{"id":160661,"date":"2024-11-03T23:57:21","date_gmt":"2024-11-03T15:57:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160661\/"},"modified":"2024-11-03T23:57:22","modified_gmt":"2024-11-03T15:57:22","slug":"postgresql%e6%95%99%e7%a8%8bpostgresql-%e5%88%aa%e9%99%a4%e8%a1%a8%e6%a0%bc","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160661\/","title":{"rendered":"POSTGRESQL\u6559\u7a0bPostgreSQL \u522a\u9664\u8868\u683c"},"content":{"rendered":"<h1 id=\"postgresql%e6%95%99%e7%a8%8b%ef%bc%9apostgresql-%e5%88%aa%e9%99%a4%e8%a1%a8%e6%a0%bc-EINPhivMGl\">PostgreSQL\u6559\u7a0b\uff1aPostgreSQL \u522a\u9664\u8868\u683c<\/h1>\n<p>\u5728\u4f7f\u7528PostgreSQL\u9032\u884c\u6578\u64da\u5eab\u7ba1\u7406\u6642\uff0c\u522a\u9664\u8868\u683c\u662f\u4e00\u500b\u5e38\u898b\u7684\u64cd\u4f5c\u3002\u7121\u8ad6\u662f\u56e0\u70ba\u4e0d\u518d\u9700\u8981\u67d0\u500b\u8868\u683c\uff0c\u9084\u662f\u56e0\u70ba\u9700\u8981\u91cd\u65b0\u8a2d\u8a08\u6578\u64da\u7d50\u69cb\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u522a\u9664\u8868\u683c\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u5728PostgreSQL\u4e2d\u522a\u9664\u8868\u683c\uff0c\u5305\u62ec\u76f8\u95dc\u7684\u8a9e\u6cd5\u3001\u6ce8\u610f\u4e8b\u9805\u4ee5\u53ca\u793a\u4f8b\u3002<\/p>\n<h2 id=\"%e4%b8%80%e3%80%81%e5%88%aa%e9%99%a4%e8%a1%a8%e6%a0%bc%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-EINPhivMGl\">\u4e00\u3001\u522a\u9664\u8868\u683c\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728PostgreSQL\u4e2d\uff0c\u522a\u9664\u8868\u683c\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>DROP TABLE [IF EXISTS] table_name;<\/code><\/pre>\n<p>\u9019\u88e1\u7684\u53c3\u6578\u89e3\u91cb\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li><strong>DROP TABLE<\/strong>\uff1a\u9019\u662f\u7528\u4f86\u522a\u9664\u8868\u683c\u7684\u547d\u4ee4\u3002<\/li>\n<li><strong>IF EXISTS<\/strong>\uff1a\u9019\u662f\u4e00\u500b\u53ef\u9078\u7684\u53c3\u6578\uff0c\u7576\u6307\u5b9a\u6642\uff0c\u5982\u679c\u8868\u683c\u4e0d\u5b58\u5728\uff0c\u5247\u4e0d\u6703\u5831\u932f\u3002<\/li>\n<li><strong>table_name<\/strong>\uff1a\u8981\u522a\u9664\u7684\u8868\u683c\u540d\u7a31\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%ba%8c%e3%80%81%e5%88%aa%e9%99%a4%e8%a1%a8%e6%a0%bc%e7%9a%84%e7%a4%ba%e4%be%8b-EINPhivMGl\">\u4e8c\u3001\u522a\u9664\u8868\u683c\u7684\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u522a\u9664\u8868\u683c\u7684\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e5%88%aa%e9%99%a4%e5%96%ae%e5%80%8b%e8%a1%a8%e6%a0%bc-EINPhivMGl\">1. \u522a\u9664\u55ae\u500b\u8868\u683c<\/h3>\n<pre><code>DROP TABLE employees;<\/code><\/pre>\n<p>\u4e0a\u8ff0\u547d\u4ee4\u5c07\u522a\u9664\u540d\u70ba <code>employees<\/code> \u7684\u8868\u683c\u3002\u5982\u679c\u8a72\u8868\u683c\u5b58\u5728\uff0c\u5247\u6703\u88ab\u522a\u9664\uff1b\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5247\u6703\u5831\u932f\u3002<\/p>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-if-exists-%e5%88%aa%e9%99%a4%e8%a1%a8%e6%a0%bc-EINPhivMGl\">2. \u4f7f\u7528 IF EXISTS \u522a\u9664\u8868\u683c<\/h3>\n<pre><code>DROP TABLE IF EXISTS employees;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u6aa2\u67e5 <code>employees<\/code> \u8868\u683c\u662f\u5426\u5b58\u5728\uff0c\u5982\u679c\u5b58\u5728\u5247\u522a\u9664\uff0c\u5426\u5247\u4e0d\u6703\u5831\u932f\u3002<\/p>\n<h3 id=\"3-%e5%88%aa%e9%99%a4%e5%a4%9a%e5%80%8b%e8%a1%a8%e6%a0%bc-EINPhivMGl\">3. \u522a\u9664\u591a\u500b\u8868\u683c<\/h3>\n<pre><code>DROP TABLE table1, table2, table3;<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u53ef\u4ee5\u540c\u6642\u522a\u9664\u591a\u500b\u8868\u683c\uff0c\u53ea\u9700\u7528\u9017\u865f\u5206\u9694\u8868\u683c\u540d\u7a31\u3002<\/p>\n<h2 id=\"%e4%b8%89%e3%80%81%e5%88%aa%e9%99%a4%e8%a1%a8%e6%a0%bc%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-EINPhivMGl\">\u4e09\u3001\u522a\u9664\u8868\u683c\u7684\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u522a\u9664\u8868\u683c\u4e4b\u524d\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u7279\u5225\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u4e1f\u5931<\/strong>\uff1a\u522a\u9664\u8868\u683c\u5c07\u6c38\u4e45\u522a\u9664\u8a72\u8868\u683c\u4e2d\u7684\u6240\u6709\u6578\u64da\uff0c\u7121\u6cd5\u6062\u5fa9\u3002\u56e0\u6b64\uff0c\u5728\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5099\u4efd\u6578\u64da\u3002<\/li>\n<li><strong>\u5916\u9375\u7d04\u675f<\/strong>\uff1a\u5982\u679c\u8a72\u8868\u683c\u88ab\u5176\u4ed6\u8868\u683c\u901a\u904e\u5916\u9375\u7d04\u675f\u5f15\u7528\uff0c\u5247\u5728\u522a\u9664\u4e4b\u524d\u9700\u8981\u5148\u522a\u9664\u9019\u4e9b\u7d04\u675f\u3002\u5426\u5247\uff0cPostgreSQL\u5c07\u62d2\u7d55\u522a\u9664\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u6b0a\u9650\u554f\u984c<\/strong>\uff1a\u78ba\u4fdd\u57f7\u884c\u522a\u9664\u64cd\u4f5c\u7684\u7528\u6236\u64c1\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u522a\u9664\u8a72\u8868\u683c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%9b%9b%e3%80%81%e7%b5%90%e8%ab%96-EINPhivMGl\">\u56db\u3001\u7d50\u8ad6<\/h2>\n<p>\u522a\u9664PostgreSQL\u4e2d\u7684\u8868\u683c\u662f\u4e00\u500b\u7c21\u55ae\u4f46\u9700\u8981\u8b39\u614e\u64cd\u4f5c\u7684\u904e\u7a0b\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528 <code>DROP TABLE<\/code> \u547d\u4ee4\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u8868\u683c\u3002\u8a18\u5f97\u5728\u522a\u9664\u4e4b\u524d\u5099\u4efd\u6578\u64da\uff0c\u4e26\u6aa2\u67e5\u5916\u9375\u7d04\u675f\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u932f\u8aa4\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684PostgreSQL\u6578\u64da\u5eab\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u7528\u6236\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u61c9\u7528\uff0c\u6211\u5011\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a> \u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728PostgreSQL\u4e2d\u522a\u9664\u8868\u683c\uff0c\u638c\u63e1\u57fa\u672c\u8a9e\u6cd5\u548c\u6ce8\u610f\u4e8b\u9805\uff0c\u8f15\u9b06\u7ba1\u7406\u6578\u64da\u5eab\u7d50\u69cb\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-160661","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160661","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=160661"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160661\/revisions"}],"predecessor-version":[{"id":160662,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160661\/revisions\/160662"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}