{"id":20860,"date":"2022-06-10T16:05:13","date_gmt":"2022-06-10T08:05:13","guid":{"rendered":"https:\/\/masterconcept.ai\/?p=20860"},"modified":"2024-08-16T11:25:38","modified_gmt":"2024-08-16T03:25:38","slug":"bigquery-optimization-best-practices-partitioned-and-clustered-tables","status":"publish","type":"post","link":"https:\/\/masterconcept.ai\/zh-hant\/blog\/bigquery-optimization-best-practices-partitioned-and-clustered-tables\/","title":{"rendered":"BigQuery \u6700\u4f73\u5316\u5b8c\u7f8e\u5be6\u8e10\uff1aPartitioned and Clustered Table"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/masterconcept.ai\/zh-hant\/google-cloud-platform\/\" target=\"_blank\" rel=\"noopener\" title=\"BigQuery\">BigQuery<\/a> \u662f Google \u63d0\u4f9b\u5b8c\u5168\u8a17\u7ba1\u3001\u4f01\u696d\u7d1a\u7684\u8cc7\u6599\u5009\u5132\uff08Dataware house\uff09\u670d\u52d9\u3002\u7576\u60a8\u4f7f\u7528 BigQuery \u4e00\u6bb5\u6642\u9593\u5f8c\uff0c\u6703\u767c\u73fe\u96a8\u8457\u60a8\u7684\u696d\u52d9\u62d3\u5c55\uff0c\u8d8a\u4f86\u8d8a\u591a\u8cc7\u6599\u5c07\u6703\u88ab\u5132\u5b58\u5728 BigQuery \u5167\u3002\u800c\u7121\u53ef\u907f\u514d\u5730\uff0c\u7531\u65bc\u5728\u904b\u7b97\u4e0a BigQuery \u6703\u9700\u8981\u6383\u63cf\u66f4\u591a\u8cc7\u6599\uff0c\u9020\u6210\u4e86\u66f4\u9577\u7684\u7b49\u5f85\u6642\u9593\u548c\u66f4\u591a\u7684\u6210\u672c\u652f\u51fa\u3002<\/p>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u5982\u4f55\u6709\u6548\u5c07 BigQuery \u4f7f\u7528\u5230\u6700\u4f73\u5316\uff1f<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u70ba\u4e86\u5e6b\u52a9\u4f01\u696d\u89e3\u6c7a\u9019\u500b\u6642\u9593\u6210\u672c\u7684\u554f\u984c\u53ca\u82b1\u8cbb\uff0cGoogle \u4e5f\u63d0\u4f9b\u4e86<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/best-practices-costs\">\u4e00\u7cfb\u5217<\/a>\u7684\u65b9\u6cd5\u4f86\u5e6b\u52a9\u4f01\u696d\u6700\u4f73\u5316BigQuery \u7684\u4f7f\u7528\uff0c\u5176\u4e2d\u5305\u542b\u4e86<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/best-practices-costs#preview-data\">\u4f7f\u7528 preview \u529f\u80fd\u53d6\u4ee3 Query \u4f86\u6aa2\u8996\u8cc7\u6599\u8868<\/a>\u3001<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/best-practices-costs#avoid_select_\">\u907f\u514d\u4f7f\u7528 selcet *<\/a>\u3001<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/cached-results\">\u4f7f\u7528 Caching results<\/a>\u3001<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/best-practices-costs#limit_query_costs_by_restricting_the_number_of_bytes_billed\">\u8a2d\u5b9a Query \u8cc7\u6599\u91cf\u4e0a\u9650<\/a>\u7b49\u7b49\u7684\u89e3\u6c7a\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u662f\u82e5\u60a8\u767c\u73fe\u4e0d\u8ad6\u60a8\u5df2\u7d93\u6700\u4f73\u5316\u60a8\u7684 Query \u4f46\u4ecd\u7136\u7121\u6cd5\u6709\u6548\u964d\u5730 BigQuery \u7684\u7b49\u5f85\u6642\u9593\u4e26\u63a7\u5236\u6210\u672c\u7684\u652f\u51fa\uff0c\u4e0d\u4eff\u53ef\u4ee5\u91cd\u65b0\u8a2d\u8a08\u60a8\u7684\u8cc7\u6599\u8868\uff0c\u4e5f\u5c31\u662f\u4f7f\u7528 BigQuery \u7684 <a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/partitioned-tables#limitations\">Partitioned Table<\/a> \u548c <a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/clustered-tables\">Clustered