{"id":20768,"date":"2024-01-02T05:37:20","date_gmt":"2024-01-02T05:37:20","guid":{"rendered":"https:\/\/server.hk\/blog\/20768\/"},"modified":"2024-11-14T10:39:03","modified_gmt":"2024-11-14T02:39:03","slug":"postgresql-command-create-operator-family","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/20768\/","title":{"rendered":"PostgreSQL \u547d\u4ee4\uff1aCREATE OPERATOR FAMILY"},"content":{"rendered":"<h1 id=\"postgresql-command-create-operator-family-HuDfrHHkVV\">PostgreSQL \u547d\u4ee4\uff1aCREATE OPERATOR FAMILY<\/h1>\n<p>PostgreSQL \u662f\u4e00\u6b3e\u529f\u80fd\u5f37\u5927\u7684\u958b\u6e90\u95dc\u806f\u5f0f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u5ee3\u6cdb\u7684\u529f\u80fd\u548c\u7279\u6027\u3002\u5176\u4e00\u500b\u95dc\u9375\u512a\u52e2\u5728\u65bc\u5176\u64f4\u5c55\u6027\uff0c\u5141\u8a31\u7528\u6236\u5b9a\u7fa9\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u548c\u51fd\u6578\uff0c\u4ee5\u6eff\u8db3\u5176\u7279\u5b9a\u9700\u6c42\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u5011\u5c07\u63a2\u8a0e PostgreSQL \u4e2d\u7684 CREATE OPERATOR FAMILY \u547d\u4ee4\uff0c\u4e26\u4e86\u89e3\u5982\u4f55\u4f7f\u7528\u5b83\u4f86\u5275\u5efa\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u5bb6\u65cf\u3002<\/p>\n<h2 id=\"understanding-operator-families-HuDfrHHkVV\">\u7406\u89e3\u904b\u7b97\u7b26\u5bb6\u65cf<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0c\u904b\u7b97\u7b26\u5bb6\u65cf\u662f\u4e00\u7d44\u5177\u6709\u76f8\u4f3c\u7279\u6027\u6216\u884c\u70ba\u7684\u76f8\u95dc\u904b\u7b97\u7b26\u3002\u9019\u4e9b\u904b\u7b97\u7b26\u7528\u65bc\u5c0d\u6578\u64da\u985e\u578b\u57f7\u884c\u5404\u7a2e\u64cd\u4f5c\uff0c\u4f8b\u5982\u6bd4\u8f03\u3001\u6a21\u5f0f\u5339\u914d\u548c\u6578\u5b78\u8a08\u7b97\u3002\u904b\u7b97\u7b26\u5bb6\u65cf\u662f\u512a\u5316\u67e5\u8a62\u57f7\u884c\u8a08\u5283\u4e26\u6539\u5584\u6574\u9ad4\u6578\u64da\u5eab\u6027\u80fd\u7684\u91cd\u8981\u7d44\u6210\u90e8\u5206\u3002<\/p>\n<p>\u5728\u9ed8\u8a8d\u60c5\u6cc1\u4e0b\uff0cPostgreSQL \u70ba\u5e38\u898b\u7684\u6578\u64da\u985e\u578b\u63d0\u4f9b\u4e86\u4e00\u7d44\u9810\u5b9a\u7fa9\u7684\u904b\u7b97\u7b26\u5bb6\u65cf\u3002\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u5b9a\u7fa9\u81ea\u5df1\u7684\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u5bb6\u65cf\u4f86\u8655\u7406\u7279\u5b9a\u7684\u6578\u64da\u985e\u578b\u6216\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"the-create-operator-family-command-HuDfrHHkVV\">CREATE OPERATOR FAMILY \u547d\u4ee4<\/h2>\n<p>\u5728 PostgreSQL \u4e2d\uff0cCREATE OPERATOR FAMILY \u547d\u4ee4\u5141\u8a31\u60a8\u5275\u5efa\u65b0\u7684\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u5bb6\u65cf\u3002\u8a72\u547d\u4ee4\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>CREATE OPERATOR FAMILY operator_family_name USING access_method\r\n<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>operator_family_name<\/code> \u662f\u60a8\u8981\u5275\u5efa\u7684\u904b\u7b97\u7b26\u5bb6\u65cf\u7684\u540d\u7a31\uff0c<code>access_method<\/code> \u6307\u7684\u662f\u904b\u7b97\u7b26\u5bb6\u65cf\u4f7f\u7528\u7684\u5b58\u53d6\u65b9\u6cd5\u3002PostgreSQL \u652f\u6301\u591a\u7a2e\u5b58\u53d6\u65b9\u6cd5\uff0c\u5982 