{"id":196275,"date":"2024-11-13T21:54:23","date_gmt":"2024-11-13T13:54:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/196275\/"},"modified":"2024-11-13T21:54:24","modified_gmt":"2024-11-13T13:54:24","slug":"%e9%80%99%e4%ba%9b%e7%89%b9%e6%80%a7%ef%bc%8cpostgresql%e7%a7%92%e6%ae%ba%e5%85%b6%e4%bb%96%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/196275\/","title":{"rendered":"\u9019\u4e9b\u7279\u6027\uff0cPostgreSQL\u79d2\u6bba\u5176\u4ed6\u6578\u64da\u5eab"},"content":{"rendered":"

\u9019\u4e9b\u7279\u6027\uff0cPostgreSQL\u79d2\u6bba\u5176\u4ed6\u6578\u64da\u5eab<\/h1>\n

\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7cfb\u7d71\u5c0d\u65bc\u4f01\u696d\u7684\u6210\u529f\u81f3\u95dc\u91cd\u8981\u3002PostgreSQL\u4f5c\u70ba\u4e00\u6b3e\u958b\u6e90\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u56e0\u5176\u5f37\u5927\u7684\u529f\u80fd\u548c\u9748\u6d3b\u6027\u800c\u53d7\u5230\u5ee3\u6cdb\u95dc\u6ce8\u3002\u672c\u6587\u5c07\u63a2\u8a0ePostgreSQL\u7684\u5e7e\u500b\u7279\u6027\uff0c\u4e26\u5206\u6790\u70ba\u4f55\u5b83\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u512a\u65bc\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71\u3002<\/p>\n

1. \u5f37\u5927\u7684\u64f4\u5c55\u6027<\/h2>\n

PostgreSQL\u7684\u64f4\u5c55\u6027\u662f\u5176\u4e00\u5927\u4eae\u9ede\u3002\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u5275\u5efa\u81ea\u5b9a\u7fa9\u6578\u64da\u985e\u578b\u3001\u51fd\u6578\u548c\u64cd\u4f5c\u7b26\u3002\u9019\u610f\u5473\u8457\u958b\u767c\u8005\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u7684\u696d\u52d9\u9700\u6c42\u4f86\u64f4\u5c55\u6578\u64da\u5eab\u7684\u529f\u80fd\uff0c\u800c\u4e0d\u5fc5\u4f9d\u8cf4\u65bc\u9810\u8a2d\u7684\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0bSQL\u8a9e\u53e5\u5275\u5efa\u4e00\u500b\u81ea\u5b9a\u7fa9\u6578\u64da\u985e\u578b\uff1a<\/p>\n