Table<\/a>\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u9019\u7bc7\u6587\u7ae0\u5c07\u6703\u5e36\u60a8\u8a8d\u8b58\u9019\u5169\u500b\u7279\u6b8a\u7684\u8cc7\u6599\u8868\uff0c\u4e26\u6bd4\u8f03\u5169\u8005\u9593\u7684\u4e0d\u540c\uff0c\u4e26\u4e14\u5728\u6700\u5f8c\u5be6\u969b\u6e2c\u8a66\u5176\u5e36\u4f86\u7684\u6548\u679c\u3002<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>BigQuery \u7279\u6b8a\u8cc7\u6599\u8868- Partitioned Table<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Partitioned Table \u662f\u5728 BigQuery \u4e2d\u4e00\u7a2e\u5c07\u8cc7\u9032\u884c\u5206\u5340\u7684\u7279\u6b8a\u8cc7\u6599\u8868\u3002\u5c07\u5927\u578b\u8cc7\u6599\u8868\u5207\u5272\u6210\u4e0d\u540c\u5206\u5340\u4e0d\u50c5\u53ef\u4ee5\u589e\u9032 Query \u7684\u6548\u80fd\uff0c\u540c\u6642\u53ef\u4ee5\u6e1b\u5c11\u6bcf\u6b21 Query \u8b80\u53d6\u7684\u8cc7\u6599\u91cf\u4f86\u6e1b\u5c11\u76f8\u95dc\u6210\u672c\u652f\u51fa\u3002\u800c\u7576\u65b0\u8cc7\u6599\u5beb\u5165\u5206\u5340\u8cc7\u6599\u8868\u6642\u4e5f\u6703\u81ea\u52d5\u6839\u64da\u5206\u5340\u898f\u5247\u4f86\u5beb\u5165\u9069\u5408\u7684\u5206\u5340\u3002<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"654\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/BigQuery_Explained_Storage_5.max-1400x1400-1-1024x654.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery Partitioned Table\" class=\"wp-image-20873 lazyload\" \/><noscript><img decoding=\"async\" width=\"1024\" height=\"654\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/BigQuery_Explained_Storage_5.max-1400x1400-1-1024x654.png\" alt=\"BigQuery Partitioned Table\" class=\"wp-image-20873\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/BigQuery_Explained_Storage_5.max-1400x1400-1-1024x654.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/BigQuery_Explained_Storage_5.max-1400x1400-1-300x192.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/BigQuery_Explained_Storage_5.max-1400x1400-1-768x490.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/BigQuery_Explained_Storage_5.max-1400x1400-1.png 1400w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/cloud.google.com\/blog\/topics\/developers-practitioners\/bigquery-explained-storage-overview\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u5716\u7247\u4f86\u6e90\">\u5716\u7247\u4f86\u6e90<\/a><\/figcaption><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 BigQuery \u4e2d\u53ef\u4ee5\u6839\u64da\u4ee5\u4e0b\u8cc7\u6599\u6b04\u4f4d\u5c07\u8cc7\u6599\u8868\u9032\u884c\u5206\u5340\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6642\u9593\u6b04\u4f4d<\/strong><\/li>\n\n\n\n<li><strong>\u8cc7\u6599\u532f\u5165\u6642\u9593<\/strong><\/li>\n\n\n\n<li><strong>\u6574\u6578\u6b04\u4f4d<\/strong><\/li>\n<\/ol>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/partitioned-tables#date_timestamp_partitioned_tables\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u4e00\u3001\u4ee5\u6642\u9593\u6b04\u4f4d\u9032\u884c\u5206\u5340\">\u4e00\u3001\u4ee5\u6642\u9593\u6b04\u4f4d\u9032\u884c\u5206\u5340<\/a><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8cc7\u6599\u8868\u6839\u64da TIMESTAMP, DATE, or DATETIME \u6b04\u4f4d\u4f86\u9032\u884c\u5206\u5340\u3002\u5c0d\u65bc TIMESTAMP, DATE \u7684\u6b04\u4f4d\u53ef\u4ee5\u4f7f\u7528\u5e74\u3001\u6708\u3001\u65e5\u3001\u5c0f\u6642\u7684\u65b9\u5f0f\u4f86\u5c07\u8cc7\u6599\u8868\u9032\u884c\u5206\u5340\uff0c\u800c DATETIME \u6b04\u4f4d\u53ef\u4ee5\u4f7f\u7528\u5e74\u3001\u6708\u3001\u65e5\u7684\u65b9\u5f0f\u4f86\u5c07\u8cc7\u6599\u8868\u9032\u884c\u5206\u5340\u3002\u4e0b\u5716\u5229\u7528 DATETIME \u6b04\u4f4d\u548c Monthly \u7684\u65b9\u5f0f\u4f86\u5207\u5272\u8cc7\u6599\u8868\uff1a<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"261\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-07-\u4e0b\u53485.44.36-1024x261.