{"id":5546,"date":"2023-11-04T17:23:37","date_gmt":"2023-11-04T09:23:37","guid":{"rendered":"https:\/\/ixyzero.com\/blog\/?p=5546"},"modified":"2023-11-04T17:23:37","modified_gmt":"2023-11-04T09:23:37","slug":"hive-sql%e6%97%a5%e6%9c%9f%e5%ad%97%e7%ac%a6%e4%b8%b2%e8%a7%84%e8%8c%83%e5%8c%96","status":"publish","type":"post","link":"https:\/\/ixyzero.com\/blog\/archives\/5546.html","title":{"rendered":"Hive SQL\u65e5\u671f\u5b57\u7b26\u4e32\u89c4\u8303\u5316"},"content":{"rendered":"\n<p>=Start=<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7f18\u7531\uff1a<\/h4>\n\n\n\n<p>\u7b80\u5355\u6574\u7406\u4e00\u4e0b\u4e2a\u4eba\u89c9\u5f97\u6709\u7528\/\u901a\u7528\u7684SQL\u4ee3\u7801\u7247\u6bb5\uff0c\u65b9\u4fbf\u540e\u9762\u6709\u9700\u8981\u7684\u65f6\u5019\u53c2\u8003\u548c\u4f7f\u7528\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u6b63\u6587\uff1a<\/h4>\n\n\n\n<h5 class=\"wp-block-heading\">\u53c2\u8003\u89e3\u7b54\uff1a<\/h5>\n\n\n\n<pre class=\"wp-block-code\"><code>\/*\n\u65e5\u671f\u5b57\u7b26\u4e32\u7edf\u4e00\u89c4\u8303\u5316\u6210\u3010yyyy-MM-dd HH:mm:ss\u3011\u683c\u5f0f\u7684\u4e00\u65b9\u9762\u662f\u770b\u8d77\u6765\u65b9\u4fbf\uff0c\u53e6\u4e00\u65b9\u9762\u662f\u53ef\u4ee5\u4f7f\u7528 unix_timestamp() \u51fd\u6570\u8f6c\u6362\u6210 unix_timestamp \u65f6\u95f4\u6233\u7684\u6570\u5b57\u5f62\u5f0f\uff0c\u65b9\u4fbf\u540e\u9762\u7684\u6bd4\u5bf9\n*\/\n\ndatetime_str\n#length=19 (2023-10-17 10:18:48) (\u4e00\u822c\u81ea\u7814\u7684\u7cfb\u7edf\u7684\u65e5\u5fd7\u683c\u5f0f\u90fd\u662f\u8fd9\u6837\uff0c\u662f\u4e0d\u9700\u8981\u989d\u5916\u5904\u7406\u7684) #OK\n#length=20 (Oct 18 2023 02:04:07) (Cisco VPN) #\u9700\u8981\u8f6c\u6362\n#length=24 (2023-10-17T10:20:15+0800) (Cisco AP) #\u9700\u8981\u5904\u7406\n\n\u5c06\u4e0a\u9762\u5404\u65e5\u5fd7\u4e2d\u7684\u65e5\u671f\u65f6\u95f4\u5b57\u7b26\u4e32\u8f6c\u6362\u6210 unix_timestamp \u65f6\u95f4\u6233\u7684\u6570\u5b57\u5f62\u5f0f\uff0c\u65b9\u4fbf\u540e\u9762\u7684\u6bd4\u5bf9\n\n,unix_timestamp('2022-11-16 00:00:00') as ts_bigint3 -- 1668528000\n\n\u5c06\u65e5\u671f\u5b57\u7b26\u4e32\u8f6c\u6362\u6210unix\u65f6\u95f4\u6233\uff0cHive SQL\u4e2d\u53ea\u6709 unix_timestamp() \u51fd\u6570\uff0c\u800c\u4e14\uff08\u9ed8\u8ba4\uff09\u53ea\u63a5\u53d7\u3010yyyy-MM-dd HH:mm:ss\u3011\u8fd9\u79cd\u683c\u5f0f\uff0c\u4e0d\u662f\u8fd9\u79cd\u683c\u5f0f\u7684\u6211\u4eec\u9700\u8981\u624b\u52a8\u8f6c\u6362\u7136\u540e\u518d\u53bb\u8c03\u7528\u51fd\u6570\uff0c\u5426\u5219\u6548\u679c\u53ef\u80fd\u4e0d\u53ca\u9884\u671f\u3002\n\nwith t as (\n  select\n  '2023-10-18 02:04:07' as datetime1\n  ,'Oct 18 2023 02:04:07' as datetime2\n  ,'2023-10-17T10:20:15+0800' as datetime3\n  ,cast('2023-10-18 02:04:07' as timestamp) as timestamp1 -- 2023-10-18 02:04:07.0\n  ,cast('Oct 18 2023 02:04:07' as timestamp) as timestamp2 -- null\n  ,cast('2023-10-17T10:20:15+0800' as timestamp) as timestamp3 -- null\n)\n\nselect\ndatetime1,datetime2,datetime3,timestamp1,timestamp2,timestamp3\n,date_format(timestamp1,'yyyy-MM-dd HH:mm:ss') as ts1\n,date_format(timestamp2,'yyyy-MM-dd HH:mm:ss') as ts2 -- null\n,date_format(timestamp3,'yyyy-MM-dd HH:mm:ss') as ts3 -- null\nfrom\nt\n;\n\n\n\n-- Hive SQL\u5904\u7406\u975e\u3010yyyy-MM-dd HH:mm:ss\u3011\u683c\u5f0f\u7684\u65e5\u671f\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\n-- \u7b28\u529e\u6cd5\uff0c\u4f46\u6548\u679c\u5176\u5b9e\u633a\u597d\n,case\n    when (datetime_str like 'Jan%') then concat(substr(datetime_str,8,4),'-01-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Feb%') then concat(substr(datetime_str,8,4),'-02-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Mar%') then concat(substr(datetime_str,8,4),'-03-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Apr%') then concat(substr(datetime_str,8,4),'-04-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'May%') then concat(substr(datetime_str,8,4),'-05-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Jun%') then