{"id":6286,"date":"2021-06-03T10:14:12","date_gmt":"2021-06-03T02:14:12","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=6286"},"modified":"2021-06-03T11:15:37","modified_gmt":"2021-06-03T03:15:37","slug":"clickhouse-%e7%9a%84summingmergetree%e4%bd%bf%e7%94%a8%e6%a0%b7%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/6286","title":{"rendered":"Clickhouse \u7684SummingMergeTree\u4f7f\u7528\u6837\u4f8b"},"content":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdClickhouse\u7684MergeTree\u5bb6\u65cf\u7684SummingMergeTree\u4f7f\u7528\u65b9\u6cd5\uff0c\u5e76\u7ed9\u51fa\u4e00\u4e2a\u64cd\u4f5c\u7684\u5b9e\u9645\u6837\u4f8b\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f\uff1aSummingMergeTree \u4e0d\u518d\u4fdd\u7559\u539f\u59cb\u6570\u636e\uff0c\u800c\u662f\u5c06\u76f8\u540c\u952e\u503c\u7684\u6570\u636e\u503c\u505asum\u5408\u5e76\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\">Directory Navigation<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6a2ad78f0c708\" 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-6a2ad78f0c708\"  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\/6286\/#%E8%AF%AD%E6%B3%95\" >\u8bed\u6cd5<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.gbase8.cn\/en\/6286\/#columns\" >columns<\/a><\/li><\/ul><\/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\/6286\/#%E6%A0%B7%E4%BE%8B\" >\u6837\u4f8b<\/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\/6286\/#%E5%BB%BA%E8%A1%A8\" 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\u5217\u7684\u60c5\u51b5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.gbase8.cn\/en\/6286\/#%E6%8C%87%E5%AE%9A%E4%BA%86%E5%8C%85%E5%90%AB%E4%B8%BB%E9%94%AE%E5%88%97%E7%9A%84%E6%83%85%E5%86%B5\" >\u6307\u5b9a\u4e86\u5305\u542b\u4e3b\u952e\u5217\u7684\u60c5\u51b5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.gbase8.cn\/en\/6286\/#%E6%8C%87%E5%AE%9A%E9%83%A8%E5%88%86%E6%95%B0%E5%80%BC%E5%88%97%E7%9A%84%E6%83%85%E5%86%B5\" >\u6307\u5b9a\u90e8\u5206\u6570\u503c\u5217\u7684\u60c5\u51b5<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\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>CREATE TABLE &#91;IF NOT EXISTS] &#91;db.]table_name &#91;ON CLUSTER cluster]\n(\n    name1 &#91;type1] &#91;DEFAULT|MATERIALIZED|ALIAS expr1],\n    name2 &#91;type2] &#91;DEFAULT|MATERIALIZED|ALIAS expr2],\n    ...\n) ENGINE = SummingMergeTree(&#91;columns])\n&#91;PARTITION BY expr]\n&#91;ORDER BY expr]\n&#91;SAMPLE BY expr]\n&#91;SETTINGS name=value, ...]<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"columns\"><\/span>columns<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u53c2\u4e0eSUM\u7684\u5217\u7684\u540d\u5b57\uff0c\u4e0d\u80fd\u5305\u542b\u4e3b\u952e\u5217\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%A0%B7%E4%BE%8B\"><\/span>\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%BB%BA%E8%A1%A8\"><\/span>\u5efa\u8868<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6211\u4eec\u91c7\u7528\u4e86id\uff0cid2,id3 \u4e09\u4e2a\u5217\u505a\u7ef4\u5ea6\uff0c v1\u548cv2\u4e24\u4e2a\u5217\u505a\u6570\u636e\u5217\u505asum\u3002\u5728SummingMergeTree\u4e2d\uff0c\u5982\u679c\u4e0d\u6307\u5b9a\u805a\u5408\u5217\uff0c\u5219\u9ed8\u8ba4\u6240\u6709\u4e0d\u5728\u6392\u5e8f\u5217\u7684\u7684(\u6587\u6863\u4e0a\u8bf4\u4e3b\u952e\u5217\uff0c\u4f46\u524d\u9762\u4e5f\u5199\u4e86\uff0c\u66f4\u51c6\u786e\u7684\u8bb2\u662f\u6392\u5e8f\u5217)\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) create table tt5(id int, id2 int, id3 int, v1 decimal(16,3),v2 decimal(16,3))engine=SummingMergeTree() order by (id,id2,id3) primary key id;\n\nCREATE TABLE tt5\n(\n    `id` int,\n    `id2` int,\n    `id3` int,\n    `v1` decimal(16, 3),\n    `v2` decimal(16, 3)\n)\nENGINE = SummingMergeTree\nPRIMARY KEY id\nORDER BY (id, id2, id3)\n\nQuery id: f9e3490a-a992-4882-b6af-654cd375a39f\n\nOk.