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery Partitioned table \u4ee5\u6642\u9593\u6b04\u4f4d\u9032\u884c\u5206\u5340\" class=\"wp-image-20867 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"261\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-07-\u4e0b\u53485.44.36-1024x261.png\" alt=\"BigQuery Partitioned table \u4ee5\u6642\u9593\u6b04\u4f4d\u9032\u884c\u5206\u5340\" class=\"wp-image-20867\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-07-\u4e0b\u53485.44.36-1024x261.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-07-\u4e0b\u53485.44.36-300x76.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-07-\u4e0b\u53485.44.36-768x196.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-07-\u4e0b\u53485.44.36-1536x392.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-07-\u4e0b\u53485.44.36.png 1726w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/partitioned-tables#date_timestamp_partitioned_tables\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u5716\u7247\u4f86\u6e90\">\u5716\u7247\u4f86\u6e90<\/a><\/figcaption><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u5916\uff0cBigQuery \u4e5f\u6703\u81ea\u52d5\u5275\u5efa\u5169\u500b\u984d\u5916\u7684\u5206\u5340\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>__NULL__\uff1a\u5305\u542b\u4e86\u6642\u9593\u6b04\u4f4d\u70banull\u7684\u8cc7\u6599\u3002<\/li>\n\n\n\n<li>__UNPARTITIONED__\uff1a\u5305\u542b\u4e86\u6b04\u4f4d\u6642\u9593\u9ede\u5728 1960-01-01 \u4e4b\u524d\u6216\u662f 2159-12-31 \u4e4b\u5f8c\u7684\u8cc7\u6599\u3002<\/li>\n<\/ol>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/partitioned-tables#ingestion_time\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u4e8c\u3001\">\u4e8c\u3001<\/a><\/strong><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/partitioned-tables#ingestion_time\"><strong>\u4ee5\u8cc7\u6599\u532f\u5165\u6642\u9593\u9032\u884c\u5206\u5340<\/strong><\/a><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8cc7\u6599\u8868\u6839\u64da\u8cc7\u6599\u532f\u5165 BigQuery \u7684 timestamp \u4f86\u9032\u884c\u5206\u5340\u3002\u540c\u6a23\u5730\uff0c\u53ef\u4ee5\u6839\u64da\u5e74\u3001\u6708\u3001\u65e5\u3001\u5c0f\u6642\u7684\u65b9\u5f0f\u4f86\u5c07\u8cc7\u6599\u8868\u9032\u884c\u5206\u5340\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0d\u65bc\u4ee5\u8cc7\u6599\u532f\u5165\u6642\u9593\u8fd1\u7fd2\u5206\u5340\u7684\u8cc7\u6599\u8868\uff0cBigQuery \u6703\u81ea\u52d5\u65b0\u589e\u4e00\u500b pseudocolumn\uff1a_PARTITIONTIME \u4f86\u5c07\u532f\u5165\u6642\u9593\u9ede\u8f49\u63db\u70ba\u5206\u5340\u6642\u9593\u9ede\uff0c\u5982\u4e0b\u5716\u6240\u793a\uff1a<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"260\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-08-\u4e0a\u534810.43.06-1024x260.