{"id":3600,"date":"2021-01-19T11:46:10","date_gmt":"2021-01-19T03:46:10","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=3600"},"modified":"2023-02-13T17:29:55","modified_gmt":"2023-02-13T09:29:55","slug":"gbase-8a-%e6%89%a7%e8%a1%8c%e8%ae%a1%e5%88%92explain%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/3600","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a \u6267\u884c\u8ba1\u5212Explain\u4ecb\u7ecd"},"content":{"rendered":"\n<p>\u672c\u6587\u4ecb\u7ecdGBaase 8a\u6570\u636e\u5e93\u96c6\u7fa4\u7684\u6267\u884c\u8ba1\u5212\u529f\u80fd\u3002\u5305\u62ec\u8bed\u6cd5\u4ee5\u53ca\u4e00\u4e9b\u5e38\u89c1\u573a\u666f\u7684\u6267\u884c\u8ba1\u5212\u5206\u6790\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u5f55\u5bfc\u822a<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2ac00c2469a\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a2ac00c2469a\"  aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E5%8F%82%E8%80%83\" >\u53c2\u8003<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E8%AF%AD%E6%B3%95\" >\u8bed\u6cd5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E8%AF%B4%E6%98%8E\" >\u8bf4\u660e<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E6%A0%87%E5%87%86%E8%BE%93%E5%87%BA%E7%95%8C%E9%9D%A2%E5%8F%8A%E4%B8%BB%E8%A6%81%E7%BB%84%E6%88%90%E9%83%A8%E5%88%86\" >\u6807\u51c6\u8f93\u51fa\u754c\u9762\u53ca\u4e3b\u8981\u7ec4\u6210\u90e8\u5206<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E6%89%A7%E8%A1%8C%E8%AE%A1%E5%88%92%E6%AF%8F%E4%B8%AA%E5%88%97%E7%9A%84%E5%90%AB%E4%B9%89\" >\u6267\u884c\u8ba1\u5212\u6bcf\u4e2a\u5217\u7684\u542b\u4e49<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E6%AD%A5%E9%AA%A4%E5%86%85%E7%9A%84%E6%89%A7%E8%A1%8C%E8%AE%A1%E5%88%92%E7%BC%A9%E8%BF%9B%E6%98%BE%E7%A4%BA\" >\u6b65\u9aa4\u5185\u7684\u6267\u884c\u8ba1\u5212\u7f29\u8fdb\u663e\u793a<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E6%A0%B7%E4%BE%8B1\" >\u6837\u4f8b1<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#SQL%E8%AF%AD%E5%8F%A5\" >SQL\u8bed\u53e5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E6%89%A7%E8%A1%8C%E8%AE%A1%E5%88%92\" >\u6267\u884c\u8ba1\u5212<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#%E8%A7%A3%E6%9E%90\" >\u89e3\u6790<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#Step00\" >Step00<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#Step01\" >Step01<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#step02\" >step02<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#Step03\" >Step03<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.gbase8.cn\/en\/3600\/#Step04\" >Step04<\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%8F%82%E8%80%83\"><\/span>\u53c2\u8003<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u5982\u9700\u8981\u4ece\u7b80\u5355\u5230\u590d\u6742\u7684SQL\u6267\u884c\u8ba1\u5212\u5b66\u4e60\uff0c\u8bf7\u53c2\u8003<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-\u8001\u7d2b\u7af9\u7684\u5bb6 