\n\n0 rows in set. Elapsed: 0.027 sec.\n\nlocalhost :) show create table tt5;\n\nSHOW CREATE TABLE tt5\n\nQuery id: 0726fa7c-a23f-4526-9c20-91d1d5b67a97\n\n\u250c\u2500statement\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\n\u2502 CREATE TABLE testdb.tt5\n(\n    `id` Int32,\n    `id2` Int32,\n    `id3` Int32,\n    `v1` Decimal(16, 3),\n    `v2` Decimal(16, 3)\n)\nENGINE = SummingMergeTree\nPRIMARY KEY id\nORDER BY (id, id2, id3)\nSETTINGS index_granularity = 8192 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n1 rows in set. Elapsed: 0.070 sec.\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%8F%92%E5%85%A5%E6%95%B0%E6%8D%AE\"><\/span>\u63d2\u5165\u6570\u636e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u63d2\u51652\u884c\u6570\u636e\uff0c\u5e76\u8ba1\u7b97\u4e0bsum\u503c\u7684SQL\u3002 select id,sum(v1),sum(v2) from tt5 group by id;<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) insert into tt5 values(1,2,3,2.222,3.333);\n\nINSERT INTO tt5 VALUES\n\nQuery id: 2b3d3776-620b-4016-8bc7-3e33a2081f99\n\nOk.\n\n1 rows in set. Elapsed: 0.003 sec.\n\nlocalhost :) select * from tt5;\n\nSELECT *\nFROM tt5\n\nQuery id: a4884598-a58b-415c-ab8d-6d162449c548\n\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 2.222 \u2502 3.333 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n1 rows in set. Elapsed: 0.028 sec.\n\nlocalhost :) insert into tt5 values(1,2,3,1.234,2.345);\n\nINSERT INTO tt5 VALUES\n\nQuery id: 79b07f94-4c4a-4a3d-aae1-55aa8a3370e1\n\nOk.\n\n1 rows in set. Elapsed: 0.005 sec.\n\nlocalhost :) select * from tt5;\n\nSELECT *\nFROM tt5\n\nQuery id: e1f65519-b2d4-45eb-99ed-aa62fa3be1fe\n\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 2.222 \u2502 3.333 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 1.234 \u2502 2.345 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n2 rows in set. Elapsed: 0.147 sec.\n\nlocalhost :) select id,sum(v1),sum(v2) from tt5 group by id;\n\nSELECT\n    id,\n    sum(v1),\n    sum(v2)\nFROM tt5\nGROUP BY id\n\nQuery id: b1bb39e0-3ccf-4c30-9f70-1b573da63309\n\n\u250c\u2500id\u2500\u252c\u2500sum(v1)\u2500\u252c\u2500sum(v2)\u2500\u2510\n\u2502  1 \u2502   3.456 \u2502   5.678 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n1 rows in set. Elapsed: 0.005 sec.\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%81%9A%E4%B8%80%E6%AC%A1%E5%90%88%E5%B9%B6_optimize\"><\/span>\u505a\u4e00\u6b21\u5408\u5e76 optimize<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230v1\uff0cv2\u7684\u6570\u636e\u88ab\u5408\u5e76\u6210\u4e86sum\u540e\u7684\u503c\uff0c\u539f\u59cb\u6570\u636e\u503c\u5df2\u7ecf\u4e0d\u5b58\u5728\u4e86\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) optimize table tt5;\n\nOPTIMIZE TABLE tt5\n\nQuery id: e1833b2e-33f4-4730-b91e-a6a7e64553a6\n\nOk.\n\n0 rows in set. Elapsed: 0.003 sec.\n\nlocalhost :) select * from tt5;\n\nSELECT *\nFROM tt5\n\nQuery id: 8f4fc4fd-7434-485a-be2e-ba65f9d0162f\n\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 3.456 \u2502 5.678 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n1 rows in set. Elapsed: 0.005 sec.