{"id":61429,"date":"2024-10-13T11:03:15","date_gmt":"2024-10-13T03:03:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/61429\/"},"modified":"2024-10-13T11:03:15","modified_gmt":"2024-10-13T03:03:15","slug":"flink-sql-%e7%9f%a5%e5%85%b6%e6%89%80%e4%bb%a5%e7%84%b6%ef%bc%9asql-%e7%9a%84%e6%99%82%e5%8d%80%e5%95%8f%e9%a1%8c%ef%bc%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/61429\/","title":{"rendered":"Flink SQL \u77e5\u5176\u6240\u4ee5\u7136\uff1aSQL \u7684\u6642\u5340\u554f\u984c\uff01"},"content":{"rendered":"<h1 id=\"flink-sql-%e7%9f%a5%e5%85%b6%e6%89%80%e4%bb%a5%e7%84%b6%ef%bc%9asql-%e7%9a%84%e6%99%82%e5%8d%80%e5%95%8f%e9%a1%8c%ef%bc%81-BMAHaOoeIK\">Flink SQL \u77e5\u5176\u6240\u4ee5\u7136\uff1aSQL \u7684\u6642\u5340\u554f\u984c\uff01<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6642\u9593\u7684\u7ba1\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u5c24\u5176\u662f\u5728\u4f7f\u7528 SQL \u67e5\u8a62\u6642\uff0c\u6642\u5340\u554f\u984c\u5e38\u5e38\u6703\u5f15\u767c\u6df7\u6dc6\u548c\u932f\u8aa4\u3002Apache Flink \u4f5c\u70ba\u4e00\u500b\u6d41\u8655\u7406\u6846\u67b6\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684 SQL \u652f\u6301\uff0c\u4f46\u5728\u8655\u7406\u6642\u9593\u548c\u6642\u5340\u6642\uff0c\u958b\u767c\u8005\u9700\u8981\u7279\u5225\u6ce8\u610f\u3002<\/p>\n<h2 id=\"%e6%99%82%e5%8d%80%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-BMAHaOoeIK\">\u6642\u5340\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6642\u5340\u662f\u6307\u5730\u7403\u4e0a\u4e0d\u540c\u5730\u5340\u7684\u6642\u9593\u5dee\u7570\u3002\u6bcf\u500b\u6642\u5340\u901a\u5e38\u4ee5 UTC\uff08\u5354\u8abf\u4e16\u754c\u6642\u9593\uff09\u70ba\u57fa\u6e96\uff0c\u4e26\u6839\u64da\u5730\u7406\u4f4d\u7f6e\u7684\u4e0d\u540c\u9032\u884c\u8abf\u6574\u3002\u9019\u610f\u5473\u8457\u5728\u4e0d\u540c\u7684\u5730\u5340\uff0c\u7576\u5730\u6642\u9593\u53ef\u80fd\u6703\u6709\u6240\u4e0d\u540c\u3002\u4f8b\u5982\uff0c\u9999\u6e2f\u7684\u6a19\u6e96\u6642\u9593\u662f UTC+8\uff0c\u800c\u7f8e\u570b\u6771\u90e8\u6642\u9593\u5247\u662f UTC-5\u3002<\/p>\n<h2 id=\"flink-sql-%e4%b8%ad%e7%9a%84%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-BMAHaOoeIK\">Flink SQL \u4e2d\u7684\u6642\u9593\u985e\u578b<\/h2>\n<p>\u5728 Flink SQL \u4e2d\uff0c\u6642\u9593\u985e\u578b\u4e3b\u8981\u6709\u4e09\u7a2e\uff1a<code>TIMESTAMP<\/code>\u3001<code>TIMESTAMP WITH TIME ZONE<\/code> \u548c <code>DATE<\/code>\u3002\u9019\u4e9b\u985e\u578b\u5728\u8655\u7406\u6642\u9593\u6578\u64da\u6642\u6709\u8457\u4e0d\u540c\u7684\u7279\u6027\uff1a<\/p>\n<ul>\n<li><code>TIMESTAMP<\/code>\uff1a\u4e0d\u5305\u542b\u6642\u5340\u4fe1\u606f\uff0c\u50c5\u8868\u793a\u4e00\u500b\u5177\u9ad4\u7684\u6642\u9593\u9ede\u3002<\/li>\n<li><code>TIMESTAMP WITH TIME ZONE<\/code>\uff1a\u5305\u542b\u6642\u5340\u4fe1\u606f\uff0c\u80fd\u5920\u81ea\u52d5\u6839\u64da\u6642\u5340\u9032\u884c\u8f49\u63db\u3002<\/li>\n<li><code>DATE<\/code>\uff1a\u50c5\u8868\u793a\u65e5\u671f\uff0c\u4e0d\u5305\u542b\u6642\u9593\u6216\u6642\u5340\u4fe1\u606f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%99%82%e5%8d%80%e5%95%8f%e9%a1%8c%e7%9a%84%e6%8c%91%e6%88%b0-BMAHaOoeIK\">\u6642\u5340\u554f\u984c\u7684\u6311\u6230<\/h2>\n<p>\u5728\u4f7f\u7528 Flink SQL \u6642\uff0c\u6642\u5340\u554f\u984c\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u4e0d\u4e00\u81f4\u6216\u67e5\u8a62\u7d50\u679c\u4e0d\u6b63\u78ba\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6311\u6230\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u64da\u4f86\u6e90\u7684\u6642\u5340\u4e0d\u4e00\u81f4\uff1a<\/strong>\u5982\u679c\u6578\u64da\u4f86\u81ea\u4e0d\u540c\u7684\u6642\u5340\uff0c\u5247\u5728\u9032\u884c\u67e5\u8a62\u6642\u9700\u8981\u7279\u5225\u6ce8\u610f\uff0c\u5426\u5247\u53ef\u80fd\u6703\u5c0e\u81f4\u932f\u8aa4\u7684\u7d50\u679c\u3002<\/li>\n<li><strong>\u67e5\u8a62\u7d50\u679c\u7684\u89e3\u91cb\uff1a<\/strong>\u4f7f\u7528 <code>TIMESTAMP WITH TIME