concat(substr(datetime_str,8,4),'-06-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Jul%') then concat(substr(datetime_str,8,4),'-07-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Aug%') then concat(substr(datetime_str,8,4),'-08-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Sep%') then concat(substr(datetime_str,8,4),'-09-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Oct%') then concat(substr(datetime_str,8,4),'-10-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Nov%') then concat(substr(datetime_str,8,4),'-11-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Dec%') then concat(substr(datetime_str,8,4),'-12-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\nelse datetime_str end as time_str\n\n\n'Oct 18 2023 02:04:07' as datetime_str\n,substr(datetime_str,8,4) as s_year\n,substr(datetime_str,1,3) as s_month\n,substr(datetime_str,5,2) as s_day\n,substr(datetime_str,13,8) as s_hhmmss\n,concat(substr(datetime_str,8,4),'-mm-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8)) as yyyymmdd_hhmmss\n\n\nwith t as (\n  select\n  '2023-10-18 02:04:07' as datetime1\n  ,'Oct 18 2023 02:04:07' as datetime_str\n  ,'2023-10-17T10:20:15+0800' as datetime3\n)\n\nselect\ndatetime_str\n,substr(datetime_str,8,4) as s_year\n,substr(datetime_str,1,3) as s_month\n,substr(datetime_str,5,2) as s_day\n,substr(datetime_str,13,8) as s_hhmmss\n,case\n    when (datetime_str like 'Jan%') then concat(substr(datetime_str,8,4),'-01-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Feb%') then concat(substr(datetime_str,8,4),'-02-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Mar%') then concat(substr(datetime_str,8,4),'-03-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Apr%') then concat(substr(datetime_str,8,4),'-04-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'May%') then concat(substr(datetime_str,8,4),'-05-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Jun%') then concat(substr(datetime_str,8,4),'-06-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Jul%') then concat(substr(datetime_str,8,4),'-07-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Aug%') then concat(substr(datetime_str,8,4),'-08-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Sep%') then concat(substr(datetime_str,8,4),'-09-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Oct%') then concat(substr(datetime_str,8,4),'-10-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Nov%') then concat(substr(datetime_str,8,4),'-11-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Dec%') then concat(substr(datetime_str,8,4),'-12-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n\n    when (datetime_str like '%T%+0800') then concat(substr(datetime_str,1,10),' ',substr(datetime_str,12,8))\n\n    -- when (length(datetime_str)=19) then datetime_str\nelse datetime_str end as time_str\n\n,case\n    when (datetime3 like '%T%+0800') then concat(substr(datetime3,1,10),' ',substr(datetime3,12,8))\nelse datetime3 end as time_str2\nfrom\nt\n;\n\n\n-- \u521b\u5efa\u4e00\u4e2a\u5b8f\u7528\u4e8e\u5904\u7406\u975e yyyymmdd-HHMMSS \u683c\u5f0f\u7684\u65e5\u671f\u65f6\u95f4\u5b57\u7b26\u4e32\ncreate temporary macro timestr_format(datetime_str string) case\n    when (datetime_str like 'Jan%') then concat(substr(datetime_str,8,4),'-01-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Feb%') then concat(substr(datetime_str,8,4),'-02-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Mar%') then concat(substr(datetime_str,8,4),'-03-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Apr%') then concat(substr(datetime_str,8,4),'-04-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'May%') then concat(substr(datetime_str,8,4),'-05-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Jun%') then concat(substr(datetime_str,8,4),'-06-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Jul%') then concat(substr(datetime_str,8,4),'-07-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Aug%') then