\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%86%8D%E6%AC%A1%E6%8F%92%E5%85%A5%E4%BA%9B%E4%B8%8D%E5%90%8C%E7%9A%84id%E7%9A%84%E6%95%B0%E6%8D%AE\"><\/span>\u518d\u6b21\u63d2\u5165\u4e9b\u4e0d\u540c\u7684id\u7684\u6570\u636e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) insert into tt5 values(1,2,4,3.333,4.444);\n\nINSERT INTO tt5 VALUES\n\nQuery id: 1591174e-34a8-4c34-ab2e-060cf4d97923\n\nOk.\n\n1 rows in set. Elapsed: 0.018 sec.\n\nlocalhost :) select * from tt5;\n\nSELECT *\nFROM tt5\n\nQuery id: e0f64cfa-eab7-4eab-93e8-95214ec61fef\n\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 3.456 \u2502 5.678 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n2 rows in set. Elapsed: 0.024 sec.\n\nlocalhost :) optimize table tt5;\n\nOPTIMIZE TABLE tt5\n\nQuery id: 13a92e03-9b6c-49d5-9a99-e871eb57186c\n\nOk.\n\n0 rows in set. Elapsed: 0.005 sec.\n\nlocalhost :) select * from tt5;\n\nSELECT *\nFROM tt5\n\nQuery id: 519763fb-1afd-45b2-9341-772b78f418c6\n\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 3.456 \u2502 5.678 \u2502\n\u2502  1 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n2 rows in set. Elapsed: 0.005 sec.\n\nlocalhost :) insert into tt5 values(2,2,4,3.333,4.444);\n\nINSERT INTO tt5 VALUES\n\nQuery id: b36c19b4-6705-4628-a9ce-28764c87f4cd\n\nOk.\n\n1 rows in set. Elapsed: 0.006 sec.\n\nlocalhost :) insert into tt5 values(3,2,4,3.333,4.444);\n\nINSERT INTO tt5 VALUES\n\nQuery id: 8ba89964-b261-45f2-8c9b-f36d7bfca3a9\n\nOk.\n\n1 rows in set. Elapsed: 0.051 sec.\n\nlocalhost :) select * from tt5;\n\nSELECT *\nFROM tt5\n\nQuery id: 7c7856d0-92cb-4008-93e1-683be7538d0c\n\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 3.456 \u2502 5.678 \u2502\n\u2502  1 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  2 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  3 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n4 rows in set. Elapsed: 0.005 sec.\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%86%8D%E6%AC%A1%E5%90%88%E5%B9%B6\"><\/span>\u518d\u6b21\u5408\u5e76<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) optimize table tt5;\n\nOPTIMIZE TABLE tt5\n\nQuery id: 59c755af-be53-4e8a-88d3-006ad2d29295\n\nOk.\n\n0 rows in set. Elapsed: 0.004 sec.\n\nlocalhost :) select * from tt5;\n\nSELECT *\nFROM tt5\n\nQuery id: 3ee1b7e7-4f6c-4b69-a07e-67d8c8a2b99b\n\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500v2\u2500\u2510\n\u2502  1 \u2502   2 \u2502   3 \u2502 3.456 \u2502 5.678 \u2502\n\u2502  1 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2502  2 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2502  3 \u2502   2 \u2502   4 \u2502 3.333 \u2502 4.444 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n4 rows in set. Elapsed: 0.005 sec.\n\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%9C%A8%E5%81%9Asum%E6%9F%A5%E8%AF%A2\"><\/span>\u5728\u505asum\u67e5\u8be2<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u7b49\u4e8e\u76f4\u63a5\u4ece\u9884\u5904\u7406\u7ed3\u679c\u62ff\u6570\u636e\u4e86\uff0c\u539f\u59cb\u6570\u636e\u518d\u591a\u4e5f\u4e0d\u5f71\u54cd\uff0c\u90fd\u5df2\u7ecfsum\u805a\u5408\u597d\u4e86\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) select id,sum(v1),sum(v2) from tt5 group by id;\n\nSELECT\n    id,\n    sum(v1),\n    sum(v2)\nFROM tt5\nGROUP BY id\n\nQuery id: 4e231f56-1f42-45b6-9f01-78194d1b160a\n\n\u250c\u2500id\u2500\u252c\u2500sum(v1)\u2500\u252c\u2500sum(v2)\u2500\u2510\n\u2502  3 \u2502   3.333 \u2502   4.444 \u2502\n\u2502  2 \u2502   3.333 \u2502   4.444 \u2502\n\u2502  1 \u2502   6.789 \u2502  10.122 \u2502\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\n\n3 rows in set. Elapsed: 0.015 sec.