd9\u6837\uff0c\u4ee3\u7801\u5c31\u53ef\u4ee5\u6b63\u786e\u9009\u62e9\u6570\u636e\u5e93\u5e76\u67e5\u8be2\u8868\uff0c\u4ece\u800c\u907f\u514d\u51fa\u73b0&#8221;er_bad_db_error&#8221;\u9519\u8bef\u3002 \u4ee5\u4e0a\u5c31\u662f\u6570\u636e\u5e93\u62a5\u9519\u201cER_BAD_DB_ERROR: Unknown database &#8216;my_db_01.getloonwh_users&#8217;\u201d\u8be5\u5982\u4f55\u89e3\u51b3\uff1f\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u7f51\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-7551","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7551","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=7551"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/7551\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=7551"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=7551"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=7551"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}