{"id":160813,"date":"2024-11-04T01:13:21","date_gmt":"2024-11-03T17:13:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160813\/"},"modified":"2024-11-04T01:13:22","modified_gmt":"2024-11-03T17:13:22","slug":"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e9%81%b8%e6%93%87%e8%b3%87%e6%96%99%e5%ba%ab%ef%bc%88mysql-use-%e8%aa%9e%e5%8f%a5%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160813\/","title":{"rendered":"\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u9078\u64c7\u8cc7\u6599\u5eab\uff08MySQL USE \u8a9e\u53e5\uff09"},"content":{"rendered":"<h1 id=\"%e8%b3%87%e6%96%99%e5%ba%ab%e6%95%99%e7%a8%8b%ef%bc%9amysql-%e9%81%b8%e6%93%87%e8%b3%87%e6%96%99%e5%ba%ab%ef%bc%88mysql-use-%e8%aa%9e%e5%8f%a5%ef%bc%89-AxEvQpqfwS\">\u8cc7\u6599\u5eab\u6559\u7a0b\uff1aMySQL \u9078\u64c7\u8cc7\u6599\u5eab\uff08MySQL USE \u8a9e\u53e5\uff09<\/h1>\n<p>\u5728\u4f7f\u7528 MySQL \u9032\u884c\u8cc7\u6599\u5eab\u7ba1\u7406\u6642\uff0c\u9078\u64c7\u6b63\u78ba\u7684\u8cc7\u6599\u5eab\u662f\u81f3\u95dc\u91cd\u8981\u7684\u4e00\u6b65\u3002MySQL \u63d0\u4f9b\u4e86\u4e00\u500b\u7c21\u55ae\u7684\u8a9e\u53e5\u4f86\u9054\u6210\u9019\u4e00\u76ee\u7684\uff0c\u5373 <code>USE<\/code> \u8a9e\u53e5\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e <code>USE<\/code> \u8a9e\u53e5\u7684\u7528\u6cd5\u53ca\u5176\u5728\u8cc7\u6599\u5eab\u64cd\u4f5c\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-mysql-use-%e8%aa%9e%e5%8f%a5%ef%bc%9f-AxEvQpqfwS\">\u4ec0\u9ebc\u662f MySQL USE \u8a9e\u53e5\uff1f<\/h2>\n<p><code>USE<\/code> \u8a9e\u53e5\u662f MySQL \u4e2d\u7528\u4f86\u9078\u64c7\u8981\u64cd\u4f5c\u7684\u8cc7\u6599\u5eab\u7684\u547d\u4ee4\u3002\u7576\u4f60\u9023\u63a5\u5230 MySQL \u4f3a\u670d\u5668\u5f8c\uff0c\u9ed8\u8a8d\u60c5\u6cc1\u4e0b\u4e26\u4e0d\u6703\u81ea\u52d5\u9078\u64c7\u4efb\u4f55\u8cc7\u6599\u5eab\u3002\u9019\u610f\u5473\u8457\u5728\u57f7\u884c\u4efb\u4f55\u67e5\u8a62\u4e4b\u524d\uff0c\u4f60\u9700\u8981\u544a\u8a34 MySQL \u4f60\u60f3\u8981\u4f7f\u7528\u54ea\u4e00\u500b\u8cc7\u6599\u5eab\u3002<\/p>\n<h2 id=\"use-%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-AxEvQpqfwS\">USE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u4f7f\u7528 <code>USE<\/code> \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>USE database_name;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>database_name<\/code> \u662f\u4f60\u60f3\u8981\u9078\u64c7\u7684\u8cc7\u6599\u5eab\u7684\u540d\u7a31\u3002\u7576\u4f60\u57f7\u884c\u9019\u500b\u8a9e\u53e5\u5f8c\uff0c\u6240\u6709\u5f8c\u7e8c\u7684 SQL \u67e5\u8a62\u90fd\u5c07\u91dd\u5c0d\u9019\u500b\u8cc7\u6599\u5eab\u9032\u884c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-AxEvQpqfwS\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u5047\u8a2d\u4f60\u6709\u4e00\u500b\u540d\u70ba <code>my_database<\/code> \u7684\u8cc7\u6599\u5eab\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u4f86\u9078\u64c7\u5b83\uff1a<\/p>\n<pre><code>USE