CREATE TYPE my_custom_type AS (\n    field1 INTEGER,\n    field2 TEXT\n);<\/code><\/pre>\n
\u9019\u7a2e\u9748\u6d3b\u6027\u4f7f\u5f97PostgreSQL\u5728\u8655\u7406\u8907\u96dc\u6578\u64da\u7d50\u69cb\u6642\u8868\u73fe\u51fa\u8272\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u8655\u7406\u975e\u7d50\u69cb\u5316\u6578\u64da\u7684\u61c9\u7528\u4e2d\u3002<\/p>\n
2. \u652f\u6301\u5730\u7406\u7a7a\u9593\u6578\u64da<\/h2>\n
PostgreSQL\u7684PostGIS\u64f4\u5c55\u4f7f\u5176\u6210\u70ba\u8655\u7406\u5730\u7406\u7a7a\u9593\u6578\u64da\u7684\u7406\u60f3\u9078\u64c7\u3002\u9019\u4e00\u529f\u80fd\u4f7f\u5f97\u7528\u6236\u80fd\u5920\u5b58\u5132\u3001\u67e5\u8a62\u548c\u5206\u6790\u5730\u7406\u6578\u64da\uff0c\u4e26\u9032\u884c\u7a7a\u9593\u67e5\u8a62\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u67e5\u8a62\u67d0\u500b\u5730\u9ede\u5468\u570d\u7684\u6240\u6709\u5546\u5bb6\uff1a<\/p>\n
SELECT name FROM businesses\nWHERE ST_DWithin(location, ST_MakePoint(longitude, latitude), distance);<\/code><\/pre>\n
\u9019\u4f7f\u5f97PostgreSQL\u5728\u5730\u7406\u4fe1\u606f\u7cfb\u7d71\uff08GIS\uff09\u548c\u4f4d\u7f6e\u57fa\u790e\u670d\u52d9\uff08LBS\uff09\u4e2d\u5177\u6709\u660e\u986f\u7684\u512a\u52e2\u3002<\/p>\n
3. \u4e8b\u52d9\u8655\u7406\u548c\u6578\u64da\u5b8c\u6574\u6027<\/h2>\n
PostgreSQL\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u4e8b\u52d9\u8655\u7406\u80fd\u529b\uff0c\u652f\u6301ACID\uff08\u539f\u5b50\u6027\u3001\u4e00\u81f4\u6027\u3001\u9694\u96e2\u6027\u3001\u6301\u4e45\u6027\uff09\u7279\u6027\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u4e00\u81f4\u6027\u3002\u9019\u5c0d\u65bc\u9700\u8981\u9ad8\u53ef\u9760\u6027\u7684\u61c9\u7528\u81f3\u95dc\u91cd\u8981\u3002\u4f8b\u5982\uff0c\u5728\u9032\u884c\u591a\u6b65\u9a5f\u7684\u6578\u64da\u66f4\u65b0\u6642\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u78ba\u4fdd\u6240\u6709\u64cd\u4f5c\u8981\u9ebc\u5168\u90e8\u6210\u529f\uff0c\u8981\u9ebc\u5168\u90e8\u5931\u6557\uff1a<\/p>\n
BEGIN;\nUPDATE accounts SET balance = balance - 100 WHERE id = 1;\nUPDATE accounts SET balance = balance + 100 WHERE id = 2;\nCOMMIT;<\/code><\/pre>\n
\u9019\u6a23\u7684\u4e8b\u52d9\u8655\u7406\u80fd\u529b\u4f7f\u5f97PostgreSQL\u5728\u91d1\u878d\u548c\u96fb\u5b50\u5546\u52d9\u7b49\u884c\u696d\u4e2d\u5ee3\u53d7\u9752\u775e\u3002<\/p>\n
4. \u9ad8\u5ea6\u7684\u4e26\u884c\u8655\u7406\u80fd\u529b<\/h2>\n
PostgreSQL\u7684\u4e26\u884c\u67e5\u8a62\u80fd\u529b\u4f7f\u5176\u80fd\u5920\u6709\u6548\u5730\u5229\u7528\u591a\u6838\u8655\u7406\u5668\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002\u9019\u4e00\u7279\u6027\u5c0d\u65bc\u9700\u8981\u8655\u7406\u5927\u91cf\u6578\u64da\u7684\u61c9\u7528\u5c24\u70ba\u91cd\u8981\u3002\u901a\u904e\u5408\u7406\u7684\u67e5\u8a62\u8a08\u5283\uff0cPostgreSQL\u80fd\u5920\u540c\u6642\u57f7\u884c\u591a\u500b\u67e5\u8a62\uff0c\u986f\u8457\u7e2e\u77ed\u97ff\u61c9\u6642\u9593\u3002<\/p>\n
5. \u793e\u5340\u652f\u6301\u548c\u6587\u6a94<\/h2>\n
\u4f5c\u70ba\u4e00\u500b\u958b\u6e90\u9805\u76ee\uff0cPostgreSQL\u64c1\u6709\u6d3b\u8e8d\u7684\u793e\u5340\u652f\u6301\u548c\u8c50\u5bcc\u7684\u6587\u6a94\u8cc7\u6e90\u3002\u7528\u6236\u53ef\u4ee5\u8f15\u9b06\u627e\u5230\u89e3\u6c7a\u65b9\u6848\u548c\u6700\u4f73\u5be6\u8e10\uff0c\u9019\u5c0d\u65bc\u65b0\u624b\u548c\u7d93\u9a57\u8c50\u5bcc\u7684\u958b\u767c\u8005\u90fd\u975e\u5e38\u6709\u5e6b\u52a9\u3002\u793e\u5340\u7684\u6d3b\u8e8d\u7a0b\u5ea6\u4e5f\u610f\u5473\u8457PostgreSQL\u4e0d\u65b7\u66f4\u65b0\u548c\u6539\u9032\uff0c\u4fdd\u6301\u8207\u6642\u4ff1\u9032\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u7e3d\u7684\u4f86\u8aaa\uff0cPostgreSQL\u4ee5\u5176\u5f37\u5927\u7684\u64f4\u5c55\u6027\u3001\u5730\u7406\u7a7a\u9593\u6578\u64da\u652f\u6301\u3001\u4e8b\u52d9\u8655\u7406\u80fd\u529b\u3001\u9ad8\u5ea6\u7684\u4e26\u884c\u8655\u7406\u80fd\u529b\u4ee5\u53ca\u6d3b\u8e8d\u7684\u793e\u5340\u652f\u6301\uff0c\u6210\u70ba\u4e86\u8a31\u591a\u4f01\u696d\u7684\u9996\u9078\u6578\u64da\u5eab\u7cfb\u7d71\u3002\u7121\u8ad6\u662f\u958b\u767c\u65b0\u61c9\u7528\u9084\u662f\u7dad\u8b77\u73fe\u6709\u7cfb\u7d71\uff0cPostgreSQL\u90fd\u80fd\u63d0\u4f9b\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 VPS<\/a> \u670d\u52d9\u4f86\u904b\u884c\u60a8\u7684PostgreSQL\u6578\u64da\u5eab\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63a2\u7d22PostgreSQL\u7684\u7368\u7279\u7279\u6027\uff0c\u4e86\u89e3\u70ba\u4f55\u5b83\u5728\u6027\u80fd\u548c\u9748\u6d3b\u6027\u4e0a\u8d85\u8d8a\u5176\u4ed6\u6578\u64da\u5eab\uff0c\u6210\u70ba\u958b\u767c\u8005\u7684\u9996\u9078\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-196275","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196275","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=196275"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196275\/revisions"}],"predecessor-version":[{"id":196276,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/196275\/revisions\/196276"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=196275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=196275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=196275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}