ZONE<\/code> \u6642\uff0c\u67e5\u8a62\u7d50\u679c\u6703\u6839\u64da\u7576\u524d\u6703\u8a71\u7684\u6642\u5340\u9032\u884c\u8f49\u63db\uff0c\u9019\u53ef\u80fd\u6703\u8b93\u958b\u767c\u8005\u611f\u5230\u56f0\u60d1\u3002<\/li>\n<li><strong>\u6642\u9593\u6233\u7684\u5b58\u5132\uff1a<\/strong>\u5728\u6578\u64da\u5eab\u4e2d\u5b58\u5132\u6642\u9593\u6233\u6642\uff0c\u61c9\u8a72\u9078\u64c7\u5408\u9069\u7684\u6642\u9593\u985e\u578b\uff0c\u4ee5\u907f\u514d\u5728\u67e5\u8a62\u6642\u51fa\u73fe\u4e0d\u5fc5\u8981\u7684\u8f49\u63db\u3002<\/li>\n<\/ul>\n<h2 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-BMAHaOoeIK\">\u89e3\u6c7a\u65b9\u6848<\/h2>\n<p>\u70ba\u4e86\u6709\u6548\u5730\u8655\u7406 Flink SQL \u4e2d\u7684\u6642\u5340\u554f\u984c\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u500b\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u7d71\u4e00\u6578\u64da\u4f86\u6e90\u7684\u6642\u5340\uff1a<\/strong>\u5728\u5c07\u6578\u64da\u5c0e\u5165 Flink \u4e4b\u524d\uff0c\u78ba\u4fdd\u6240\u6709\u6578\u64da\u90fd\u8f49\u63db\u70ba\u7d71\u4e00\u7684\u6642\u5340\uff0c\u4f8b\u5982 UTC\u3002<\/li>\n<li><strong>\u4f7f\u7528 <code>TIMESTAMP WITH TIME ZONE<\/code>\uff1a<\/strong>\u5728\u9700\u8981\u8655\u7406\u6642\u5340\u7684\u60c5\u6cc1\u4e0b\uff0c\u4f7f\u7528\u9019\u7a2e\u6642\u9593\u985e\u578b\u4f86\u78ba\u4fdd\u6642\u9593\u7684\u6e96\u78ba\u6027\u3002<\/li>\n<li><strong>\u660e\u78ba\u8a2d\u7f6e\u6703\u8a71\u6642\u5340\uff1a<\/strong>\u5728\u57f7\u884c\u67e5\u8a62\u4e4b\u524d\uff0c\u4f7f\u7528 <code>SET TIME ZONE<\/code> \u6307\u4ee4\u4f86\u8a2d\u7f6e\u6703\u8a71\u7684\u6642\u5340\uff0c\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7d50\u679c\u7684\u6b63\u78ba\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e4%be%8b%e4%bb%a3%e7%a2%bc-BMAHaOoeIK\">\u5be6\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5728 Flink SQL \u4e2d\u8a2d\u7f6e\u6642\u5340\uff1a<\/p>\n<pre><code>SET TIME ZONE 'UTC';\nSELECT * FROM my_table WHERE event_time &gt; TIMESTAMP '2023-01-01 00:00:00';\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u9996\u5148\u8a2d\u7f6e\u4e86\u6703\u8a71\u7684\u6642\u5340\u70ba UTC\uff0c\u7136\u5f8c\u67e5\u8a62\u4e8b\u4ef6\u6642\u9593\u5927\u65bc\u7279\u5b9a\u6642\u9593\u7684\u6578\u64da\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u67e5\u8a62\u7d50\u679c\u7684\u6e96\u78ba\u6027\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BMAHaOoeIK\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u4f7f\u7528 Flink SQL \u6642\uff0c\u6642\u5340\u554f\u984c\u662f\u4e00\u500b\u4e0d\u53ef\u5ffd\u8996\u7684\u6311\u6230\u3002\u901a\u904e\u7406\u89e3\u6642\u5340\u7684\u57fa\u672c\u6982\u5ff5\u3001\u6b63\u78ba\u4f7f\u7528\u6642\u9593\u985e\u578b\u4ee5\u53ca\u63a1\u53d6\u9069\u7576\u7684\u89e3\u6c7a\u65b9\u6848\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6642\u9593\u6578\u64da\uff0c\u907f\u514d\u6f5b\u5728\u7684\u932f\u8aa4\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\uff0c\u9078\u64c7\u5408\u9069\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4e5f\u662f\u81f3\u95dc\u91cd\u8981\u7684\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u7684\u7a69\u5b9a\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 Flink SQL \u4e2d\u7684\u6642\u5340\u554f\u984c\uff0c\u4e86\u89e3\u5982\u4f55\u6b63\u78ba\u8655\u7406\u6642\u9593\u6578\u64da\uff0c\u63d0\u5347\u67e5\u8a62\u6e96\u78ba\u6027\u8207\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-61429","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61429","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=61429"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61429\/revisions"}],"predecessor-version":[{"id":61430,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/61429\/revisions\/61430"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=61429"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=61429"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=61429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}