{"id":80199,"date":"2024-10-16T14:01:15","date_gmt":"2024-10-16T06:01:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/80199\/"},"modified":"2024-10-16T14:01:15","modified_gmt":"2024-10-16T06:01:15","slug":"mysql%e6%8c%87%e4%bb%a4-use%ef%bc%88%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/80199\/","title":{"rendered":"MySQL\u6307\u4ee4: USE\uff08\u4f7f\u7528\u6578\u64da\u5eab\uff09"},"content":{"rendered":"<h1 id=\"mysql%e6%8c%87%e4%bb%a4-use%ef%bc%88%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%ef%bc%89-wVXyZCBpiX\">MySQL\u6307\u4ee4: USE\uff08\u4f7f\u7528\u6578\u64da\u5eab\uff09<\/h1>\n<p>\u5728\u4f7f\u7528MySQL\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u4e86\u89e3\u5982\u4f55\u9078\u64c7\u548c\u4f7f\u7528\u6578\u64da\u5eab\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002MySQL\u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u800c\u6709\u6548\u7684\u6307\u4ee4\u2014\u2014USE\uff0c\u4f86\u5e6b\u52a9\u7528\u6236\u9078\u64c7\u8981\u64cd\u4f5c\u7684\u6578\u64da\u5eab\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eUSE\u6307\u4ee4\u7684\u529f\u80fd\u3001\u7528\u6cd5\u53ca\u5176\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"use%e6%8c%87%e4%bb%a4%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-wVXyZCBpiX\">USE\u6307\u4ee4\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>USE\u6307\u4ee4\u7684\u4e3b\u8981\u529f\u80fd\u662f\u544a\u8a34MySQL\u7cfb\u7d71\uff0c\u63a5\u4e0b\u4f86\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u5c07\u91dd\u5c0d\u6307\u5b9a\u7684\u6578\u64da\u5eab\u9032\u884c\u3002\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u4efb\u4f55\u67e5\u8a62\u6216\u6578\u64da\u64cd\u4f5c\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%e6%8c%87%e4%bb%a4%e7%9a%84%e8%aa%9e%e6%b3%95-wVXyZCBpiX\">USE\u6307\u4ee4\u7684\u8a9e\u6cd5<\/h2>\n<p>USE\u6307\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\u4f60\u5e0c\u671b\u9078\u64c7\u7684\u6578\u64da\u5eab\u540d\u7a31\u3002\u8acb\u6ce8\u610f\uff0c\u6578\u64da\u5eab\u540d\u7a31\u662f\u5340\u5206\u5927\u5c0f\u5beb\u7684\uff0c\u56e0\u6b64\u5728\u8f38\u5165\u6642\u9700\u78ba\u4fdd\u6b63\u78ba\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8use%e6%8c%87%e4%bb%a4%e7%9a%84%e7%a4%ba%e4%be%8b-wVXyZCBpiX\">\u4f7f\u7528USE\u6307\u4ee4\u7684\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528USE\u6307\u4ee4\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>USE my_database;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u7576\u57f7\u884c\u4e0a\u8ff0\u6307\u4ee4\u5f8c\uff0c\u6240\u6709\u5f8c\u7e8c\u7684SQL\u67e5\u8a62\u5c07\u91dd\u5c0d\u540d\u70ba<code>my_database<\/code>\u7684\u6578\u64da\u5eab\u9032\u884c\u3002<\/p>\n<h3 id=\"%e6%aa%a2%e6%9f%a5%e7%95%b6%e5%89%8d%e9%81%b8%e6%93%87%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab-wVXyZCBpiX\">\u6aa2\u67e5\u7576\u524d\u9078\u64c7\u7684\u6578\u64da\u5eab<\/h3>\n<p>\u5728\u4f7f\u7528USE\u6307\u4ee4\u5f8c\uff0c\u60a8\u53ef\u80fd\u60f3\u8981\u78ba\u8a8d\u7576\u524d\u9078\u64c7\u7684\u6578\u64da\u5eab\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6307\u4ee4\u4f86\u6aa2\u67e5\uff1a<\/p>\n<pre><code>SELECT