{"id":175515,"date":"2024-11-08T06:31:20","date_gmt":"2024-11-07T22:31:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/175515\/"},"modified":"2024-11-08T06:31:21","modified_gmt":"2024-11-07T22:31:21","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84use%e5%91%bd%e4%bb%a4%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84use%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/175515\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u4e2d\u7684use\u547d\u4ee4\uff08\u6578\u64da\u5eab\u4e2d\u7684use\uff09"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84use%e5%91%bd%e4%bb%a4%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84use%ef%bc%89-UJneWArJZY\">\u5982\u4f55\u4f7f\u7528\u6578\u64da\u5eab\u4e2d\u7684USE\u547d\u4ee4\uff08\u6578\u64da\u5eab\u4e2d\u7684USE\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0c\u7279\u5225\u662f\u4f7f\u7528MySQL\u6216MariaDB\u7b49\u95dc\u806f\u578b\u6578\u64da\u5eab\u6642\uff0c<code>USE<\/code>\u547d\u4ee4\u662f\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u6307\u4ee4\u3002\u5b83\u7684\u4e3b\u8981\u529f\u80fd\u662f\u9078\u64c7\u8981\u64cd\u4f5c\u7684\u6578\u64da\u5eab\uff0c\u9019\u5c0d\u65bc\u9032\u884c\u6578\u64da\u67e5\u8a62\u3001\u66f4\u65b0\u6216\u5176\u4ed6\u64cd\u4f5c\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e<code>USE<\/code>\u547d\u4ee4\u7684\u7528\u6cd5\u53ca\u5176\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afuse%e5%91%bd%e4%bb%a4%ef%bc%9f-UJneWArJZY\">\u4ec0\u9ebc\u662fUSE\u547d\u4ee4\uff1f<\/h2>\n<p><code>USE<\/code>\u547d\u4ee4\u7528\u65bc\u544a\u8a34\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63a5\u4e0b\u4f86\u7684\u64cd\u4f5c\u5c07\u91dd\u5c0d\u54ea\u4e00\u500b\u7279\u5b9a\u7684\u6578\u64da\u5eab\u3002\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u4efb\u4f55SQL\u67e5\u8a62\u4e4b\u524d\uff0c\u5fc5\u9808\u5148\u9078\u64c7\u4e00\u500b\u6578\u64da\u5eab\u3002\u9019\u6a23\u53ef\u4ee5\u907f\u514d\u5728\u591a\u500b\u6578\u64da\u5eab\u4e4b\u9593\u9032\u884c\u6df7\u6dc6\uff0c\u78ba\u4fdd\u64cd\u4f5c\u7684\u6e96\u78ba\u6027\u3002<\/p>\n<h2 id=\"use%e5%91%bd%e4%bb%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-UJneWArJZY\">USE\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u4f7f\u7528<code>USE<\/code>\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>USE database_name;<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>database_name<\/code>\u662f\u60a8\u5e0c\u671b\u9078\u64c7\u7684\u6578\u64da\u5eab\u7684\u540d\u7a31\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u4e00\u500b\u540d\u70ba<code>my_database<\/code>\u7684\u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u9078\u64c7\u5b83\uff1a<\/p>\n<pre><code>USE my_database;<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8use%e5%91%bd%e4%bb%a4%e7%9a%84%e6%ad%a5%e9%a9%9f-UJneWArJZY\">\u4f7f\u7528USE\u547d\u4ee4\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e9%80%a3%e6%8e%a5%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%8d%e5%8b%99%e5%99%a8-UJneWArJZY\">1. \u9023\u63a5\u5230\u6578\u64da\u5eab\u670d\u52d9\u5668<\/h3>\n<p>\u5728\u4f7f\u7528<code>USE<\/code>\u547d\u4ee4\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u5148\u9023\u63a5\u5230\u6578\u64da\u5eab\u670d\u52d9\u5668\u3002\u9019\u901a\u5e38\u901a\u904e\u547d\u4ee4\u884c\u5de5\u5177\u6216\u6578\u64da\u5eab\u7ba1\u7406\u5de5\u5177\u4f86\u5b8c\u6210\u3002\u4f8b\u5982\uff0c\u4f7f\u7528MySQL\u547d\u4ee4\u884c\u5de5\u5177\u6642\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u9023\u63a5\u5230\u670d\u52d9\u5668\uff1a<\/p>\n<pre><code>mysql -u username -p<\/code><\/pre>\n<p>\u5728\u8f38\u5165\u7528\u6236\u540d\u548c\u5bc6\u78bc\u5f8c\uff0c\u60a8\u5c07\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\u670d\u52d9\u5668\u3002<\/p>\n<h3 id=\"2-%e6%9f%a5%e7%9c%8b%e5%8f%af%e7%94%a8%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab-UJneWArJZY\">2. \u67e5\u770b\u53ef\u7528\u7684\u6578\u64da\u5eab<\/h3>\n<p>\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u6240\u6709\u53ef\u7528\u7684\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>SHOW