{"id":179720,"date":"2024-11-09T04:14:23","date_gmt":"2024-11-08T20:14:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179720\/"},"modified":"2024-11-09T04:14:23","modified_gmt":"2024-11-08T20:14:23","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-sql-%e4%b8%ad%e4%bd%bf%e7%94%a8-drop-%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab-statement-%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179720\/","title":{"rendered":"\u5982\u4f55\u5728 SQL \u4e2d\u4f7f\u7528 DROP \u8a9e\u53e5\u522a\u9664\u6578\u64da\u5eab (statement \u522a\u9664\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-sql-%e4%b8%ad%e4%bd%bf%e7%94%a8-drop-%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab-mmNDidKQTp\">\u5982\u4f55\u5728 SQL \u4e2d\u4f7f\u7528 DROP \u8a9e\u53e5\u522a\u9664\u6578\u64da\u5eab<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u81f3\u95dc\u91cd\u8981\u7684\u5de5\u5177\u3002\u7576\u9700\u8981\u522a\u9664\u6574\u500b\u6578\u64da\u5eab\u6642\uff0c<code>DROP<\/code> \u8a9e\u53e5\u4fbf\u662f\u6700\u5e38\u7528\u7684\u9078\u64c7\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 <code>DROP<\/code> \u8a9e\u53e5\u4f86\u522a\u9664\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-drop-%e8%aa%9e%e5%8f%a5%ef%bc%9f-mmNDidKQTp\">\u4ec0\u9ebc\u662f DROP \u8a9e\u53e5\uff1f<\/h2>\n<p><code>DROP<\/code> \u8a9e\u53e5\u662f\u4e00\u7a2e SQL \u547d\u4ee4\uff0c\u7528\u65bc\u6c38\u4e45\u522a\u9664\u6578\u64da\u5eab\u3001\u8868\u683c\u3001\u8996\u5716\u6216\u5176\u4ed6\u6578\u64da\u5eab\u5c0d\u8c61\u3002\u4f7f\u7528 <code>DROP<\/code> \u8a9e\u53e5\u6642\uff0c\u6240\u6709\u8207\u8a72\u5c0d\u8c61\u76f8\u95dc\u7684\u6578\u64da\u548c\u7d50\u69cb\u90fd\u5c07\u88ab\u522a\u9664\uff0c\u9019\u4e00\u64cd\u4f5c\u662f\u4e0d\u53ef\u9006\u7684\u3002\u56e0\u6b64\uff0c\u5728\u57f7\u884c\u6b64\u64cd\u4f5c\u4e4b\u524d\uff0c\u52d9\u5fc5\u78ba\u4fdd\u4e0d\u518d\u9700\u8981\u8a72\u6578\u64da\u5eab\u4e2d\u7684\u4efb\u4f55\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-drop-%e8%aa%9e%e5%8f%a5%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-mmNDidKQTp\">\u4f7f\u7528 DROP \u8a9e\u53e5\u522a\u9664\u6578\u64da\u5eab\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u522a\u9664\u6578\u64da\u5eab\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DROP DATABASE database_name;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>database_name<\/code> \u662f\u60a8\u5e0c\u671b\u522a\u9664\u7684\u6578\u64da\u5eab\u7684\u540d\u7a31\u3002\u8acb\u6ce8\u610f\uff0c\u57f7\u884c\u6b64\u547d\u4ee4\u9700\u8981\u76f8\u61c9\u7684\u6b0a\u9650\uff0c\u901a\u5e38\u662f\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u6216\u64c1\u6709\u8005\u7684\u6b0a\u9650\u3002<\/p>\n<h2 id=\"%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%ad%a5%e9%a9%9f-mmNDidKQTp\">\u522a\u9664\u6578\u64da\u5eab\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"1-%e7%a2%ba%e8%aa%8d%e6%95%b8%e6%93%9a%e5%ba%ab%e5%90%8d%e7%a8%b1-mmNDidKQTp\">1. \u78ba\u8a8d\u6578\u64da\u5eab\u540d\u7a31<\/h3>\n<p>\u5728\u57f7\u884c <code>DROP<\/code> \u8a9e\u53e5\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u78ba\u8a8d\u8981\u522a\u9664\u7684\u6578\u64da\u5eab\u540d\u7a31\u3002\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u67e5\u770b\u7576\u524d\u6240\u6709\u6578\u64da\u5eab\uff1a<\/p>\n<pre><code>SHOW DATABASES;<\/code><\/pre>\n<h3 