wp-block-embed-\u8001\u7d2b\u7af9\u7684\u5bb6\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"60arhnjQBx\"><a href=\"https:\/\/www.gbase8.cn\/4100\">GBase 8a\u6267\u884c\u8ba1\u5212\u4ece\u7b80\u5355\u5165\u95e8\u5230\u590d\u6742\u7528\u4f8b\u8bb2\u89e3<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"\u300aGBase 8a\u6267\u884c\u8ba1\u5212\u4ece\u7b80\u5355\u5165\u95e8\u5230\u590d\u6742\u7528\u4f8b\u8bb2\u89e3\u300b\u2014\u8001\u7d2b\u7af9\u7684\u5bb6\" src=\"https:\/\/www.gbase8.cn\/4100\/embed#?secret=60arhnjQBx\" data-secret=\"60arhnjQBx\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%AF%AD%E6%B3%95\"><\/span>\u8bed\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>explain\/desc &#91;extanded\/partitions] select \u2026\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\"><li>explain\u53ea\u80fd\u663e\u793asql select\u90e8\u5206\u7684\u6267\u884c\u8ba1\u5212 <\/li><li>\u6807\u51c6\u8f93\u51fa\u4e3aexplain\uff0c\u52a0extanded\/partitions\u65f6\u53ef\u4ee5\u4ee5\u6269\u5c55\u65b9\u5f0f\u548c\u6811\u5f62\u65b9\u5f0f\u8f93\u51fa\u6267\u884c\u8ba1\u5212\u4fe1\u606f <\/li><li>\u652f\u6301with \u2026 as select \u2026\u7c7b\u578b\u7684CTE\uff08Common Table Expression\uff09\u516c\u7528\u8868\u8868\u8fbe\u5f0f\u8bed\u6cd5\uff0c\u9700\u8981\u96c6\u7fa4\u5c42\u8bbe\u7f6e_t_gcluster_support_cte=1<\/li><\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%AF%B4%E6%98%8E\"><\/span>\u8bf4\u660e<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%87%E5%87%86%E8%BE%93%E5%87%BA%E7%95%8C%E9%9D%A2%E5%8F%8A%E4%B8%BB%E8%A6%81%E7%BB%84%E6%88%90%E9%83%A8%E5%88%86\"><\/span><strong>\u6807\u51c6\u8f93\u51fa\u754c\u9762\u53ca\u4e3b\u8981\u7ec4\u6210\u90e8\u5206<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u663e\u793a\u754c\u9762\u4e3b\u8981\u7ec4\u6210\u90e8\u5206\uff1a <\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>ID\uff1aSQL\u6267\u884c\u6b65\u9aa4\uff0c\u987a\u5e8f\u4ece\u4e0b\u5411\u4e0a <\/li><li>MOTION\uff1a\u67d0\u4e2a\u6b65\u9aa4\u7684\u7ed3\u679c\u5904\u7406\u65b9\u5f0f <\/li><li>OPERATION\uff1a\u67d0\u4e2a\u6b65\u9aa4\u5185\u7684\u5177\u4f53\u6267\u884c\u64cd\u4f5c <\/li><li>TABLE\uff1a\u67d0\u4e2aoperation\u6d89\u53ca\u7684\u8868 <\/li><li>CONDITION\uff1a\u67d0\u4e2aoperation\u64cd\u4f5c\u6d89\u53ca\u7684\u6761\u4ef6<\/li><\/ul>\n\n\n\n<p>1234<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"863\" height=\"524\" src=\"https:\/\/www.gbase8.cn\/wp-content\/uploads\/2023\/02\/image-3.png\" alt=\"\" class=\"wp-image-10722\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%89%A7%E8%A1%8C%E8%AE%A1%E5%88%92%E6%AF%8F%E4%B8%AA%E5%88%97%E7%9A%84%E5%90%AB%E4%B9%89\"><\/span>\u6267\u884c\u8ba1\u5212\u6bcf\u4e2a\u5217\u7684\u542b\u4e49<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td><strong>\u663e\u793a\u5217<\/strong><strong><\/strong><\/td><td><strong>\u5177\u4f53\u91ca\u4e49<\/strong><strong><\/strong><\/td><\/tr><tr><td>ID<\/td><td>\u6267\u884c\u8ba1\u5212\u7684\u6b65\u9aa4\uff0c\u4ece00\u5f00\u59cb\uff0c\u4ece\u663e\u793a\u754c\u9762\u7684\u4e0b\u65b9\u5411\u4e0a\u6267\u884c\u3002<\/td><\/tr><tr><td>MOTION<\/td><td>\u67d0\u4e2a\u6b65\u9aa4\u7684\u7ed3\u679c\u96c6\u5904\u7406\u65b9\u5f0f\uff0c\u5177\u4f53\u5305\u62ec\u5982\u4e0b\uff1a<br>RESULT\uff1a\u7ed3\u679c\u53d1\u9001\u5230\u5ba2\u6237\u7aef\uff0c\u4e00\u822c\u4e3a\u6267\u884c\u8ba1\u5212\u7684\u6700\u540e\u4e00\u6b65\uff1b<br>GATHER\uff1a\u7ed3\u679c\u53d1\u9001\u5230\u6c47\u603b\u8282\u70b9\uff0c\u4e00\u822c\u5728sort\u6216\u805a\u96c6\u51fd\u6570\u64cd\u4f5c\u524d\uff1b<br>REDIST(\u2026)\uff1a\u7ed3\u679cHASH\u91cd\u5206\u5e03\uff0c\u62ec\u53f7\u4e2d\u4e3a\u8ba1\u7b97HASH\u7684\u5217\uff0c\u5982\u679c\u8d85\u957f\u5219\u622a\u65ad\u4e3a\u4e24\u4e2a\u70b9\uff1b<br>NO REDIST\uff1a\u7ed3\u679c\u76f4\u63a5\u4fdd\u5b58\u5230\u5bf9\u5e94\u7684\u6570\u636e\u5206\u7247\uff0c\u4e0d\u8fdb\u884c\u91cd\u5206\u5e03\uff1b<br>BROADCAST\uff1a\u7ed3\u679c\u62c9\u590d\u5236\u8868\uff1b<br>RAND REDIST\uff1a\u7ed3\u679c\u968f\u673a\u5206\u5e03\u5230\u6240\u6709\u8282\u70b9\uff1b<br>SCALAR N\uff1a\u7ed3\u679c\u4e3a\u6807\u91cf\uff0cN\u4e3a\u6807\u91cf\u5b50\u67e5\u8be2\u7684\u7f16\u53f7\uff0c\u5982\u679c\u6761\u4ef6\u4e2d\u6709\u5f15\u7528\uff0c\u5219\u4f7f\u7528&amp;xNx&amp;\u65b9\u5f0f\u5f15\u7528\u3002<\/td><\/tr><tr><td>OPERATION<\/td><td>\u67d0\u4e2a\u6b65\u9aa4\u7684\u5177\u4f53\u64cd\u4f5c\uff1a<br>SCAN\uff1a\u5355\u8868\u626b\u63cf\uff0c\u5e76\u4f7f\u7528\u6761\u4ef6\u8fc7\u6ee4\u6570\u636e\uff1b<br>Table\uff1a\u5355\u8868\uff0c\u6ca1\u6709\u8fc7\u6ee4\u6761\u4ef6\uff1b<br>SubQueryN\uff1a\u5b50\u67e5\u8be2\uff0cN\u4e3a\u81ea\u52a8\u7f16\u53f7\uff1b<br>Step\uff1a\u4f7f\u7528\u524d\u4e00\u4e2aStep\u7684\u7ed3\u679c\uff1b<br>INNER\/LEFT\/FULL JOIN\uff1a\u8fde\u63a5\u64cd\u4f5c\uff1b<br>WHERE\uff1a\u5b50\u67e5\u8be2\u7684WHERE\u6761\u4ef6\uff1b<br>GROUP\uff1a\u5206\u7ec4\u64cd\u4f5c\uff1b<br>ORDER\uff1a\u6392\u5e8f\u64cd\u4f5c\uff1b<br>LIMIT\uff1a\u8ba1\u7b97LIMIT\uff0cOFFSET\uff1b<br>AGG\uff1adistinct\uff0c\u805a\u96c6\u64cd\u4f5c\uff1b<br>UNION\/UNION