{"id":20372,"date":"2024-01-02T05:05:25","date_gmt":"2024-01-02T05:05:25","guid":{"rendered":"https:\/\/server.hk\/blog\/20372\/"},"modified":"2024-11-14T10:39:36","modified_gmt":"2024-11-14T02:39:36","slug":"postgresql-command-revoke","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20372\/","title":{"rendered":"PostgreSQL \u547d\u4ee4\uff1aREVOKE"},"content":{"rendered":"<h1 id=\"postgresql-command-revoke-sjJsCjFHqc\">PostgreSQL \u547d\u4ee4\uff1aREVOKE<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u591a\u7a2e\u529f\u80fd\u548c\u5be6\u7528\u6027\u3002\u5176\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u547d\u4ee4\u662f <code>REVOKE<\/code>\uff0c\u8a72\u547d\u4ee4\u5141\u8a31\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u63a7\u5236\u6578\u64da\u5eab\u5c0d\u8c61\u7684\u8a2a\u554f\u6b0a\u9650\u3002<\/p>\n<h2 id=\"understanding-access-privileges-sjJsCjFHqc\">\u4e86\u89e3\u8a2a\u554f\u6b0a\u9650<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u8a2a\u554f\u6b0a\u9650\u6c7a\u5b9a\u8ab0\u53ef\u4ee5\u5c0d\u6578\u64da\u5eab\u5c0d\u8c61\uff08\u5982\u8868\u683c\u3001\u8996\u5716\u3001\u51fd\u6578\u548c\u6a21\u5f0f\uff09\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u3002\u9019\u4e9b\u6b0a\u9650\u53ef\u4ee5\u88ab\u6388\u4e88\u6216\u5f9e\u7528\u6236\u6216\u89d2\u8272\u4e2d\u64a4\u92b7\u3002<\/p>\n<p>\u5728 PostgreSQL \u4e2d\u6709\u5e7e\u7a2e\u5e38\u898b\u7684\u6b0a\u9650\uff1a<\/p>\n<ul>\n<li><strong>SELECT\uff1a<\/strong> \u5141\u8a31\u5f9e\u8868\u683c\u6216\u8996\u5716\u4e2d\u8b80\u53d6\u6578\u64da\u3002<\/li>\n<li><strong>INSERT\uff1a<\/strong> \u5141\u8a31\u5411\u8868\u683c\u4e2d\u63d2\u5165\u65b0\u884c\u3002<\/li>\n<li><strong>UPDATE\uff1a<\/strong> \u5141\u8a31\u4fee\u6539\u8868\u683c\u4e2d\u7684\u73fe\u6709\u884c\u3002<\/li>\n<li><strong>DELETE\uff1a<\/strong> \u5141\u8a31\u5f9e\u8868\u683c\u4e2d\u522a\u9664\u884c\u3002<\/li>\n<li><strong>USAGE\uff1a<\/strong> \u5141\u8a31\u4f7f\u7528\u67d0\u500b\u6a21\u5f0f\u6216\u8a9e\u8a00\u3002<\/li>\n<li><strong>EXECUTE\uff1a<\/strong> \u5141\u8a31\u57f7\u884c\u67d0\u500b\u51fd\u6578\u6216\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n<h2 id=\"the-revoke-command-sjJsCjFHqc\">REVOKE \u547d\u4ee4<\/h2>\n<p>PostgreSQL \u4e2d\u7684 <code>REVOKE<\/code> \u547d\u4ee4\u7528\u65bc\u64a4\u92b7\u5148\u524d\u6388\u4e88\u7684\u7528\u6236\u6216\u89d2\u8272\u7684\u6b0a\u9650\u3002<code>REVOKE<\/code> \u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>REVOKE privilege_name [(column_name [, ...])]\r\n  ON object_name\r\n  FROM {user_name | PUBLIC | role_name} [, ...]\r\n  [CASCADE | RESTRICT];\r\n<\/code><\/pre>\n<p>\u8b93\u6211\u5011\u5206\u89e3\u9019\u500b\u8a9e\u6cd5\u7684\u4e0d\u540c\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><code>privilege_name\uff1a<\/code> \u6307\u5b9a\u8981\u64a4\u92b7\u7684\u6b0a\u9650\u540d\u7a31\u3002<\/li>\n<li><code>column_name\uff1a<\/code> \u6307\u5b9a\u8981\u64a4\u92b7\u6b0a\u9650\u7684\u5217\u540d\uff08\u53ef\u9078\uff09\u3002<\/li>\n<li><code>object_name\uff1a<\/code> \u6307\u5b9a\u8981\u64a4\u92b7\u6b0a\u9650\u7684\u5c0d\u8c61\u540d\u7a31\u3002<\/li>\n<li><code>user_name | PUBLIC | role_name\uff1a<\/code> \u6307\u5b9a\u8981\u64a4\u92b7\u6b0a\u9650\u7684\u7528\u6236\u3001\u89d2\u8272\u6216\u7279\u6b8a\u95dc\u9375\u5b57 <code>PUBLIC<\/code>\u3002<\/li>\n<li><code>CASCADE | RESTRICT\uff1a<\/code> \u6307\u5b9a\u64a4\u92b7\u662f\u5426\u61c9\u8a72\u50b3\u905e\u5230\u76f8\u95dc\u4f9d\u8cf4\u5c0d\u8c61\uff08\u53ef\u9078\uff09\u3002<\/li>\n<\/ul>\n<h2 id=\"examples-sjJsCjFHqc\">\u7bc4\u4f8b<\/h2>\n<p>\u8b93\u6211\u5011\u770b\u770b\u5e7e\u500b\u7bc4\u4f8b\uff0c\u4f86\u7406\u89e3 <code>REVOKE<\/code> \u547d\u4ee4\u5982\u4f55\u904b\u4f5c\uff1a<\/p>\n<h3 id=\"example-1-revoking-select-privilege-sjJsCjFHqc\">\u7bc4\u4f8b 1\uff1a\u64a4\u92b7 SELECT \u6b0a\u9650<\/h3>\n<p>\u82e5\u8981\u5f9e\u7528\u6236 <code>john<\/code> \u64a4\u92b7\u5c0d\u8868\u683c <code>employees<\/code> \u7684 <code>SELECT<\/code> \u6b0a\u9650\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>REVOKE SELECT ON employees FROM john;\r\n<\/code><\/pre>\n<p>\u6b64\u547d\u4ee4\u5c07\u6703\u79fb\u9664\u7528\u6236 <code>john<\/code> \u5728 <code>employees<\/code> \u8868\u683c\u4e0a\u7684 <code>SELECT<\/code> \u6b0a\u9650\u3002<\/p>\n<h3 id=\"example-2-revoking-multiple-privileges-sjJsCjFHqc\">\u7bc4\u4f8b 2\uff1a\u64a4\u92b7\u591a\u500b\u6b0a\u9650<\/h3>\n<p>\u60a8\u4e5f\u53ef\u4ee5\u4e00\u6b21\u64a4\u92b7\u591a\u500b\u6b0a\u9650\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u5f9e\u89d2\u8272 <code>manager<\/code> \u64a4\u92b7\u5c0d\u8868\u683c <code>products<\/code> \u7684 <code>INSERT<\/code> \u548c <code>UPDATE<\/code> \u6b0a\u9650\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>REVOKE INSERT, UPDATE ON products FROM manager;\r\n<\/code><\/pre>\n<p>\u6b64\u547d\u4ee4\u5c07\u6703\u5f9e\u89d2\u8272 <code>manager<\/code> \u64a4\u92b7 <code>products<\/code> \u8868\u683c\u4e0a\u7684 <code>INSERT<\/code> \u548c <code>UPDATE<\/code> \u6b0a\u9650\u3002<\/p>\n<h2 id=\"summary-sjJsCjFHqc\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u4e2d\u7684 <code>REVOKE<\/code> \u547d\u4ee4\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u7528\u65bc\u63a7\u5236\u6578\u64da\u5eab\u5c0d\u8c61\u7684\u8a2a\u554f\u6b0a\u9650\u3002\u5b83\u5141\u8a31\u6578\u64da\u5eab\u7ba1\u7406\u54e1\u5f9e\u7528\u6236\u6216\u89d2\u8272\u4e2d\u64a4\u92b7\u5148\u524d\u6388\u4e88\u7684\u6b0a\u9650\u3002\u901a\u904e\u4f7f\u7528 <code>REVOKE<\/code> \u547d\u4ee4\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u53ea\u6709\u6388\u6b0a\u7528\u6236\u624d\u64c1\u6709\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u7684\u5fc5\u8981\u6b0a\u9650\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u7ba1\u7406\u60a8\u7684 PostgreSQL \u6578\u64da\u5eab\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc PostgreSQL \u53ca\u5176\u529f\u80fd\u7684\u8cc7\u8a0a\uff0c\u60a8\u53ef\u4ee5\u63a2\u7d22 <a href=\"https:\/\/server.hk\">Server.HK<\/a>\uff0c\u9019\u662f\u4e00\u5bb6\u9818\u5148\u7684 VPS \u8a17\u7ba1\u516c\u53f8\uff0c\u63d0\u4f9b\u53ef\u9760\u4e14\u5b89\u5168\u7684\u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL \u547d\u4ee4\uff1aRE&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-20372","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20372","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=20372"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20372\/revisions"}],"predecessor-version":[{"id":24383,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20372\/revisions\/24383"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20372"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20372"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20372"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}