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery Partitioned table \u5df2\u8cc7\u6599\u532f\u5165\u6642\u9593\u9032\u884c\u5206\u5340\" class=\"wp-image-20870 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"260\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-08-\u4e0a\u534810.43.06-1024x260.png\" alt=\"BigQuery Partitioned table \u5df2\u8cc7\u6599\u532f\u5165\u6642\u9593\u9032\u884c\u5206\u5340\" class=\"wp-image-20870\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-08-\u4e0a\u534810.43.06-1024x260.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-08-\u4e0a\u534810.43.06-300x76.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-08-\u4e0a\u534810.43.06-768x195.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-08-\u4e0a\u534810.43.06-1536x391.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/\u622a\u5716-2022-06-08-\u4e0a\u534810.43.06.png 1714w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/partitioned-tables#ingestion_time\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u5716\u7247\u4f86\u6e90\">\u5716\u7247\u4f86\u6e90<\/a><\/figcaption><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u7531\u65bc\u9019\u500b partition table \u662f\u6839\u64da\u6bcf\u5c0f\u6642\u4f86\u9032\u884c\u5206\u5340\uff0c\u6240\u4ee5\u5728 _PARTITIONTIM E\u6b04\u4f4d\u986f\u793a\u7684\u662f\u6bcf\u5c0f\u6642\u7684\u5206\u5340\u6642\u9593\u9ede\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c0d\u65bc\u6642\u9593\u55ae\u4f4d\u5206\u5340\u8868\u6216\u662f\u532f\u5165\u6642\u9593\u5206\u5340\u8868\u8a72\u5982\u9078\u64c7\u7528\u4ec0\u9ebc\u6a23\u7684\u6642\u9593\u55ae\u4f4d\uff08\u5c0f\u6642\u3001\u65e5\u3001\u6708\u3001\u5e74\uff09\u9032\u884c\u5207\u5272\uff0c\u53ef\u4ee5\u53c3\u8003\u4ee5\u4e0b\u5efa\u8b70\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4ee5\u5929\u70ba\u55ae\u4f4d\uff08Daily Partitioning\uff09\u662f\u9810\u8a2d\u7684\u5207\u5272\u65b9\u6cd5\uff0c\u9069\u7528\u65bc\u7576\u8cc7\u6599\u6642\u9593\u9ede\u6a6b\u8de8\u8a31\u591a\u4e0d\u540c\u65e5\u671f\u3002<\/li>\n\n\n\n<li>\u4ee5\u5c0f\u6642\u70ba\u55ae\u4f4d\uff08Hourly Partitioning\uff09\u7684\u5207\u5272\u9069\u5408\u5728\u77ed\u671f\u7684\u6642\u9593\u5167\uff08e.g., 6\u500b\u6708\u5167\uff09\u6709\u5927\u91cf\u7684\u8cc7\u6599\u9ede\u3002\u4f46\u5fc5\u9808\u6ce8\u610f\u7684\u662f\u4e00\u500b\u5206\u5340\u8cc7\u6599\u8868\u6700\u591a\u53ea\u80fd\u6709<a href=\"https:\/\/cloud.google.com\/bigquery\/quotas#partitioned_tables\">4000\u500b\u5206\u5340<\/a>\u3002<\/li>\n\n\n\n<li>\u4ee5\u6708\u6216\u662f\u5e74\u70ba\u55ae\u4f4d\uff08Monthly or Yearly Partitioning\uff09\u7684\u5207\u5272\u9069\u5408\u8cc7\u6599\u6642\u9593\u9ede\u7bc4\u570d\u5f88\u5ee3\uff08e.g., \u8d85\u904e500\u5929\uff09\u4f46\u6bcf\u65e5\u7684\u6642\u9593\u9ede\u76f8\u5c0d\u5c11\u7684\u8cc7\u6599\u8868\u3002<\/li>\n<\/ol>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/partitioned-tables#integer_range\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u4e09\u3001\u4ee5\u6574\u6578\u6b04\u4f4d\u9032\u884c\u5206\u5340\">\u4e09\u3001\u4ee5\u6574\u6578\u6b04\u4f4d\u9032\u884c\u5206\u5340<\/a><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8cc7\u6599\u8868\u6839\u64da\u6574\u6578\u6b04\u4f4d\u4f86\u9032\u884c\u5206\u5340\u3002\u4ee5\u9019\u7a2e\u65b9\u5f0f\u9032\u884c\u5206\u5340\u6642\uff0c\u5fc5\u9808\u63d0\u4f9b\u4ee5\u4e0b\u8cc7\u8a0a\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6574\u6578\u5217\u7684\u540d\u7a31<\/strong><\/li>\n\n\n\n<li><strong>\u958b\u59cb\u6578\u503c<\/strong><\/li>\n\n\n\n<li><strong>\u7d50\u675f\u6578\u503c<\/strong><\/li>\n\n\n\n<li><strong>\u9593\u9694<\/strong><\/li>\n<\/ol>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u8209\u4f8b\u4f86\u8aaa\uff0c\u82e5\u7d66\u5b9a