my_database;<\/code><\/pre>\n<p>\u57f7\u884c\u9019\u500b\u547d\u4ee4\u5f8c\uff0c\u4f60\u53ef\u4ee5\u9032\u884c\u5404\u7a2e\u64cd\u4f5c\uff0c\u4f8b\u5982\u67e5\u8a62\u8cc7\u6599\u8868\u3001\u63d2\u5165\u6578\u64da\u7b49\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u67e5\u8a62\u8cc7\u6599\u8868 <code>users<\/code> \u4e2d\u7684\u6240\u6709\u8a18\u9304\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>SELECT * FROM users;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-AxEvQpqfwS\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u8cc7\u6599\u5eab\u540d\u7a31\u7684\u5927\u5c0f\u5beb\uff1a<\/strong>\u5728\u67d0\u4e9b\u4f5c\u696d\u7cfb\u7d71\u4e2d\uff0c\u8cc7\u6599\u5eab\u540d\u7a31\u662f\u5340\u5206\u5927\u5c0f\u5beb\u7684\uff0c\u56e0\u6b64\u5728\u4f7f\u7528 <code>USE<\/code> \u8a9e\u53e5\u6642\uff0c\u8acb\u78ba\u4fdd\u4f7f\u7528\u6b63\u78ba\u7684\u5927\u5c0f\u5beb\u3002<\/li>\n<li><strong>\u9078\u64c7\u8cc7\u6599\u5eab\u7684\u6b0a\u9650\uff1a<\/strong>\u78ba\u4fdd\u4f60\u6709\u6b0a\u9650\u8a2a\u554f\u6240\u9078\u64c7\u7684\u8cc7\u6599\u5eab\u3002\u5982\u679c\u6c92\u6709\u9069\u7576\u7684\u6b0a\u9650\uff0c\u5c07\u7121\u6cd5\u57f7\u884c\u4efb\u4f55\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u5207\u63db\u8cc7\u6599\u5eab\uff1a<\/strong>\u5982\u679c\u9700\u8981\u5207\u63db\u5230\u53e6\u4e00\u500b\u8cc7\u6599\u5eab\uff0c\u53ea\u9700\u518d\u6b21\u4f7f\u7528 <code>USE<\/code> \u8a9e\u53e5\u5373\u53ef\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-AxEvQpqfwS\">\u7d50\u8ad6<\/h2>\n<p>MySQL \u7684 <code>USE<\/code> \u8a9e\u53e5\u662f\u4e00\u500b\u7c21\u55ae\u800c\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5728\u591a\u500b\u8cc7\u6599\u5eab\u4e4b\u9593\u9032\u884c\u5207\u63db\u3002\u6b63\u78ba\u4f7f\u7528\u9019\u500b\u8a9e\u53e5\u53ef\u4ee5\u63d0\u9ad8\u8cc7\u6599\u5eab\u64cd\u4f5c\u7684\u6548\u7387\uff0c\u4e26\u78ba\u4fdd\u67e5\u8a62\u7684\u6e96\u78ba\u6027\u3002\u7121\u8ad6\u662f\u958b\u767c\u65b0\u61c9\u7528\u9084\u662f\u7dad\u8b77\u73fe\u6709\u7cfb\u7d71\uff0c\u638c\u63e1 <code>USE<\/code> \u8a9e\u53e5\u90fd\u662f\u6bcf\u4f4d MySQL \u4f7f\u7528\u8005\u5fc5\u5099\u7684\u6280\u80fd\u3002<\/p>\n<p>\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f\u8cc7\u6599\u5eab\u7ba1\u7406\u9084\u662f\u7db2\u7ad9\u6258\u7ba1\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u4f60\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528 MySQL \u7684 USE \u8a9e\u53e5\u9078\u64c7\u8cc7\u6599\u5eab\uff0c\u638c\u63e1\u8cc7\u6599\u5eab\u7ba1\u7406\u7684\u57fa\u790e\u6280\u5de7\uff0c\u63d0\u5347\u4f60\u7684\u8cc7\u6599\u5eab\u64cd\u4f5c\u80fd\u529b\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-160813","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160813","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=160813"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160813\/revisions"}],"predecessor-version":[{"id":160814,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160813\/revisions\/160814"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160813"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160813"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}