{"id":179666,"date":"2024-11-09T03:47:18","date_gmt":"2024-11-08T19:47:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/179666\/"},"modified":"2024-11-09T03:47:19","modified_gmt":"2024-11-08T19:47:19","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8-oracle-%e4%b8%ad%e5%88%aa%e9%99%a4%e8%a1%a8%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%ef%bc%9f-oracle-%e5%88%aa%e6%8e%89%e8%a1%a8%e4%b8%ad%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/179666\/","title":{"rendered":"\u5982\u4f55\u5728 Oracle \u4e2d\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\uff1f (oracle \u522a\u6389\u8868\u4e2d\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e5%9c%a8-oracle-%e4%b8%ad%e5%88%aa%e9%99%a4%e8%a1%a8%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%ef%bc%9f-ovotkbOhwB\">\u5982\u4f55\u5728 Oracle \u4e2d\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\uff1f<\/h1>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u56e0\u70ba\u6578\u64da\u904e\u6642\u3001\u932f\u8aa4\uff0c\u9084\u662f\u56e0\u70ba\u9700\u8981\u91cb\u653e\u7a7a\u9593\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u5730\u522a\u9664\u6578\u64da\u662f\u6bcf\u4f4d\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5fc5\u9808\u638c\u63e1\u7684\u6280\u80fd\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5728 Oracle \u4e2d\u522a\u9664\u6578\u64da\u7684\u5e7e\u7a2e\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u76f8\u61c9\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-delete-%e8%aa%9e%e5%8f%a5-ovotkbOhwB\">\u4f7f\u7528 DELETE \u8a9e\u53e5<\/h2>\n<p>\u6700\u5e38\u898b\u7684\u522a\u9664\u6578\u64da\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 <code>DELETE<\/code> \u8a9e\u53e5\u3002\u9019\u500b\u8a9e\u53e5\u53ef\u4ee5\u522a\u9664\u8868\u4e2d\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u884c\u3002\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DELETE FROM \u8868\u540d WHERE \u689d\u4ef6;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u4e26\u4e14\u60f3\u8981\u522a\u9664\u6240\u6709\u5e74\u9f61\u5927\u65bc 60 \u6b72\u7684\u54e1\u5de5\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>DELETE FROM employees WHERE age &gt; 60;<\/code><\/pre>\n<p>\u5982\u679c\u4e0d\u52a0 <code>WHERE<\/code> \u689d\u4ef6\uff0c\u5247\u6703\u522a\u9664\u8868\u4e2d\u6240\u6709\u7684\u6578\u64da\uff0c\u9019\u4e00\u9ede\u9700\u8981\u7279\u5225\u6ce8\u610f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-truncate-%e8%aa%9e%e5%8f%a5-ovotkbOhwB\">\u4f7f\u7528 TRUNCATE \u8a9e\u53e5<\/h2>\n<p>\u5982\u679c\u9700\u8981\u522a\u9664\u8868\u4e2d\u6240\u6709\u7684\u6578\u64da\uff0c\u4f46\u4e0d\u9700\u8981\u8a18\u9304\u6bcf\u4e00\u884c\u7684\u522a\u9664\u64cd\u4f5c\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>TRUNCATE<\/code> \u8a9e\u53e5\u3002\u9019\u500b\u8a9e\u53e5\u6bd4 <code>DELETE<\/code> \u66f4\u5feb\uff0c\u56e0\u70ba\u5b83\u4e0d\u6703\u7522\u751f\u65e5\u8a8c\u8a18\u9304\u3002\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>TRUNCATE TABLE \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664 <code>employees<\/code> \u8868\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>TRUNCATE TABLE employees;<\/code><\/pre>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c<code>TRUNCATE<\/code> \u4e0d\u80fd\u8207 <code>WHERE<\/code> \u5b50\u53e5\u4e00\u8d77\u4f7f\u7528\uff0c\u4e26\u4e14\u4e00\u65e6\u57f7\u884c\uff0c\u7121\u6cd5\u6062\u5fa9\u88ab\u522a\u9664\u7684\u6578\u64da\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-drop-%e8%aa%9e%e5%8f%a5-ovotkbOhwB\">\u4f7f\u7528 DROP \u8a9e\u53e5<\/h2>\n<p>\u5982\u679c\u5e0c\u671b\u5b8c\u5168\u522a\u9664\u4e00\u500b\u8868\u53ca\u5176\u6240\u6709\u6578\u64da\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>DROP<\/code> \u8a9e\u53e5\u3002\u9019\u5c07\u522a\u9664\u6574\u500b\u8868\u7d50\u69cb\u548c\u6578\u64da\uff0c\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DROP TABLE \u8868\u540d;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u82e5\u8981\u522a\u9664 <code>employees<\/code> \u8868\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>DROP TABLE employees;<\/code><\/pre>\n<p>\u57f7\u884c\u6b64\u64cd\u4f5c\u5f8c\uff0c\u8868\u53ca\u5176\u6240\u6709\u6578\u64da\u5c07\u7121\u6cd5\u6062\u5fa9\uff0c\u56e0\u6b64\u5728\u4f7f\u7528\u6b64\u547d\u4ee4\u6642\u5fc5\u9808\u683c\u5916\u5c0f\u5fc3\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-ovotkbOhwB\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u5728\u57f7\u884c <code>DELETE<\/code> \u6216 <code>TRUNCATE<\/code> \u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u610f\u5916\u522a\u9664\u91cd\u8981\u6578\u64da\u3002<\/li>\n<li>\u4f7f\u7528 <code>DELETE<\/code> \u6642\uff0c\u8003\u616e\u5230\u6027\u80fd\u554f\u984c\uff0c\u5c0d\u65bc\u5927\u91cf\u6578\u64da\u7684\u522a\u9664\uff0c\u5efa\u8b70\u5206\u6279\u6b21\u9032\u884c\u3002<\/li>\n<li>\u5728\u4f7f\u7528 <code>TRUNCATE<\/code> \u548c <code>DROP<\/code> \u6642\uff0c\u8acb\u78ba\u4fdd\u6c92\u6709\u5176\u4ed6\u7528\u6236\u6216\u61c9\u7528\u7a0b\u5e8f\u6b63\u5728\u4f7f\u7528\u8a72\u8868\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ovotkbOhwB\">\u7e3d\u7d50<\/h2>\n<p>\u5728 Oracle \u6578\u64da\u5eab\u4e2d\uff0c\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\u53ef\u4ee5\u901a\u904e\u591a\u7a2e\u65b9\u5f0f\u5be6\u73fe\uff0c\u5305\u62ec\u4f7f\u7528 <code>DELETE<\/code>\u3001<code>TRUNCATE<\/code> \u548c <code>DROP<\/code> \u8a9e\u53e5\u3002\u6bcf\u7a2e\u65b9\u6cd5\u90fd\u6709\u5176\u7279\u5b9a\u7684\u7528\u9014\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u9078\u64c7\u5408\u9069\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u7ba1\u7406\u7684\u6548\u7387\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u80fd\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 Oracle \u4e2d\u522a\u9664\u8868\u4e2d\u7684\u6578\u64da\uff0c\u638c\u63e1\u4f7f\u7528 DELETE \u8a9e\u53e5\u548c\u5176\u4ed6\u65b9\u6cd5\u7684\u6280\u5de7\uff0c\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u5eab\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-179666","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179666","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=179666"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179666\/revisions"}],"predecessor-version":[{"id":179667,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/179666\/revisions\/179667"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=179666"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=179666"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=179666"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}