concat(substr(datetime_str,8,4),'-08-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Sep%') then concat(substr(datetime_str,8,4),'-09-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Oct%') then concat(substr(datetime_str,8,4),'-10-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Nov%') then concat(substr(datetime_str,8,4),'-11-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like 'Dec%') then concat(substr(datetime_str,8,4),'-12-',substr(datetime_str,5,2),' ',substr(datetime_str,13,8))\n    when (datetime_str like '%T%+0800') then concat(substr(datetime_str,1,10),' ',substr(datetime_str,12,8))\nelse datetime_str end;\n\nselect\ntimestr_format('Oct 18 2023 02:04:07')\n,timestr_format('2023-10-17T10:20:15+0800')\n,timestr_format('2023-10-18 02:14:07')\n;<\/code><\/pre>\n\n\n\n<p>\u5176\u5b9e unix_timestamp() \u51fd\u6570\u662f\u53ef\u4ee5\u63a5\u65362\u4e2a\u53c2\u6570\u7684\uff0c\u7b2c2\u4e2a\u53c2\u6570\u6307\u5b9a\u8981\u8f6c\u6362\u7684\u7b2c1\u4e2a\u53c2\u6570\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\uff0c\u4e4b\u524d\u6d4b\u8fc7\uff0c\u4f46\u597d\u4e45\u6ca1\u7528\uff0c\u5c31\u53c8\u5fd8\u4e86\u2026\u2026<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>select\n'Jan 09 2023 15:30:21' as input\n,unix_timestamp('Jan 09 2023 15:30:21', 'MMM dd yyyy HH:mm:ss') as parsed\n;\n-- input    parsed  \n-- Jan 09 2023 15:30:21    1673249421\n\n\nunix_timestamp(string date, string pattern)\n\nConvert time string with given pattern to Unix time stamp (in seconds), return 0 if fail.\n\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e2d\u6307\u5b9a\u8981\u8f6c\u6362\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\uff0c\u7136\u540e\u5c06\u7b2c\u4e00\u4e2a\u53c2\u6570\u7684\u65f6\u95f4\u65e5\u671f\u5b57\u7b26\u4e32\u8f6c\u6362\u6210\u4ee5\u79d2\u4e3a\u683c\u5f0f\u7684unix\u65f6\u95f4\u6233\u6570\u5b57\uff0c\u5f53\u8f6c\u6362\u5931\u8d25\u65f6\u8fd4\u56de0\u3002<\/code><\/pre>\n\n\n\n<h5 class=\"wp-block-heading\">\u53c2\u8003\u94fe\u63a5\uff1a<\/h5>\n\n\n\n<p>\u4e00\u4e9bSQL\u4ee3\u7801\u7247\u6bb5\u6574\u7406<br><a href=\"https:\/\/ixyzero.com\/blog\/archives\/5538.html\">https:\/\/ixyzero.com\/blog\/archives\/5538.html<\/a><\/p>\n\n\n\n<p>Hive SQL\u4e2d\u7684\u65e5\u671f\u65f6\u95f4\u5904\u7406\ufffc<br><a href=\"https:\/\/ixyzero.com\/blog\/archives\/5362.html\">https:\/\/ixyzero.com\/blog\/archives\/5362.html<\/a><\/p>\n\n\n\n<p>Hive SQL\u7528\u5b8f\u5b9e\u73b0\u5e38\u7528\u529f\u80fd<br><a href=\"https:\/\/ixyzero.com\/blog\/archives\/5380.html\">https:\/\/ixyzero.com\/blog\/archives\/5380.html<\/a><\/p>\n\n\n\n<p>=END=<\/p>\n","protected":false},"excerpt":{"rendered":"<p>=Start= \u7f18\u7531\uff1a \u7b80\u5355\u6574\u7406\u4e00\u4e0b\u4e2a\u4eba\u89c9\u5f97\u6709\u7528\/\u901a\u7528\u7684SQL\u4ee3\u7801\u7247\u6bb5\uff0c\u65b9\u4fbf\u540e\u9762\u6709\u9700\u8981\u7684\u65f6\u5019\u53c2\u8003\u548c\u4f7f\u7528\u3002 \u6b63\u6587 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,23,7],"tags":[1261,561,1262,1880,2051],"class_list":["post-5546","post","type-post","status-publish","format-standard","hentry","category-database","category-knowledgebase-2","category-programing","tag-hive","tag-snippet","tag-sql","tag-unix_timestamp","tag-2051"],"views":1098,"_links":{"self":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5546","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/comments?post=5546"}],"version-history":[{"count":1,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5546\/revisions"}],"predecessor-version":[{"id":5547,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/posts\/5546\/revisions\/5547"}],"wp:attachment":[{"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/media?parent=5546"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/categories?post=5546"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ixyzero.com\/blog\/wp-json\/wp\/v2\/tags?post=5546"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}