user_id \u70ba\u6574\u6578\u5217\u3001\u958b\u59cb\u6578\u503c\u70ba1\u3001\u7d50\u675f\u6578\u503c\u70ba100\u3001\u9593\u9694\u70ba10\uff0c\u5247\u7b2c\u4e00\u500b\u5206\u5340\u70ba user_id 1-10\u3001\u7b2c\u4e8c\u500b\u5206\u5340\u70ba user_id 11-20\u3001\u7b2c\u4e09\u500b\u5206\u5340\u70ba user_id 21-30\uff0c\u4ee5\u6b64\u985e\u63a8\u3002\u82e5\u67d0\u500b\u8cc7\u6599\u9ede\u7684 user_id \u4e0d\u5728 1-100 \u7684\u5340\u9593\u5167\uff0c\u5247\u5176\u6703\u88ab\u5206\u6d3e\u5230 __UNPARTITIONED__ \u7684\u5206\u5340\uff1b\u82e5\u67d0\u8cc7\u6599\u9ede user_id \u70ba null\uff0c\u5247\u5176\u6703\u88ab\u5206\u6d3e\u5230 __NULL__ \u7684\u5206\u5340\u3002<\/p>\n\n\n\n<div style=\"height:43px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/creating-partitioned-tables\"><strong>\u5982\u4f55\u5728 BigQuery \u4e2d\u5efa\u7acbPartitioned Table?<\/strong><\/a><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 BigQuery \u4e2d Partitioned Table \u5fc5\u9808\u5f9e\u4e00\u958b\u59cb\u5c31\u5efa\u7acb\uff0c\u5efa\u7acb Partitioned Table \u548c\u4e00\u822c Table \u5728\u8a9e\u6cd5\u4e0a\u5927\u540c\u5c0f\u7570\u3002Partitioned Table \u5fc5\u9808\u5728 PARTITION BY \u52a0\u5165\u4ee5\u54ea\u500b column \u70ba\u57fa\u6e96\u4f86\u9032\u884c\u5206\u5340\uff0c\u4e26\u4e14\u5728 OPTIONS \u9078\u64c7\u662f\u5426\u8a2d\u5b9a<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/managing-partitioned-tables#partition-expiration\">\u5206\u5340\u5931\u6548\u6642\u9593<\/a>\u548c\u662f\u5426\u8a2d\u5b9a <a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/managing-partitioned-tables#require-filter\">partition filter requirements<\/a>\uff08\u4e5f\u5c31\u662f\u5c0dtable \u9032\u884c\u67e5\u8a62\u90fd\u5fc5\u8a31\u4f7f\u7528 \u201cwhere\u201d \u4f86\u904e\u6ffe partition \u7684\u6b04\u4f4d\uff09\u3002<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">1.<strong>\u4ee5\u6642\u9593\u6b04\u4f4d\u9032\u884c\u5206\u5340\uff1a<\/strong><\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">CREATE TABLE<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;mydataset.newtable (transaction_id INT64, transaction_date DATE)<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">PARTITION BY<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;transaction_date<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">OPTIONS<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;(partition_expiration_days=3,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;require_partition_filter=true)<\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">2.<strong>\u4ee5\u532f\u5165\u6642\u9593\u9032\u884c\u5206\u5340\uff1a<\/strong><\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">CREATE TABLE<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;mydataset.newtable (transaction_id INT64)<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">PARTITION BY<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;_PARTITIONDATE<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">OPTIONS(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;partition_expiration_days=3,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;require_partition_filter=true)<\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">3.