\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E5%85%B6%E5%AE%83%E6%A0%B7%E4%BE%8B\"><\/span>\u5176\u5b83\u6837\u4f8b<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%8C%87%E5%AE%9A%E8%81%9A%E5%90%88%E5%88%97columns\"><\/span>\u6307\u5b9a\u805a\u5408\u5217columns<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) create table tt6(id int, id2 int, id3 int, v1 decimal(16,3),v2 decimal(16,3))engine=SummingMergeTree((v1,v2)) order by (id,id2,id3) primary key id;\r\n\r\nCREATE TABLE tt6\r\n(\r\n    `id` int,\r\n    `id2` int,\r\n    `id3` int,\r\n    `v1` decimal(16, 3),\r\n    `v2` decimal(16, 3)\r\n)\r\nENGINE = SummingMergeTree((v1, v2))\r\nPRIMARY KEY id\r\nORDER BY (id, id2, id3)\r\n\r\nQuery id: 2a3811ba-32c3-48b8-87f4-c77399ca71f0\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.021 sec.\r\n\r\nlocalhost :)\r\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%8C%87%E5%AE%9A%E5%8C%85%E5%90%AB%E4%BA%86order_%E5%88%97%E7%9A%84%E6%83%85%E5%86%B5\"><\/span>\u6307\u5b9a\u5305\u542b\u4e86order \u5217\u7684\u60c5\u51b5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4ece\u5b9e\u9645\u6548\u679c\u770b\uff0c\u5e76\u4e0d\u5f71\u54cd\uff0c\u540e\u9762\u6570\u636e\u7684\u805a\u5408\uff0c\u4f9d\u7136\u662f\u4ee5order \u7684key\u662f\u7ef4\u5ea6\uff0c\u5176\u5b83\u7684\u662f\u6570\u503c\u4e3a\u51c6\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) create table tt6(id int, id2 int, id3 int, v1 decimal(16,3),v2 decimal(16,3))engine=SummingMergeTree((id2,id3,v1,v2)) order by (id,id2,id3) primary key id;\r\n\r\nCREATE TABLE tt6\r\n(\r\n    `id` int,\r\n    `id2` int,\r\n    `id3` int,\r\n    `v1` decimal(16, 3),\r\n    `v2` decimal(16, 3)\r\n)\r\nENGINE = SummingMergeTree((id2, id3, v1, v2))\r\nPRIMARY KEY id\r\nORDER BY (id, id2, id3)\r\n\r\nQuery id: 2a3811ba-32c3-48b8-87f4-c77399ca71f0\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.021 sec.\r\n\r\nlocalhost :)\r\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%8C%87%E5%AE%9A%E4%BA%86%E5%8C%85%E5%90%AB%E4%B8%BB%E9%94%AE%E5%88%97%E7%9A%84%E6%83%85%E5%86%B5\"><\/span>\u6307\u5b9a\u4e86\u5305\u542b\u4e3b\u952e\u5217\u7684\u60c5\u51b5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4ece\u7ed3\u679c\u770b\uff0c\u540c\u6837\u65e0\u5f71\u54cd\uff0c\u5e76\u6ca1\u6709\u62a5\u9519\u3002\u6570\u636e\u4f9d\u7136\u662forder \u7684\u952e\u6ca1\u6709sum\u5408\u5e76\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) create table tt7(id int, id2 int, id3 int, v1 decimal(16,3),v2 decimal(16,3))engine=SummingMergeTree((id,id2,id3,v1,v2)) order by (id,id2,id3) primary key id;\r\n\r\nCREATE TABLE tt7\r\n(\r\n    `id` int,\r\n    `id2` int,\r\n    `id3` int,\r\n    `v1` decimal(16, 3),\r\n    `v2` decimal(16, 3)\r\n)\r\nENGINE = SummingMergeTree((id, id2, id3, v1, v2))\r\nPRIMARY KEY id\r\nORDER BY (id, id2, id3)\r\n\r\nQuery id: 8e9ea6dc-2c06-4ee7-b9aa-72fbefee102a\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.041 sec.\r\n\r\nlocalhost :) insert into tt7 values(1,2,4,33,44);\r\n\r\nINSERT INTO tt7 VALUES\r\n\r\nQuery id: c4c9166d-1596-40fc-ae15-18799bfd6594\r\n\r\nOk.