DATABASE();<\/code><\/pre>\n<p>\u9019\u689d\u6307\u4ee4\u5c07\u8fd4\u56de\u7576\u524d\u9078\u64c7\u7684\u6578\u64da\u5eab\u540d\u7a31\uff0c\u5e6b\u52a9\u7528\u6236\u78ba\u8a8d\u64cd\u4f5c\u7684\u6b63\u78ba\u6027\u3002<\/p>\n<h3 id=\"%e5%88%87%e6%8f%9b%e6%95%b8%e6%93%9a%e5%ba%ab-wVXyZCBpiX\">\u5207\u63db\u6578\u64da\u5eab<\/h3>\n<p>\u5982\u679c\u9700\u8981\u5207\u63db\u5230\u53e6\u4e00\u500b\u6578\u64da\u5eab\uff0c\u53ea\u9700\u518d\u6b21\u4f7f\u7528USE\u6307\u4ee4\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>USE another_database;<\/code><\/pre>\n<p>\u9019\u6a23\uff0c\u6240\u6709\u5f8c\u7e8c\u7684\u64cd\u4f5c\u5c07\u91dd\u5c0d<code>another_database<\/code>\u9032\u884c\u3002<\/p>\n<h2 id=\"use%e6%8c%87%e4%bb%a4%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-wVXyZCBpiX\">USE\u6307\u4ee4\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u6578\u64da\u5eab\u5b58\u5728\u6027\uff1a<\/strong>\u5728\u4f7f\u7528USE\u6307\u4ee4\u4e4b\u524d\uff0c\u78ba\u4fdd\u6307\u5b9a\u7684\u6578\u64da\u5eab\u5df2\u7d93\u5b58\u5728\u3002\u5426\u5247\uff0cMySQL\u5c07\u8fd4\u56de\u932f\u8aa4\u4fe1\u606f\u3002<\/li>\n<li><strong>\u6b0a\u9650\u554f\u984c\uff1a<\/strong>\u7528\u6236\u5fc5\u9808\u64c1\u6709\u5c0d\u6307\u5b9a\u6578\u64da\u5eab\u7684\u8a2a\u554f\u6b0a\u9650\uff0c\u5426\u5247\u5c07\u7121\u6cd5\u6210\u529f\u5207\u63db\u5230\u8a72\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>\u64cd\u4f5c\u7bc4\u570d\uff1a<\/strong>USE\u6307\u4ee4\u50c5\u5f71\u97ff\u7576\u524d\u6703\u8a71\uff0c\u7576\u6703\u8a71\u7d50\u675f\u5f8c\uff0c\u9078\u64c7\u7684\u6578\u64da\u5eab\u5c07\u4e0d\u518d\u6709\u6548\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wVXyZCBpiX\">\u7e3d\u7d50<\/h2>\n<p>USE\u6307\u4ee4\u5728MySQL\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\u626e\u6f14\u8457\u91cd\u8981\u89d2\u8272\uff0c\u5e6b\u52a9\u7528\u6236\u9078\u64c7\u548c\u64cd\u4f5c\u7279\u5b9a\u7684\u6578\u64da\u5eab\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528USE\u6307\u4ee4\uff0c\u60a8\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u64cd\u4f5c\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002\u5c0d\u65bc\u9700\u8981\u7ba1\u7406\u591a\u500b\u6578\u64da\u5eab\u7684\u7528\u6236\u4f86\u8aaa\uff0c\u638c\u63e1USE\u6307\u4ee4\u7684\u7528\u6cd5\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u670d\u52d9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u6307\u4ee4USE\uff0c\u5b78\u7fd2\u5982\u4f55\u9078\u64c7\u548c\u5207\u63db\u6578\u64da\u5eab\uff0c\u4ee5\u4fbf\u6709\u6548\u7ba1\u7406\u548c\u64cd\u4f5c\u6578\u64da\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-80199","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80199","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=80199"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80199\/revisions"}],"predecessor-version":[{"id":80200,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/80199\/revisions\/80200"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=80199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=80199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=80199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}