{"id":20792,"date":"2024-01-02T06:01:28","date_gmt":"2024-01-02T06:01:28","guid":{"rendered":"https:\/\/server.hk\/blog\/20792\/"},"modified":"2024-11-14T10:38:35","modified_gmt":"2024-11-14T02:38:35","slug":"postgresql-command-create-policy","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20792\/","title":{"rendered":"PostgreSQL \u547d\u4ee4\uff1aCREATE POLICY"},"content":{"rendered":"<h1 id=\"postgresql-command-create-policy-MspgQUlwid\">PostgreSQL \u547d\u4ee4\uff1aCREATE POLICY<\/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\u4e86\u5ee3\u6cdb\u7684\u529f\u80fd\u548c\u7279\u6027\u3002PostgreSQL \u7684\u4e00\u500b\u95dc\u9375\u7279\u6027\u662f\u80fd\u5920\u901a\u904e\u4f7f\u7528\u653f\u7b56\u4f86\u5f37\u5236\u57f7\u884c\u7d30\u7c92\u5ea6\u8a2a\u554f\u63a7\u5236\u3002\u672c\u6587\u5c07\u63a2\u8a0e PostgreSQL \u547d\u4ee4 <code>CREATE POLICY<\/code> \u53ca\u5176\u5982\u4f55\u7528\u65bc\u589e\u5f37\u5b89\u5168\u6027\u4e26\u63a7\u5236\u5c0d\u6578\u64da\u5eab\u7684\u8a2a\u554f\u3002<\/p>\n<h2 id=\"understanding-policies-in-postgresql-MspgQUlwid\">\u7406\u89e3 PostgreSQL \u4e2d\u7684\u653f\u7b56<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u653f\u7b56\u662f\u4e00\u7d44\u898f\u5247\uff0c\u7528\u65bc\u5b9a\u7fa9\u7279\u5b9a\u8868\u6216\u8996\u5716\u7684\u8a2a\u554f\u6b0a\u9650\u3002\u9019\u4e9b\u898f\u5247\u53ef\u4ee5\u7528\u4f86\u63a7\u5236\u8ab0\u53ef\u4ee5\u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\uff0c\u4f8b\u5982 SELECT\u3001INSERT\u3001UPDATE \u6216 DELETE\u3002\u653f\u7b56\u63d0\u4f9b\u4e86\u9748\u6d3b\u800c\u7d30\u7dfb\u7684\u65b9\u5f0f\u4f86\u6839\u64da\u5404\u7a2e\u689d\u4ef6\u5f37\u5236\u57f7\u884c\u8a2a\u554f\u63a7\u5236\u3002<\/p>\n<h2 id=\"the-create-policy-command-MspgQUlwid\">CREATE POLICY \u547d\u4ee4<\/h2>\n<p><code>CREATE POLICY<\/code> \u547d\u4ee4\u7528\u65bc\u70ba PostgreSQL \u4e2d\u7684\u8868\u6216\u8996\u5716\u5275\u5efa\u65b0\u653f\u7b56\u3002\u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE POLICY policy_name\r\n    ON table_name\r\n    [USING (condition)]\r\n    [WITH CHECK (condition)]\r\n    [FOR {ALL | SELECT | INSERT | UPDATE | DELETE}]\r\n    [TO {role_name | PUBLIC}]\r\n    [WITH CHECK OPTION];\r\n<\/code><\/pre>\n<p>\u8b93\u6211\u5011\u4f86\u89e3\u6790\u547d\u4ee4\u7684\u4e0d\u540c\u7d44\u6210\u90e8\u5206\uff1a<\/p>\n<ul>\n<li><code>policy_name<\/code>\uff1a\u9019\u662f\u653f\u7b56\u7684\u540d\u7a31\u3002\u5b83\u5728\u6a21\u5f0f\u5167\u90e8\u61c9\u8a72\u662f\u552f\u4e00\u7684\u3002<\/li>\n<li><code>table_name<\/code>\uff1a\u9019\u662f\u653f\u7b56\u9069\u7528\u7684\u8868\u6216\u8996\u5716\u7684\u540d\u7a31\u3002<\/li>\n<li><code>USING (condition)<\/code>\uff1a\u9019\u500b\u53ef\u9078\u5b50\u53e5\u5141\u8a31\u60a8\u6307\u5b9a\u4e00\u500b\u689d\u4ef6\uff0c\u8a72\u689d\u4ef6\u5fc5\u9808\u6eff\u8db3\u624d\u80fd\u61c9\u7528\u653f\u7b56\u3002\u689d\u4ef6\u4ee5\u5e03\u723e\u8868\u9054\u5f0f\u7684\u5f62\u5f0f\u7de8\u5beb\u3002<\/li>\n<li><code>WITH CHECK (condition)<\/code>\uff1a\u9019\u500b\u53ef\u9078\u5b50\u53e5\u5141\u8a31\u60a8\u6307\u5b9a\u4e00\u500b\u689d\u4ef6\uff0c\u8a72\u689d\u4ef6\u5fc5\u9808\u6eff\u8db3\u624d\u80fd\u5f37\u5236\u57f7\u884c\u653f\u7b56\u3002\u5982\u679c\u8a72\u689d\u4ef6\u8a55\u4f30\u70ba false\uff0c\u5247\u8a72\u64cd\u4f5c\u5c07\u88ab\u62d2\u7d55\u3002<\/li>\n<li><code>FOR {ALL | SELECT | INSERT | UPDATE | DELETE}<\/code>\uff1a\u9019\u500b\u5b50\u53e5\u6307\u5b9a\u653f\u7b56\u9069\u7528\u7684\u64cd\u4f5c\u985e\u578b\u3002<\/li>\n<li><code>TO {role_name | PUBLIC}<\/code>\uff1a\u9019\u500b\u5b50\u53e5\u6307\u5b9a\u653f\u7b56\u9069\u7528\u7684\u89d2\u8272\u3002\u60a8\u53ef\u4ee5\u6307\u5b9a\u4e00\u500b\u5177\u9ad4\u7684\u89d2\u8272\u6216\u4f7f\u7528\u95dc\u9375\u5b57 <code>PUBLIC<\/code> \u5c07\u653f\u7b56\u61c9\u7528\u65bc\u6240\u6709\u89d2\u8272\u3002<\/li>\n<li><code>WITH CHECK OPTION<\/code>\uff1a\u9019\u500b\u53ef\u9078\u5b50\u53e5\u6307\u5b9a\u4efb\u4f55\u63d2\u5165\u6216\u66f4\u65b0\u7684\u884c\u5fc5\u9808\u6eff\u8db3\u653f\u7b56\u7684\u689d\u4ef6\u3002<\/li>\n<\/ul>\n<h2 id=\"example-usage-MspgQUlwid\">\u793a\u4f8b\u7528\u6cd5<\/h2>\n<p>\u8b93\u6211\u5011\u8003\u616e\u4e00\u500b\u4f8b\u5b50\uff0c\u6211\u5011\u5728\u6578\u64da\u5eab\u4e2d\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u6211\u5011\u5e0c\u671b\u9650\u5236\u9664\u4e86 <code>admin<\/code> \u89d2\u8272\u4ee5\u5916\u6240\u6709\u89d2\u8272\u5c0d\u85aa\u8cc7\u5217\u7684\u8a2a\u554f\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 <code>CREATE POLICY<\/code> \u547d\u4ee4\u5275\u5efa\u4e00\u500b\u653f\u7b56\u4f86\u5be6\u73fe\u9019\u4e00\u9ede\uff1a<\/p>\n<pre><code>CREATE POLICY restrict_salary\r\n    ON employees\r\n    FOR SELECT\r\n    TO PUBLIC\r\n    USING (current_user &lt;&gt; 'admin');\r\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u540d\u70ba <code>restrict_salary<\/code> \u7684\u653f\u7b56\u9069\u7528\u65bc <code>employees<\/code> \u8868\uff0c\u4e26\u9650\u5236\u9664\u4e86 <code>admin<\/code> \u89d2\u8272\u4ee5\u5916\u7684\u6240\u6709\u89d2\u8272\u57f7\u884c <code>SELECT<\/code> \u64cd\u4f5c\u3002<code>USING<\/code> \u5b50\u53e5\u6307\u5b9a\u4e86\u5fc5\u9808\u6eff\u8db3\u7684\u689d\u4ef6\uff0c\u5373\u7576\u524d\u7528\u6236\u4e0d\u5f97\u662f <code>admin<\/code> \u89d2\u8272\u3002<\/p>\n<h2 id=\"summary-MspgQUlwid\">\u6458\u8981<\/h2>\n<p>PostgreSQL \u4e2d\u7684 <code>CREATE POLICY<\/code> \u547d\u4ee4\u5141\u8a31\u60a8\u70ba\u8868\u548c\u8996\u5716\u5275\u5efa\u7d30\u7c92\u5ea6\u7684\u8a2a\u554f\u63a7\u5236\u898f\u5247\u3002\u901a\u904e\u4f7f\u7528\u653f\u7b56\uff0c\u60a8\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u5f37\u5236\u57f7\u884c\u5b89\u5168\u6027\u4e26\u63a7\u5236\u5c0d\u6578\u64da\u5eab\u7684\u8a2a\u554f\u3002\u6b64\u529f\u80fd\u63d0\u4f9b\u4e86\u9748\u6d3b\u6027\u548c\u5c0d\u8ab0\u53ef\u4ee5\u5c0d\u6578\u64da\u57f7\u884c\u67d0\u4e9b\u64cd\u4f5c\u7684\u63a7\u5236\u3002<\/p>\n<p>\u6709\u95dc PostgreSQL \u53ca\u5176\u529f\u80fd\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u60a8\u53ef\u4ee5\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a> \u7db2\u7ad9\u3002Server.HK \u63d0\u4f9b\u53ef\u9760\u4e14\u9ad8\u6027\u80fd\u7684 VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\uff0c\u80fd\u5920\u652f\u6301\u60a8\u7684 PostgreSQL \u6578\u64da\u5eab\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PostgreSQL \u547d\u4ee4\uff1aCR&#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-20792","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20792","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=20792"}],"version-history":[{"count":2,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20792\/revisions"}],"predecessor-version":[{"id":24304,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20792\/revisions\/24304"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}