\r\n\r\n1 rows in set. Elapsed: 0.004 sec.\r\n\r\nlocalhost :) insert into tt7 values(1,2,3,11,22);\r\n\r\nINSERT INTO tt7 VALUES\r\n\r\nQuery id: ee2d5f5b-6176-44ad-914a-80683949579d\r\n\r\nOk.\r\n\r\n1 rows in set. Elapsed: 0.006 sec.\r\n\r\nlocalhost :) optimize table tt7;\r\n\r\nOPTIMIZE TABLE tt7\r\n\r\nQuery id: 60d6a958-53c5-469d-ab0a-ceb08c5509f7\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.004 sec.\r\n\r\nlocalhost :) select * from tt7;\r\n\r\nSELECT *\r\nFROM tt7\r\n\r\nQuery id: 7284e429-7f19-4d86-b0e6-7a46080cce80\r\n\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   3 \u2502 11.000 \u2502 22.000 \u2502\r\n\u2502  1 \u2502   2 \u2502   4 \u2502 33.000 \u2502 44.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\r\n2 rows in set. Elapsed: 0.005 sec.\r\n\r\nlocalhost :) insert into tt7 values(1,2,4,55,66);\r\n\r\nINSERT INTO tt7 VALUES\r\n\r\nQuery id: e34029b1-d933-419c-abc9-4cee5daa7737\r\n\r\nOk.\r\n\r\n1 rows in set. Elapsed: 0.004 sec.\r\n\r\nlocalhost :) optimize table tt7;\r\n\r\nOPTIMIZE TABLE tt7\r\n\r\nQuery id: b8be951b-7748-4c92-9039-aba1eec45637\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) select * from tt7;\r\n\r\nSELECT *\r\nFROM tt7\r\n\r\nQuery id: 95c4c386-e3c6-49c6-97dc-0d25f7d1805c\r\n\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   3 \u2502 11.000 \u2502  22.000 \u2502\r\n\u2502  1 \u2502   2 \u2502   4 \u2502 88.000 \u2502 110.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\r\n2 rows in set. Elapsed: 0.006 sec.\r\n\r\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%8C%87%E5%AE%9A%E9%83%A8%E5%88%86%E6%95%B0%E5%80%BC%E5%88%97%E7%9A%84%E6%83%85%E5%86%B5\"><\/span>\u6307\u5b9a\u90e8\u5206\u6570\u503c\u5217\u7684\u60c5\u51b5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u4ece\u7ed3\u679c\u770b\uff0c\u786e\u5b9e\u53ea\u6709\u6307\u5b9a\u7684\u5217\u53c2\u4e0e\u4e86sum, \u5176\u5b83\u7684\u4fdd\u6301\u4e86\u67d0\u4e2a\u539f\u59cb\u503c\u3002\u5982\u4e0b\u4f8b\u5b50\u4e2d\uff0cv2\u5217\u53c2\u4e0e\u4e86\u5408\u5e76\uff0c\u800c v1\u5217\u6ca1\u6709\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>localhost :) create table tt8(id int, id2 int, id3 int, v1 decimal(16,3),v2 decimal(16,3))engine=SummingMergeTree((v2)) order by (id,id2,id3) primary key id;\r\n\r\nCREATE TABLE tt8\r\n(\r\n    `id` int,\r\n    `id2` int,\r\n    `id3` int,\r\n    `v1` decimal(16, 3),\r\n    `v2` decimal(16, 3)\r\n)\r\nENGINE = SummingMergeTree(v2)\r\nPRIMARY KEY id\r\nORDER BY (id, id2, id3)\r\n\r\nQuery id: f4cd6e32-c4ad-4ca0-bcbb-b190bb11f051\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.040 sec.\r\n\r\nlocalhost :) show create table tt8;\r\n\r\nSHOW CREATE TABLE tt8\r\n\r\nQuery id: 4217919a-6675-490b-a5a5-091eb6b4b8af\r\n\r\n\u250c\u2500statement\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u2502 CREATE TABLE testdb.tt8\r\n(\r\n    `id` Int32,\r\n    `id2` Int32,\r\n    `id3` Int32,\r\n    `v1` Decimal(16, 3),\r\n    `v2` Decimal(16, 3)\r\n)\r\nENGINE = SummingMergeTree(v2)\r\nPRIMARY KEY id\r\nORDER BY (id, id2, id3)\r\nSETTINGS index_granularity = 8192 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\r\n1 rows in set. Elapsed: 0.004 sec.\r\n\r\nlocalhost :) insert into tt8 values(1,2,3,11,22);\r\n\r\nINSERT INTO tt8 VALUES\r\n\r\nQuery id: 8b2a0673-a29a-470e-8a34-5e86faebde3f\r\n\r\nOk.\r\n\r\n1 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) insert into tt8 values(1,2,4,33,44);\r\n\r\nINSERT INTO tt8 VALUES\r\n\r\nQuery id: 9df38744-8e59-4ac2-93dc-6d00c6ac54fa\r\n\r\nOk.