btree\u3001hash\u3001gist \u548c gin\uff0c\u6bcf\u7a2e\u90fd\u91dd\u5c0d\u4e0d\u540c\u985e\u578b\u7684\u6578\u64da\u548c\u64cd\u4f5c\u9032\u884c\u4e86\u512a\u5316\u3002<\/p>\n<h2 id=\"example-creating-a-custom-operator-family-HuDfrHHkVV\">\u7bc4\u4f8b\uff1a\u5275\u5efa\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u5bb6\u65cf<\/h2>\n<p>\u5047\u8a2d\u6211\u5011\u8981\u70ba\u4e00\u500b\u540d\u70ba <code>mytype<\/code> \u7684\u65b0\u6578\u64da\u985e\u578b\u5275\u5efa\u4e00\u500b\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u5bb6\u65cf\u3002\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 CREATE OPERATOR FAMILY \u547d\u4ee4\u4f86\u5be6\u73fe\u9019\u4e00\u9ede\uff1a<\/p>\n<pre><code>CREATE OPERATOR FAMILY mytype_ops USING btree;\r\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u4f7f\u7528 btree \u5b58\u53d6\u65b9\u6cd5\u4f86\u5275\u5efa\u4e00\u500b\u540d\u70ba <code>mytype_ops<\/code> \u7684\u904b\u7b97\u7b26\u5bb6\u65cf\u3002\u73fe\u5728\uff0c\u9019\u500b\u904b\u7b97\u7b26\u5bb6\u65cf\u53ef\u4ee5\u7528\u4f86\u5b9a\u7fa9 <code>mytype<\/code> \u6578\u64da\u985e\u578b\u7684\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u548c\u51fd\u6578\u3002<\/p>\n<h2 id=\"conclusion-HuDfrHHkVV\">\u7d50\u8ad6<\/h2>\n<p>PostgreSQL \u7684 CREATE OPERATOR FAMILY \u547d\u4ee4\u70ba\u5275\u5efa\u91dd\u5c0d\u7279\u5b9a\u6578\u64da\u985e\u578b\u548c\u64cd\u4f5c\u91cf\u8eab\u5b9a\u5236\u7684\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u5bb6\u65cf\u63d0\u4f9b\u4e86\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\u3002\u901a\u904e\u5b9a\u7fa9\u81ea\u5df1\u7684\u904b\u7b97\u7b26\u5bb6\u65cf\uff0c\u60a8\u53ef\u4ee5\u512a\u5316\u67e5\u8a62\u57f7\u884c\u8a08\u5283\u4e26\u6539\u5584 PostgreSQL \u6578\u64da\u5eab\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"summary-HuDfrHHkVV\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u4e4b\uff0cPostgreSQL \u4e2d\u7684 CREATE OPERATOR FAMILY \u547d\u4ee4\u5141\u8a31\u60a8\u5275\u5efa\u81ea\u5b9a\u7fa9\u7684\u904b\u7b97\u7b26\u5bb6\u65cf\u3002\u904b\u7b97\u7b26\u5bb6\u65cf\u662f\u7528\u65bc\u6578\u64da\u985e\u578b\u7684\u5404\u7a2e\u64cd\u4f5c\u7684\u76f8\u95dc\u904b\u7b97\u7b26\u96c6\u5408\u3002\u901a\u904e\u5275\u5efa\u81ea\u5b9a\u7fa9\u904b\u7b97\u7b26\u5bb6\u65cf\uff0c\u60a8\u53ef\u4ee5\u512a\u5316\u67e5\u8a62\u57f7\u884c\u8a08\u5283\u4e26\u63d0\u9ad8\u6578\u64da\u5eab\u6027\u80fd\u3002\u5982\u9700\u4e86\u89e3\u66f4\u591a\u95dc\u65bc VPS \u8a17\u7ba1\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f <a href=\"https:\/\/server.hk\">Server.HK<\/a>\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-20768","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20768","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=20768"}],"version-history":[{"count":3,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20768\/revisions"}],"predecessor-version":[{"id":24343,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/20768\/revisions\/24343"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=20768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=20768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=20768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}