ALL\/MINUS\/INTERSECT\uff1aUNION\u64cd\u4f5c\u3002<\/td><\/tr><tr><td>TABLE<\/td><td>\u67d0\u4e2a\u64cd\u4f5cOPERATION\u6d89\u53ca\u7684\u8868\uff0c\u53ea\u663e\u793a\u522b\u540d\u548c\u5c5e\u6027\uff0c\u8d85\u957f\u622a\u65ad\u4e3a\u4e24\u4e2a\u70b9\uff1a<br>HASH\u5206\u5e03\u8868\uff1a\u4e2d\u62ec\u53f7\u4e2d\u663e\u793aHASH\u5217\uff1b<br>\u590d\u5236\u8868\uff1a\u663e\u793a[REP]\uff1b<br>\u968f\u673a\u5206\u5e03\u8868\uff1a\u663e\u793a[DIS]\uff1b<br>\u5b50\u67e5\u8be2\uff1aOPERATION\u5217\u663e\u793aSubQueryN\uff0c\u5176\u4e2dN\u4e3a\u6570\u5b57\uff0c\u7528\u6765\u533a\u5206\u4e0d\u540c\u7684\u5b50\u67e5\u8be2\uff1b<br>\u67d0\u4e2a\u6b65\u9aa4\u7684\u7ed3\u679c\u96c6\uff1aOPERATION\u5217\u663e\u793a\u4e3aStep\uff0c\u672c\u5217\u663e\u793a\u4e3a&lt;N&gt;\u5176\u4e2dN\u4e3aID\u5217\u4e2d\u7684\u5bf9\u5e94\u503c\uff0c\u8868\u793a\u8be5\u6b65\u9aa4\u7684\u7ed3\u679c\u3002<\/td><\/tr><tr><td>CONDITION<\/td><td>\u663e\u793a\u67d0\u4e2a\u64cd\u4f5cOPERATION\u7684\u6761\u4ef6\uff1a<br>SCAN\u64cd\u4f5c\u5355\u8868\u8fc7\u6ee4\u6761\u4ef6\uff1b<br>JOIN\u64cd\u4f5c\u7684\u8fde\u63a5\u6761\u4ef6\uff1b<br>GROUP BY\u64cd\u4f5c\u6d89\u53ca\u5217\u6216\u8868\u8fbe\u5f0f\uff1b<br>ORDER BY\u64cd\u4f5c\u6d89\u53ca\u5217\u6216\u8868\u8fbe\u5f0f\uff1b<br>LIMIT OFFSET\u5185\u5bb9\u3002<\/td><\/tr><\/tbody><\/table><figcaption>\u6267\u884c\u8ba1\u5212\u6bcf\u4e2a\u5217\u7684\u542b\u4e49<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%AD%A5%E9%AA%A4%E5%86%85%E7%9A%84%E6%89%A7%E8%A1%8C%E8%AE%A1%E5%88%92%E7%BC%A9%E8%BF%9B%E6%98%BE%E7%A4%BA\"><\/span>\u6b65\u9aa4\u5185\u7684\u6267\u884c\u8ba1\u5212\u7f29\u8fdb\u663e\u793a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"898\" height=\"273\" src=\"https:\/\/www.gbase8.cn\/wp-content\/uploads\/2023\/02\/image-4.png\" alt=\"\" class=\"wp-image-10725\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%B7%E4%BE%8B1\"><\/span>\u6837\u4f8b1<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SQL%E8%AF%AD%E5%8F%A5\"><\/span>SQL\u8bed\u53e5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4e00\u4e2a\u5185\u5c42\u591a\u8868LEFT JOIN\uff0c\u5916\u5c42group\u7684SQL\u3002\u5176\u4e2d\u4e3b\u8868T1\u548cT2\u8868(OVIEW.ods_XXXX)\u662f\u4e00\u4e2a\u89c6\u56fe\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"474\" height=\"260\" src=\"https:\/\/www.gbase8.cn\/wp-content\/uploads\/2023\/02\/image-6.png\" alt=\"\" class=\"wp-image-10729\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%89%A7%E8%A1%8C%E8%AE%A1%E5%88%92\"><\/span>\u6267\u884c\u8ba1\u5212<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"965\" height=\"419\" src=\"https:\/\/www.gbase8.cn\/wp-content\/uploads\/2023\/02\/image-5.png\" alt=\"\" class=\"wp-image-10727\"\/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E8%A7%A3%E6%9E%90\"><\/span>\u89e3\u6790<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step00\"><\/span><strong>Step00<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Step00\u5728\u5185\u5b58\u4e2d\u7269\u5316\u89c6\u56feT2\u8868<\/li><li>T2\u8868\u662f\u89c6\u56fe\uff0cGBase\u4e2d\u8f6c\u6362\u4e3a\u5b50\u67e5\u8be2(SubQuery4)<\/li><li>T2\u8868\u4e0a\u65e0\u5355\u