\r\n\r\n1 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) select * from tt8;\r\n\r\nSELECT *\r\nFROM tt8\r\n\r\nQuery id: 9d94a70b-99c9-4c7a-ac8a-3643f6c1ae8d\r\n\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   3 \u2502 11.000 \u2502 22.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   4 \u2502 33.000 \u2502 44.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\r\n2 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) optimize table tt8;\r\n\r\nOPTIMIZE TABLE tt8\r\n\r\nQuery id: 471eba62-97f8-408f-993c-d28cd3f1cc5c\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) select * from tt8;\r\n\r\nSELECT *\r\nFROM tt8\r\n\r\nQuery id: c6143c05-0d28-4d48-a458-866cb1f314dd\r\n\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   3 \u2502 11.000 \u2502 22.000 \u2502\r\n\u2502  1 \u2502   2 \u2502   4 \u2502 33.000 \u2502 44.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\r\n2 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) insert into tt8 values(1,2,4,55,66);\r\n\r\nINSERT INTO tt8 VALUES\r\n\r\nQuery id: 4097047f-c6b1-4782-993a-208b71097647\r\n\r\nOk.\r\n\r\n1 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) select * from tt8;\r\n\r\nSELECT *\r\nFROM tt8\r\n\r\nQuery id: 8eec66a5-b032-48c0-ac84-9df5452cbfa4\r\n\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   3 \u2502 11.000 \u2502 22.000 \u2502\r\n\u2502  1 \u2502   2 \u2502   4 \u2502 33.000 \u2502 44.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   4 \u2502 55.000 \u2502 66.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\r\n3 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) optimize table tt8;\r\n\r\nOPTIMIZE TABLE tt8\r\n\r\nQuery id: 741b9e91-010f-4f6d-a758-eda6731ca37e\r\n\r\nOk.\r\n\r\n0 rows in set. Elapsed: 0.003 sec.\r\n\r\nlocalhost :) select * from tt8;\r\n\r\nSELECT *\r\nFROM tt8\r\n\r\nQuery id: 317c904d-a67b-49e6-857b-4703bbd22696\r\n\r\n\u250c\u2500id\u2500\u252c\u2500id2\u2500\u252c\u2500id3\u2500\u252c\u2500\u2500\u2500\u2500\u2500v1\u2500\u252c\u2500\u2500\u2500\u2500\u2500\u2500v2\u2500\u2510\r\n\u2502  1 \u2502   2 \u2502   3 \u2502 11.000 \u2502  22.000 \u2502\r\n\u2502  1 \u2502   2 \u2502   4 \u2502 33.000 \u2502 110.000 \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2534\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n\r\n2 rows in set. Elapsed: 0.011 sec.\r\n<\/code><\/pre>","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u4ecb\u7ecdClickhouse\u7684MergeTree\u5bb6\u65cf\u7684SummingMergeTree\u4f7f\u7528\u65b9\u6cd5\uff0c\u5e76\u7ed9\u51fa\u4e00\u4e2a\u64cd\u4f5c\u7684\u5b9e\u9645\u6837\u4f8b\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[],"class_list":["post-6286","post","type-post","status-publish","format-standard","hentry","category-clickhouse"],"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/6286","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=6286"}],"version-history":[{"count":10,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/6286\/revisions"}],"predecessor-version":[{"id":6297,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/6286\/revisions\/6297"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=6286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=6286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=6286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}