<strong>\u4ee5\u6574\u6578\u6b04\u4f4d\u9032\u884c\u5206\u5340\uff1a<\/strong><\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">CREATE TABLE<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;mydataset.newtable (customer_id INT64, date1 DATE)<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">PARTITION BY<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;RANGE_BUCKET(customer_id, GENERATE_ARRAY(0, 100, 10))<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">OPTIONS(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;require_partition_filter=true)<\/p>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u5916\uff0cBigQuery \u4e26<strong>\u4e0d\u652f\u63f4<\/strong>\u5c07\u4e00\u822c Table \u8f49\u63db\u70ba Partitioned Table\uff0c\u5fc5\u9808\u91cd\u65b0\u5efa\u7acb\u4e00\u500b\u65b0\u7684Partitioned Table\uff1a<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">CREATE TABLE<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;mydataset.newtable (transaction_id INT64, transaction_date DATE)<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">PARTITION BY<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;transaction_date<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">AS&nbsp;<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">SELECT<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;transaction_id, transaction_date&nbsp;<\/p>\n\n\n\n<p class=\"has-text-color wp-block-paragraph\" style=\"color:#ff9e1b\">FROM&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;mydataset.mytable<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>BigQuery \u7279\u6b8a\u8cc7\u6599\u8868- Clustered Table<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u9664\u4e86 Partitioned Table \u4e4b\u5916\uff0cBigQuery \u4e2d\u7684 Clustered Table \u540c\u6a23\u5730\u53ef\u4ee5\u63d0\u5347\u67e5\u8a62\u901f\u5ea6\u4e26\u6e1b\u5c11\u6210\u672c\u82b1\u8cbb\u3002Clustered table \u4e2d\u8cc7\u6599\u6703\u81ea\u52d5\u6839\u64da\u4e00\u500b\u6216\u591a\u500b\u6307\u5b9a\u6b04\u4f4d\u4e2d\u7684\u503c\u4f86\u9032\u884c\u91cd\u65b0\u6392\u5e8f\u3002\u7576\u67e5\u8a62\u4e2d\u7684<strong>\u904e\u6ffe\u689d\u4ef6<\/strong>\u6216<strong>\u805a\u5408\u904b\u7b97<\/strong>\u5305\u542b\u4e86\u6307\u5b9a\u6b04\u4f4d\u6642\uff0cBigQuery \u53ef\u4ee5\u907f\u514d\u6383\u63cf\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3002\u82e5\u4f7f\u7528\u591a\u500b\u6307\u5b9a\u6b04\u4f4d\u4f86\u5275\u5efa\u5206\u7fa4\u8cc7\u6599\u8868\u6642<strong>\u6307\u5b9a\u6b04\u4f4d\u7684\u9806\u5e8f\u6c7a\u5b9a\u4e86\u6578\u64da\u7684\u6392\u5e8f\u9806\u5e8f<\/strong>\uff0c\u56e0\u6b64\u5fc5\u9808\u7279\u5225\u6ce8\u610f\u6307\u5b9a\u6b04\u4f4d\u7684\u9806\u5e8f\u3002\u82e5\u6709\u65b0\u7684\u8cc7\u6599\u5beb\u5165 Clustered Table\uff0c BigQuery \u5c07\u6703\u81ea\u52d5\u6839\u64da\u5176\u6307\u5b9a\u6b04\u4f4d\u7684\u503c\u9032\u884c\u91cd\u65b0\u6392\u5e8f (<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/clustered-tables#automatic_re-clustering\">Auto re-clustering<\/a>)\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u4f86\u8aaa\uff0c\u9ad8\u57fa\u6578(High