8868\u6761\u4ef6\uff0c\u56e0\u6b64\u89c6\u56fe\u57fa\u8868ods_XXXX\u7684OPXXXX\u662fTable\uff0c\u8868\u793a\u5355\u8868\u4e14\u65e0\u8fc7\u6ee4\u6761\u4ef6<\/li><li>MOTION\u4e2d\u6709REDIST(maXXX)\u8868\u660eods_XXXX\u8868\u9700\u8981\u6309\u7167maiXXX\u8fdb\u884c\u4e00\u6b21\u52a8\u6001\u91cd\u5206\u5e03\uff0cods_XXXX\u8868\u672c\u8eab\u7684\u5206\u5e03\u5217\u662fid\uff0c\u91cd\u5206\u5e03\u7684\u539f\u56e0\u662f\u548ct1\u8868\u7684\u5173\u8054\u5217\u662fmaiXXX<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step01\"><\/span>Step01<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Step01\u662fT1\u8868\u5b50\u67e5\u8be2\u5185\u90e8\u7684\u57fa\u8868\u7269\u5316\u6b65\u9aa4\uff0c\u57fa\u8868\u4e3aods_XXXXX<\/li><li>CONDITION\u4e2dWhere\u6761\u4ef6\u4e3aCAST(INDATE AS DATE) &lt;= CAST(\u20182020-03-31\u2019 AS DATE)\uff0cGROUP BY\u6761\u4ef6\u4e3amaXXXX<\/li><li>MOTION\u4e2d\u6709REDIST(maXXXX)\u8868\u660eodsXXXX\u9700\u8981\u6309\u7167mainno\u8fdb\u884c\u91cd\u5206\u5e03\uff0c odsXXXXX\u8868\u672c\u8eab\u7684\u5206\u5e03\u5217\u662fid\uff0c\u91cd\u5206\u5e03\u539f\u56e0\u662fT1\u8868\u548cT2\u8868join\u7684\u5217\u662fmaXXXXX<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"step02\"><\/span>step02<span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Step02\u662f\u6267\u884cstep01\u548cstep00\u7684\u7ed3\u679cinner join\u7684\u6b65\u9aa4\uff0c\u5373T1 inner join T2\u7684\u6b65\u9aa4<\/li><li>T1\u8868\u662f\u89c6\u56fe\uff0c\u56e0\u6b64GBase\u8f6c\u6210\u5b50\u67e5\u8be2SubQuery2<\/li><li>T1\u3001T2\u8868\u7684join CONDITION\u4e3aT1.MAXXX = T2.MAXXXX AND CAST(T1.INDATE AS DATE) = CAST(T2.INDATE AS DATE)<\/li><li>MOTION\u4e2d\u6709REDIST(userXXXX)\u8868\u660estep02\u6b65\u9aa4\u7684\u7ed3\u679c\u96c6\u9700\u8981\u6309\u7167userXXXX\u8fdb\u884c\u91cd\u5206\u5e03\uff0cstep02\u7ed3\u679c\u96c6\u7684\u5206\u5e03\u5217\u662fmaXXXX\uff0c\u91cd\u5206\u5e03\u539f\u56e0\u662f\u548cT3\u8868join\u7684\u5217\u662fuserXXXX<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step03\"><\/span><strong>Step03<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Step03\u662f\u6267\u884cstep02\u7684\u7ed3\u679c\u96c6\u548cT3 left join\u7684\u6b65\u9aa4<\/li><li>T3\u662f\u89c6\u56fe\uff0c\u56e0\u6b64OPERATION\u4e3a\u5b50\u67e5\u8be2SubQuery5\uff0cT3\u8868\u4e0a\u65e0\u5355\u8868\u6761\u4ef6\uff0c\u56e0\u6b64\u89c6\u56fe\u57fa\u8868ods_XXXXr\u7684OPERATION\u662fTable\uff0c\u8868\u793a\u5355\u8868\u4e14\u65e0\u8fc7\u6ee4\u6761\u4ef6<\/li><li>Left join\u7684\u6761\u4ef6CONDITION\u4e3aT2.USERXXXX = T3.USERXXXX\uff0c\u8fd9\u4e00\u6b65\u7684join\u56e0step02\u7684\u7ed3\u679c\u96c6\u5df2\u7ecf\u6309useXXXX\u8fdb\u884c\u8fc7\u91cd\u5206\u5e03\uff0cT3\u8868\u672c\u8eab\u7684\u5206\u5e03\u5217\u5c31\u662fuseXXXX\uff0c\u56e0\u6b64\u53ef\u4ee5\u8d70\u9759\u6001hash