{"id":160653,"date":"2024-11-03T23:53:22","date_gmt":"2024-11-03T15:53:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160653\/"},"modified":"2024-11-03T23:53:23","modified_gmt":"2024-11-03T15:53:23","slug":"postgresql%e6%95%99%e7%a8%8bpostgresql-update-%e8%aa%9e%e5%8f%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160653\/","title":{"rendered":"POSTGRESQL\u6559\u7a0bPostgreSQL UPDATE \u8a9e\u53e5"},"content":{"rendered":"<h1 id=\"postgresql%e6%95%99%e7%a8%8b%ef%bc%9apostgresql-update-%e8%aa%9e%e5%8f%a5-tHJNhOmvYp\">PostgreSQL\u6559\u7a0b\uff1aPostgreSQL UPDATE \u8a9e\u53e5<\/h1>\n<p>PostgreSQL \u662f\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u4f5c\u70ba\u4e00\u540d\u958b\u767c\u8005\u6216\u6578\u64da\u5eab\u7ba1\u7406\u54e1\uff0c\u638c\u63e1 PostgreSQL \u7684\u57fa\u672c\u64cd\u4f5c\u662f\u975e\u5e38\u91cd\u8981\u7684\uff0c\u5176\u4e2d UPDATE \u8a9e\u53e5\u662f\u7528\u65bc\u4fee\u6539\u6578\u64da\u8868\u4e2d\u73fe\u6709\u8a18\u9304\u7684\u95dc\u9375\u5de5\u5177\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e PostgreSQL \u7684 UPDATE \u8a9e\u53e5\uff0c\u5305\u62ec\u5176\u8a9e\u6cd5\u3001\u4f7f\u7528\u7bc4\u4f8b\u53ca\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"update-%e8%aa%9e%e5%8f%a5%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-tHJNhOmvYp\">UPDATE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>UPDATE \u8a9e\u53e5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>UPDATE table_name\nSET column1 = value1, column2 = value2, ...\n[WHERE condition];<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>table_name<\/code> \u662f\u8981\u66f4\u65b0\u7684\u6578\u64da\u8868\u540d\u7a31\uff0c<code>column1<\/code> \u548c <code>column2<\/code> \u662f\u8981\u4fee\u6539\u7684\u5217\uff0c<code>value1<\/code> \u548c <code>value2<\/code> \u662f\u65b0\u7684\u503c\u3002<code>WHERE<\/code> \u5b50\u53e5\u662f\u53ef\u9078\u7684\uff0c\u7528\u65bc\u6307\u5b9a\u54ea\u4e9b\u8a18\u9304\u9700\u8981\u88ab\u66f4\u65b0\u3002\u5982\u679c\u4e0d\u4f7f\u7528 <code>WHERE<\/code> \u5b50\u53e5\uff0c\u5247\u6240\u6709\u8a18\u9304\u90fd\u6703\u88ab\u66f4\u65b0\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-tHJNhOmvYp\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<h3 id=\"%e7%af%84%e4%be%8b-1%ef%bc%9a%e6%9b%b4%e6%96%b0%e5%96%ae%e5%80%8b%e5%88%97-tHJNhOmvYp\">\u7bc4\u4f8b 1\uff1a\u66f4\u65b0\u55ae\u500b\u5217<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>employees<\/code> \u7684\u8868\uff0c\u5305\u542b\u54e1\u5de5\u7684\u59d3\u540d\u548c\u85aa\u6c34\u3002\u82e5\u8981\u5c07\u67d0\u4f4d\u54e1\u5de5\u7684\u85aa\u6c34\u66f4\u65b0\u70ba 60000\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u53e5\uff1a<\/p>\n<pre><code>UPDATE employees\nSET salary = 60000\nWHERE name = 'John Doe';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u53ea\u66f4\u65b0\u59d3\u540d\u70ba &#8216;John Doe&#8217; \u7684\u54e1\u5de5\u7684\u85aa\u6c34\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-2%ef%bc%9a%e6%9b%b4%e6%96%b0%e5%a4%9a%e5%80%8b%e5%88%97-tHJNhOmvYp\">\u7bc4\u4f8b 2\uff1a\u66f4\u65b0\u591a\u500b\u5217<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u540c\u6642\u66f4\u65b0\u591a\u500b\u5217\uff0c\u4f8b\u5982\u66f4\u65b0\u54e1\u5de5\u7684\u85aa\u6c34\u548c\u8077\u4f4d\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>UPDATE employees\nSET salary = 65000, position = 'Senior Developer'\nWHERE name = 'Jane