DATABASES;<\/code><\/pre>\n<p>\u9019\u5c07\u5217\u51fa\u6240\u6709\u53ef\u7528\u7684\u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u9078\u64c7\u5176\u4e2d\u4e00\u500b\u9032\u884c\u64cd\u4f5c\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8use%e5%91%bd%e4%bb%a4%e9%81%b8%e6%93%87%e6%95%b8%e6%93%9a%e5%ba%ab-UJneWArJZY\">3. \u4f7f\u7528USE\u547d\u4ee4\u9078\u64c7\u6578\u64da\u5eab<\/h3>\n<p>\u4e00\u65e6\u60a8\u78ba\u5b9a\u4e86\u8981\u4f7f\u7528\u7684\u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528<code>USE<\/code>\u547d\u4ee4\u4f86\u9078\u64c7\u5b83\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>USE my_database;<\/code><\/pre>\n<h3 id=\"4-%e5%9f%b7%e8%a1%8csql%e6%9f%a5%e8%a9%a2-UJneWArJZY\">4. \u57f7\u884cSQL\u67e5\u8a62<\/h3>\n<p>\u9078\u64c7\u6578\u64da\u5eab\u5f8c\uff0c\u60a8\u53ef\u4ee5\u57f7\u884c\u5404\u7a2eSQL\u67e5\u8a62\uff0c\u4f8b\u5982\u67e5\u8a62\u6578\u64da\u3001\u63d2\u5165\u6578\u64da\u6216\u66f4\u65b0\u6578\u64da\u3002\u4f8b\u5982\uff0c\u67e5\u8a62<code>users<\/code>\u8868\u4e2d\u7684\u6240\u6709\u8a18\u9304\uff1a<\/p>\n<pre><code>SELECT * FROM users;<\/code><\/pre>\n<h2 id=\"use%e5%91%bd%e4%bb%a4%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-UJneWArJZY\">USE\u547d\u4ee4\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u5eab\u540d\u7a31\u7684\u5927\u5c0f\u5beb\uff1a<\/strong>\u5728\u67d0\u4e9b\u64cd\u4f5c\u7cfb\u7d71\u4e2d\uff0c\u6578\u64da\u5eab\u540d\u7a31\u662f\u5340\u5206\u5927\u5c0f\u5beb\u7684\uff0c\u56e0\u6b64\u5728\u4f7f\u7528<code>USE<\/code>\u547d\u4ee4\u6642\uff0c\u8acb\u78ba\u4fdd\u4f7f\u7528\u6b63\u78ba\u7684\u5927\u5c0f\u5beb\u3002<\/li>\n<li><strong>\u6b0a\u9650\u554f\u984c\uff1a<\/strong>\u78ba\u4fdd\u60a8\u6709\u6b0a\u8a2a\u554f\u6240\u9078\u64c7\u7684\u6578\u64da\u5eab\u3002\u5982\u679c\u6c92\u6709\u9069\u7576\u7684\u6b0a\u9650\uff0c\u60a8\u5c07\u7121\u6cd5\u57f7\u884c\u4efb\u4f55\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u5207\u63db\u6578\u64da\u5eab\uff1a<\/strong>\u5982\u679c\u9700\u8981\u5728\u591a\u500b\u6578\u64da\u5eab\u4e4b\u9593\u5207\u63db\uff0c\u53ea\u9700\u518d\u6b21\u4f7f\u7528<code>USE<\/code>\u547d\u4ee4\u9078\u64c7\u65b0\u7684\u6578\u64da\u5eab\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-UJneWArJZY\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c<code>USE<\/code>\u547d\u4ee4\u662f\u4e00\u500b\u57fa\u672c\u800c\u91cd\u8981\u7684\u5de5\u5177\u3002\u5b83\u5e6b\u52a9\u7528\u6236\u9078\u64c7\u8981\u64cd\u4f5c\u7684\u6578\u64da\u5eab\uff0c\u5f9e\u800c\u78ba\u4fdd\u5f8c\u7e8c\u7684SQL\u67e5\u8a62\u80fd\u5920\u6b63\u78ba\u57f7\u884c\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u74b0\u5883\u9084\u662f\u751f\u7522\u74b0\u5883\u4e2d\uff0c\u6b63\u78ba\u4f7f\u7528<code>USE<\/code>\u547d\u4ee4\u90fd\u662f\u6578\u64da\u5eab\u7ba1\u7406\u7684\u57fa\u790e\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u696d\u52d9\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u7ba1\u7406\u9084\u662f\u5176\u4ed6\u61c9\u7528\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u90fd\u80fd\u63d0\u5347\u60a8\u7684\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3\u5982\u4f55\u5728\u6578\u64da\u5eab\u4e2d\u4f7f\u7528USE\u547d\u4ee4\uff0c\u5207\u63db\u6578\u64da\u5eab\u4ee5\u4fbf\u9032\u884c\u67e5\u8a62\u548c\u7ba1\u7406\u64cd\u4f5c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-175515","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175515","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=175515"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175515\/revisions"}],"predecessor-version":[{"id":175516,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/175515\/revisions\/175516"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=175515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=175515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=175515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}