{"id":160515,"date":"2024-11-03T22:44:20","date_gmt":"2024-11-03T14:44:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/160515\/"},"modified":"2024-11-03T22:44:22","modified_gmt":"2024-11-03T14:44:22","slug":"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-%e9%96%93%e9%9a%94%e8%a1%a8%e9%81%94%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/160515\/","title":{"rendered":"OceanBase \u6559\u7a0b\uff1aOceanBase \u9593\u9694\u8868\u9054\u5f0f"},"content":{"rendered":"<h1 id=\"oceanbase-%e6%95%99%e7%a8%8b%ef%bc%9aoceanbase-%e9%96%93%e9%9a%94%e8%a1%a8%e9%81%94%e5%bc%8f-MgmULEfAWN\">OceanBase \u6559\u7a0b\uff1aOceanBase \u9593\u9694\u8868\u9054\u5f0f<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u5eab\u6280\u8853\u4e2d\uff0cOceanBase \u4f5c\u70ba\u4e00\u6b3e\u9ad8\u6027\u80fd\u7684\u5206\u4f48\u5f0f\u6578\u64da\u5eab\uff0c\u8d8a\u4f86\u8d8a\u53d7\u5230\u958b\u767c\u8005\u548c\u4f01\u696d\u7684\u9752\u775e\u3002\u5b83\u4e0d\u50c5\u652f\u6301\u9ad8\u4e26\u767c\u7684\u8b80\u5beb\u64cd\u4f5c\uff0c\u9084\u5177\u5099\u826f\u597d\u7684\u64f4\u5c55\u6027\u548c\u5bb9\u932f\u80fd\u529b\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e OceanBase \u7684\u9593\u9694\u8868\u9054\u5f0f\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u4f7f\u7528\u9019\u4e00\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e9%96%93%e9%9a%94%e8%a1%a8%e9%81%94%e5%bc%8f%ef%bc%9f-MgmULEfAWN\">\u4ec0\u9ebc\u662f\u9593\u9694\u8868\u9054\u5f0f\uff1f<\/h2>\n<p>\u9593\u9694\u8868\u9054\u5f0f\uff08Interval Expression\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u8868\u793a\u6642\u9593\u6216\u6578\u5b57\u7bc4\u570d\u7684\u8868\u9054\u65b9\u5f0f\u3002\u5728 OceanBase \u4e2d\uff0c\u9593\u9694\u8868\u9054\u5f0f\u53ef\u4ee5\u7528\u4f86\u9032\u884c\u65e5\u671f\u548c\u6642\u9593\u7684\u8a08\u7b97\uff0c\u7279\u5225\u662f\u5728\u67e5\u8a62\u548c\u6578\u64da\u5206\u6790\u4e2d\u975e\u5e38\u6709\u7528\u3002\u5b83\u5141\u8a31\u7528\u6236\u4ee5\u7c21\u6f54\u7684\u65b9\u5f0f\u6307\u5b9a\u6642\u9593\u6bb5\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\u548c\u53ef\u8b80\u6027\u3002<\/p>\n<h2 id=\"%e9%96%93%e9%9a%94%e8%a1%a8%e9%81%94%e5%bc%8f%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-MgmULEfAWN\">\u9593\u9694\u8868\u9054\u5f0f\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5728 OceanBase \u4e2d\uff0c\u9593\u9694\u8868\u9054\u5f0f\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>INTERVAL 'n' unit<\/code><\/pre>\n<p>\u5176\u4e2d\uff0c<code>n<\/code> \u662f\u4e00\u500b\u6574\u6578\uff0c\u8868\u793a\u9593\u9694\u7684\u6578\u91cf\uff0c\u800c <code>unit<\/code> \u5247\u662f\u6642\u9593\u55ae\u4f4d\uff0c\u53ef\u4ee5\u662f\u4ee5\u4e0b\u5e7e\u7a2e\uff1a<\/p>\n<ul>\n<li>YEAR<\/li>\n<li>MONTH<\/li>\n<li>DAY<\/li>\n<li>HOUR<\/li>\n<li>MINUTE<\/li>\n<li>SECOND<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u6211\u5011\u60f3\u8868\u793a 5 \u5929\u7684\u9593\u9694\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>INTERVAL '5' DAY<\/code><\/pre>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e9%96%93%e9%9a%94%e8%a1%a8%e9%81%94%e5%bc%8f%e7%9a%84%e5%af%a6%e9%9a%9b%e6%a1%88%e4%be%8b-MgmULEfAWN\">\u4f7f\u7528\u9593\u9694\u8868\u9054\u5f0f\u7684\u5be6\u969b\u6848\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u9593\u9694\u8868\u9054\u5f0f\u7684\u5be6\u969b\u6848\u4f8b\uff0c\u5047\u8a2d\u6211\u5011\u6709\u4e00\u500b\u540d\u70ba <code>orders<\/code> \u7684\u8868\u683c\uff0c\u8a72\u8868\u683c\u5305\u542b\u8a02\u55ae\u7684\u65e5\u671f\u548c\u91d1\u984d\u3002\u6211\u5011\u5e0c\u671b\u67e5\u8a62\u904e\u53bb 30 \u5929\u5167\u7684\u6240\u6709\u8a02\u55ae\u3002<\/p>\n<pre><code>SELECT * FROM orders \nWHERE order_date &gt;= CURRENT_DATE - INTERVAL '30' DAY;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86 <code>CURRENT_DATE<\/code> \u51fd\u6578\u4f86\u7372\u53d6\u7576\u524d\u65e5\u671f\uff0c\u7136\u5f8c\u6e1b\u53bb 30 \u5929\u7684\u9593\u9694\uff0c\u5f9e\u800c\u7372\u5f97\u6240\u9700\u7684\u7d50\u679c\u3002<\/p>\n<h2 id=\"%e9%96%93%e9%9a%94%e8%a1%a8%e9%81%94%e5%bc%8f%e7%9a%84%e6%87%89%e7%94%a8%e5%a0%b4%e6%99%af-MgmULEfAWN\">\u9593\u9694\u8868\u9054\u5f0f\u7684\u61c9\u7528\u5834\u666f<\/h2>\n<p>\u9593\u9694\u8868\u9054\u5f0f\u5728\u591a\u7a2e\u5834\u666f\u4e2d\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\uff0c\u5305\u62ec\u4f46\u4e0d\u9650\u65bc\uff1a<\/p>\n<ul>\n<li><strong>\u5831\u544a\u751f\u6210\uff1a<\/strong>\u5728\u751f\u6210\u5831\u544a\u6642\uff0c\u7d93\u5e38\u9700\u8981\u6839\u64da\u6642\u9593\u7bc4\u570d\u4f86\u7be9\u9078\u6578\u64da\u3002<\/li>\n<li><strong>\u6578\u64da\u5206\u6790\uff1a<\/strong>\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u9593\u9694\u8868\u9054\u5f0f\u53ef\u4ee5\u5e6b\u52a9\u5feb\u901f\u8a08\u7b97\u6642\u9593\u6bb5\u5167\u7684\u6578\u64da\u8b8a\u5316\u3002<\/li>\n<li><strong>\u81ea\u52d5\u5316\u4efb\u52d9\uff1a<\/strong>\u5728\u81ea\u52d5\u5316\u4efb\u52d9\u4e2d\uff0c\u6839\u64da\u6642\u9593\u9593\u9694\u57f7\u884c\u7279\u5b9a\u64cd\u4f5c\u662f\u5e38\u898b\u9700\u6c42\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-MgmULEfAWN\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u4f7f\u7528\u9593\u9694\u8868\u9054\u5f0f\u6642\uff0c\u6709\u5e7e\u9ede\u9700\u8981\u6ce8\u610f\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u6642\u9593\u55ae\u4f4d\u7684\u6b63\u78ba\u6027\uff0c\u907f\u514d\u56e0\u55ae\u4f4d\u932f\u8aa4\u5c0e\u81f4\u7684\u67e5\u8a62\u7d50\u679c\u4e0d\u6e96\u78ba\u3002<\/li>\n<li>\u5728\u8655\u7406\u5927\u6578\u64da\u91cf\u6642\uff0c\u5408\u7406\u4f7f\u7528\u7d22\u5f15\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li>\u6839\u64da\u696d\u52d9\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u6642\u9593\u7bc4\u570d\uff0c\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u904e\u6ffe\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-MgmULEfAWN\">\u7e3d\u7d50<\/h2>\n<p>OceanBase \u7684\u9593\u9694\u8868\u9054\u5f0f\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u5728\u6578\u64da\u67e5\u8a62\u548c\u5206\u6790\u4e2d\u63d0\u9ad8\u6548\u7387\u3002\u901a\u904e\u6b63\u78ba\u4f7f\u7528\u9593\u9694\u8868\u9054\u5f0f\uff0c\u60a8\u53ef\u4ee5\u66f4\u8f15\u9b06\u5730\u8655\u7406\u6642\u9593\u548c\u6578\u5b57\u7bc4\u570d\u7684\u8a08\u7b97\uff0c\u5f9e\u800c\u63d0\u5347\u6574\u9ad4\u7684\u6578\u64da\u8655\u7406\u80fd\u529b\u3002\u5982\u679c\u60a8\u5c0d\u65bc <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\u6709\u8208\u8da3\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 OceanBase \u6559\u7a0b\uff0c\u6df1\u5165\u4e86\u89e3\u9593\u9694\u8868\u9054\u5f0f\u7684\u4f7f\u7528\u65b9\u6cd5\u8207\u6700\u4f73\u5be6\u8e10\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\u8207\u6027\u80fd\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-160515","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160515","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=160515"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160515\/revisions"}],"predecessor-version":[{"id":160516,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/160515\/revisions\/160516"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=160515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=160515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=160515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}