Smith';<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u66f4\u65b0\u59d3\u540d\u70ba &#8216;Jane Smith&#8217; \u7684\u54e1\u5de5\u7684\u85aa\u6c34\u548c\u8077\u4f4d\u3002<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b-3%ef%bc%9a%e4%b8%8d%e4%bd%bf%e7%94%a8-where-%e5%ad%90%e5%8f%a5-tHJNhOmvYp\">\u7bc4\u4f8b 3\uff1a\u4e0d\u4f7f\u7528 WHERE \u5b50\u53e5<\/h3>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u5c07\u6240\u6709\u54e1\u5de5\u7684\u85aa\u6c34\u63d0\u9ad8 10%\uff0c\u53ef\u4ee5\u9019\u6a23\u5beb\uff1a<\/p>\n<pre><code>UPDATE employees\nSET salary = salary * 1.1;<\/code><\/pre>\n<p>\u9019\u689d\u8a9e\u53e5\u5c07\u66f4\u65b0\u6240\u6709\u54e1\u5de5\u7684\u85aa\u6c34\uff0c\u5c07\u5176\u63d0\u9ad8 10%\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-tHJNhOmvYp\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li><strong>\u4f7f\u7528 WHERE \u5b50\u53e5\uff1a<\/strong>\u5728\u57f7\u884c UPDATE \u8a9e\u53e5\u6642\uff0c\u52d9\u5fc5\u5c0f\u5fc3\u4f7f\u7528 <code>WHERE<\/code> \u5b50\u53e5\uff0c\u4ee5\u907f\u514d\u610f\u5916\u66f4\u65b0\u6240\u6709\u8a18\u9304\u3002<\/li>\n<li><strong>\u4e8b\u52d9\u8655\u7406\uff1a<\/strong>\u5728\u9032\u884c\u91cd\u8981\u7684\u6578\u64da\u66f4\u65b0\u6642\uff0c\u5efa\u8b70\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u548c\u5b8c\u6574\u6027\u3002\u53ef\u4ee5\u4f7f\u7528 <code>BEGIN<\/code> \u548c <code>COMMIT<\/code> \u4f86\u7ba1\u7406\u4e8b\u52d9\u3002<\/li>\n<li><strong>\u5099\u4efd\u6578\u64da\uff1a<\/strong>\u5728\u9032\u884c\u5927\u898f\u6a21\u66f4\u65b0\u4e4b\u524d\uff0c\u6700\u597d\u5148\u5099\u4efd\u6578\u64da\uff0c\u4ee5\u9632\u6b62\u6578\u64da\u4e1f\u5931\u6216\u640d\u58de\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-tHJNhOmvYp\">\u7e3d\u7d50<\/h2>\n<p>PostgreSQL \u7684 UPDATE \u8a9e\u53e5\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u6709\u6548\u5730\u4fee\u6539\u6578\u64da\u8868\u4e2d\u7684\u8a18\u9304\u3002\u901a\u904e\u638c\u63e1\u5176\u8a9e\u6cd5\u548c\u4f7f\u7528\u7bc4\u4f8b\uff0c\u60a8\u53ef\u4ee5\u66f4\u9748\u6d3b\u5730\u7ba1\u7406\u6578\u64da\u3002\u7121\u8ad6\u662f\u5728\u958b\u767c\u65b0\u61c9\u7528\u7a0b\u5e8f\u9084\u662f\u7dad\u8b77\u73fe\u6709\u7cfb\u7d71\u6642\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u4f7f\u7528 UPDATE \u8a9e\u53e5\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u5982\u679c\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u4f86\u6258\u7ba1\u60a8\u7684 PostgreSQL \u6578\u64da\u5eab\uff0c\u78ba\u4fdd\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u904b\u884c\u6d41\u66a2\u4e14\u7a69\u5b9a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528PostgreSQL UPDATE\u8a9e\u53e5\u6709\u6548\u66f4\u65b0\u8cc7\u6599\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u638c\u63e1\u57fa\u672c\u8a9e\u6cd5\u8207\u5be6\u7528\u7bc4\u4f8b\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-160653","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160653","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=160653"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160653\/revisions"}],"predecessor-version":[{"id":160654,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160653\/revisions\/160654"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160653"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160653"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160653"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}