id=\"2-%e7%a2%ba%e4%bf%9d%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%8d%e5%86%8d%e4%bd%bf%e7%94%a8-mmNDidKQTp\">2. \u78ba\u4fdd\u6578\u64da\u5eab\u4e0d\u518d\u4f7f\u7528<\/h3>\n<p>\u5728\u522a\u9664\u6578\u64da\u5eab\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u8a72\u6578\u64da\u5eab\u4e0d\u518d\u88ab\u4efb\u4f55\u7528\u6236\u6216\u61c9\u7528\u7a0b\u5e8f\u4f7f\u7528\u3002\u53ef\u4ee5\u901a\u904e\u6aa2\u67e5\u7576\u524d\u9023\u63a5\u7684\u7528\u6236\u4f86\u78ba\u4fdd\u9019\u4e00\u9ede\uff1a<\/p>\n<pre><code>SHOW PROCESSLIST;<\/code><\/pre>\n<h3 id=\"3-%e5%9f%b7%e8%a1%8c-drop-%e8%aa%9e%e5%8f%a5-mmNDidKQTp\">3. \u57f7\u884c DROP \u8a9e\u53e5<\/h3>\n<p>\u4e00\u65e6\u78ba\u8a8d\u6578\u64da\u5eab\u4e0d\u518d\u4f7f\u7528\uff0c\u60a8\u53ef\u4ee5\u57f7\u884c <code>DROP<\/code> \u8a9e\u53e5\u4f86\u522a\u9664\u6578\u64da\u5eab\u3002\u4f8b\u5982\uff0c\u5982\u679c\u8981\u522a\u9664\u540d\u70ba <code>test_db<\/code> \u7684\u6578\u64da\u5eab\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>DROP DATABASE test_db;<\/code><\/pre>\n<h3 id=\"4-%e9%a9%97%e8%ad%89%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b7%b2%e8%a2%ab%e5%88%aa%e9%99%a4-mmNDidKQTp\">4. \u9a57\u8b49\u6578\u64da\u5eab\u5df2\u88ab\u522a\u9664<\/h3>\n<p>\u57f7\u884c <code>DROP<\/code> \u8a9e\u53e5\u5f8c\uff0c\u60a8\u53ef\u4ee5\u518d\u6b21\u4f7f\u7528 <code>SHOW DATABASES;<\/code> \u547d\u4ee4\u4f86\u78ba\u8a8d\u8a72\u6578\u64da\u5eab\u5df2\u88ab\u6210\u529f\u522a\u9664\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-mmNDidKQTp\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u4e0d\u53ef\u9006\u6027\uff1a<\/strong>\u57f7\u884c <code>DROP<\/code> \u8a9e\u53e5\u5f8c\uff0c\u6578\u64da\u5eab\u53ca\u5176\u6240\u6709\u6578\u64da\u5c07\u7121\u6cd5\u6062\u5fa9\uff0c\u56e0\u6b64\u5728\u57f7\u884c\u4e4b\u524d\u52d9\u5fc5\u505a\u597d\u5099\u4efd\u3002<\/li>\n<li><strong>\u6b0a\u9650\u8981\u6c42\uff1a<\/strong>\u78ba\u4fdd\u60a8\u64c1\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u57f7\u884c\u6b64\u64cd\u4f5c\uff0c\u5426\u5247\u5c07\u7121\u6cd5\u6210\u529f\u522a\u9664\u6578\u64da\u5eab\u3002<\/li>\n<li><strong>\u4f9d\u8cf4\u6027\u554f\u984c\uff1a<\/strong>\u5982\u679c\u5176\u4ed6\u6578\u64da\u5eab\u5c0d\u8a72\u6578\u64da\u5eab\u6709\u4f9d\u8cf4\uff0c\u522a\u9664\u53ef\u80fd\u6703\u5c0e\u81f4\u932f\u8aa4\u6216\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-mmNDidKQTp\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528 <code>DROP<\/code> \u8a9e\u53e5\u522a\u9664\u6578\u64da\u5eab\u662f\u4e00\u500b\u7c21\u55ae\u4f46\u9700\u8981\u8b39\u614e\u64cd\u4f5c\u7684\u904e\u7a0b\u3002\u78ba\u4fdd\u5728\u57f7\u884c\u6b64\u64cd\u4f5c\u4e4b\u524d\u505a\u597d\u5145\u5206\u7684\u6e96\u5099\u548c\u78ba\u8a8d\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u640d\u5931\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u6578\u64da\u5eab\u63d0\u4f9b\u5f37\u5927\u7684\u652f\u6301\u548c\u9748\u6d3b\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 SQL \u4e2d\u4f7f\u7528 DROP \u8a9e\u53e5\u5b89\u5168\u5730\u522a\u9664\u6578\u64da\u5eab\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\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-179720","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179720","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=179720"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179720\/revisions"}],"predecessor-version":[{"id":179721,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179720\/revisions\/179721"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}