join\u6267\u884c\u8ba1\u5212<\/li><li>MOTION\u4e2d\u6709REDIST(maXXXX)\u8868\u660estep03\u7684\u7ed3\u679c\u96c6\u9700\u8981\u6309\u7167mainno\u5217\u8fdb\u884c\u4e00\u6b21\u91cd\u5206\u5e03\uff0c\u539f\u56e0\u662fstep04\u4e2d\u7684join\u6761\u4ef6\u662fT1.MAXXXX = T4.CLXXXX\uff0c\u4e14T4\u8868\u7684\u5206\u5e03\u5217\u662fCLXXXX<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Step04\"><\/span><strong>Step04<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>Step04\u662f\u6267\u884cstep03\u7ed3\u679c\u96c6\u548cT4\u8868left join\u7684\u6b65\u9aa4<\/li><li>\u6839\u636e\u7f29\u8fdb\u683c\u5f0f\uff0c\u9996\u5148\u6267\u884cstop03\u7ed3\u679c\u96c6&lt;03>\u548cT4\u8868\u7684left join\uff0c\u7136\u540e\u6267\u884cwhere\u6761\u4ef6\u8fc7\u6ee4\uff0c\u6700\u540e\u6267\u884cGROUP BY<\/li><li>T4\u8868\u662f\u89c6\u56fe\uff0c\u6240\u4ee5GBase\u8f6c\u4e3a\u5b50\u67e5\u8be2SubQuery6\uff0c\u57fa\u8868clm_XXXX\u4e3a\u5355\u8868\u6ca1\u6709\u5355\u8868\u6761\u4ef6\uff0c\u56e0\u6b64OPERATION\u4e3aTable<\/li><li>\u8fd9\u4e00\u6b65\u7684\u7ed3\u679c\u96c6&lt;03>\u7684\u5206\u5e03\u5217\u672c\u8eab\u4e3amaXXXX\uff08\u7531step03\u4e2d\u7684MOTION\u91cd\u5206\u5e03\u5f97\u6765\uff09,T4\u8868\u7684\u5206\u5e03\u5217\u662fclaim_XXXX\uff0cleft join\u7684CONDITION\u6761\u4ef6\u4e3amaXXXX = claim_XXXX\uff0c\u6267\u884c\u8ba1\u5212\u4e3a\u9759\u6001hash join<\/li><li>\u5b50\u67e5\u8be2\u7684\u7ed3\u679c\u4e3aTT\u8868\uff0cWHERE\u6761\u4ef6\u4e3aTT.COXXXX &lt;> TT.ACXXXX AND CAST(TT>TURXXXX AS DATE) &lt;= CAST(\u20182020-03-31\u2019 AS DATE)<\/li><li>GROUP BY\u5217\u4e3aCLAXXXX, TURXXXX\uff0c\u5305\u62ec\u4e86\u5b50\u67e5\u8be2tt\u7684hash\u5206\u5e03\u5217CLAXXXXO\uff0c\u56e0\u6b64\u6ee1\u8db3\u9759\u6001hash group by\u6267\u884c\u8ba1\u5212\u6761\u4ef6<\/li><li>Step04\u7684MOTION RESULT\u610f\u4e3a\u5c06\u6700\u7ec8\u53d1\u9001\u6267\u884c\u7ed3\u679c<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdGBaase 8a\u6570\u636e\u5e93\u96c6\u7fa4\u7684\u6267\u884c\u8ba1\u5212\u529f\u80fd\u3002\u5305\u62ec\u8bed\u6cd5\u4ee5\u53ca\u4e00\u4e9b\u5e38\u89c1\u573a\u666f\u7684\u6267\u884c\u8ba1\u5212\u5206\u6790\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-3600","post","type-post","status-publish","format-standard","hentry","category-gbase8a"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=3600"}],"version-history":[{"count":25,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3600\/revisions"}],"predecessor-version":[{"id":10735,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/3600\/revisions\/10735"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=3600"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=3600"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=3600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}