Cardinality)\u6216\u975e\u6642\u9593\u6b04\u4f4d\u9069\u5408\u7576\u4f5c Clustered Table \u7684\u6307\u5b9a\u6b04\u4f4d\u3002\u8acb\u53c3\u8003\u4e0b\u5716\uff0c\u9664\u4e86\u4f7f\u7528\u6642\u9593\u6b04\u4f4d\u9032\u884c\u5206\u5340\u4e5f\u540c\u6642\u4f7f\u7528Tags\u6b04\u4f4d\u4f86\u70ba\u4f86\u9032\u884c cluster\u3002\u53ef\u4ee5\u770b\u5230\u8cc7\u6599\u8868\u5728\u9032\u884c cluster \u5f8c\uff0c\u5728 Tags \u6b04\u4f4d\u4e2d\u76f8\u8fd1\u7684\u503c\u6703\u88ab\u6392\u5e8f\u518d\u4e00\u8d77\u3002<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/GCP-blog-1-1024x640.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery Clustered table\" class=\"wp-image-20864 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"640\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/GCP-blog-1-1024x640.png\" alt=\"BigQuery Clustered table\" class=\"wp-image-20864\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/GCP-blog-1-1024x640.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/GCP-blog-1-300x188.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/GCP-blog-1-768x480.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/GCP-blog-1.png 1400w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><figcaption class=\"wp-element-caption\"><a href=\"https:\/\/cloud.google.com\/blog\/topics\/developers-practitioners\/bigquery-explained-storage-overview\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u5716\u7247\u4f86\u6e90\">\u5716\u7247\u4f86\u6e90<\/a><\/figcaption><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u6b64\u5916\uff0c\u82e5\u67e5\u8a62\u4e00\u500b\u5c0f\u65bc 1GB \u8cc7\u6599\u8868\u6216\u5206\u5340\u6642\uff0cClustered Table \u5728\u6548\u80fd\u4e0a\u4e26\u4e0d\u6703\u6709\u592a\u986f\u8457\u7684\u9032\u6b65\u3002<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/clustered-tables#when_to_use_clustering\" target=\"_blank\" rel=\"noreferrer noopener\" title=\"\u5982\u4f55\u5728 Big Query \u4e2d\u5efa\u7acb Clustered Table?\">\u5982\u4f55\u5728 Big Query \u4e2d\u5efa\u7acb Clustered Table?<\/a><\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">BigQuery\u652f\u63f4<a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/creating-clustered-tables#creating-clustered-tables\">\u4e0d\u540c\u65b9\u6cd5<\/a>\u4f86\u5efa\u7acbClustered Table\uff0c\u57fa\u672c SQL \u8a9e\u6cd5\u53ef\u4ee5\u53c3\u8003\u4ee5\u4e0b\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CREATE TABLE mydataset.myclusteredtable<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">(<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;customer_id STRING,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;transaction_amount NUMERIC<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">CLUSTER BY<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;customer_id<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">OPTIONS (<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;&nbsp;description=&#8221;a table clustered by customer_id&#8221;)<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>\u6bd4\u8f03 Partitioned Table \u8207 Clustered Table<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u4f86\u8aaa\uff0c\u4e0d\u8ad6\u662f Partitioned Table \u6216\u662f Clustered Table \u90fd\u53ef\u4ee5\u589e\u9032\u8cc7\u6599\u67e5\u8a62\u7684\u6548\u7387\u4e26\u6e1b\u5c11\u76f8\u5c0d\u61c9\u6210\u672c\u8cbb\u7528\u7684\u65b9\u6cd5\u3002\u4f46 Partitioned Table \u548c Clustered Table \u5206\u5225\u6709\u5176\u9069\u7528\u7684\u60c5\u5883\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Partitioned Table<\/strong>\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u60a8\u60f3\u5728\u67e5\u8a62\u904b\u884c\u4e4b\u524d\u4e86\u89e3\u67e5\u8a62\u6210\u672c\u3002Partitioned Table \u5728\u9032\u884c Query \u524d\u6703\u5148\u6709 <a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/dry-run-queries\">Dry Run<\/a> \u4f86\u9032\u884c Partition pruning\uff0c\u56e0\u6b64\u53ef\u4ee5\u4e8b\u5148\u77e5\u9053\u67e5\u8a62\u6210\u672c\u3002\u800c Clustered pruning \u5247\u662f\u5728\u67e5\u8a62\u904b\u884c\u7576\u4e0b\u624d\u6703\u9032\u884c\uff0c\u6240\u4ee5\u7121\u6cd5\u4e8b\u524d\u638c\u63e1\u60f3\u95dc\u6210\u672c\u3002<\/li>\n\n\n\n<li>\u60a8\u9700\u8981 <a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/managing-partitioned-tables\">partition-level<\/a> \u7684\u7ba1\u7406\uff0c\u5982\u8a2d\u5b9a\u5206\u5340\u5931\u6548\u6642\u9593\u3001\u5c07\u8cc7\u6599\u5beb\u5165\u7279\u5b9a\u5206\u5340\u7b49\u3002<\/li>\n\n\n\n<li>\u60a8\u60f3\u8981\u9078\u64c7\u8cc7\u6599\u5207\u5272\u65b9\u6cd5\uff0c\u5982\u4ee5\u6642\u9593\u6b04\u4f4d\u6216\u662f\u6574\u6578\u6b04\u4f4d\u9032\u884c\u5206\u5340\u3002<\/li>\n<\/ol>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Clustered Table<\/strong>\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6c92\u6709\u56b4\u683c\u7684\u6210\u672c\u9650\u5236\uff0c\u53ef\u4ee5\u63a5\u53d7\u518d\u67e5\u8a62\u524d\u7684\u6210\u672c\u9810\u6e2c\u8aa4\u5dee\u3002<\/li>\n\n\n\n<li>\u60a8\u9700\u8981\u6bd4\u55ae\u7368\u4f7f\u7528 partitioned table \u66f4\u7d30\u7dfb\u7684\u4f86\u5207\u5272\u8cc7\u6599\u3002\u5728\u540c\u4e00\u6b04\u4f4d\u53ef\u4ee5\u540c\u6642\u9032\u884cpartitioning \u548c clustering\u3002<\/li>\n\n\n\n<li>\u60a8\u7684\u67e5\u8a62\u5e38\u5e38\u6703\u4f7f\u7528\u67d0\u4e9b\u7279\u5b9a\u7684\u6b04\u4f4d\u3002<\/li>\n\n\n\n<li>\u6307\u5b9a\u7684\u6b04\u4f4d\u64c1\u6709 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Cardinality_(SQL_statements)\">High Cardinality<\/a>\uff0c\u4e5f\u5c31\u662f\u5728\u6307\u5b9a\u6b04\u4f4d\u4e2d\u7684\u503c\u57fa\u672c\u4e0a\u4e0d\u91cd\u8907\u3002<\/li>\n<\/ol>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u9664\u4e86\u4ee5\u4e0a\u5404\u81ea\u9069\u7528\u7684\u60c5\u5883\uff0c\u60a8\u4e5f\u53ef\u4ee5\u65bc\u540c\u4e00\u5f35\u8cc7\u6599\u8868\u4e2d\u540c\u6642\u4f7f\u7528 partitioning \u548c clustering \u4f86\u9054\u5230\u66f4\u7cbe\u7d30\u7684\u8cc7\u6599\u6392\u5e8f\u3002\u8cc7\u6599\u9996\u5148\u6703\u9032\u884c partitioning \u7136\u5f8c\u5728\u6bcf\u4e00\u5340\u4e2d\u9032\u884c clustering\u3002\u53e6\u4e00\u65b9\u9762\uff0c\u7531\u65bc\u5728\u67e5\u8a62\u524d\u53ea\u6703\u986f\u793a\u5728 partition pruning \u4e4b\u5f8c\u7684\u6210\u672c\uff0c\u6240\u4ee5<strong>\u5be6\u969b\u67e5\u8a62\u6210\u672c\u53ef\u80fd\u6703\u6bd4\u9810\u5148\u986f\u793a\u7684\u66f4\u4f4e<\/strong>\u3002<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>BigQuery<\/strong> <strong>\u5be6\u6230\u6e2c\u8a66<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u5011\u5229\u7528 BigQuery \u516c\u958b\u8cc7\u6599\u96c6\u4e2d\u7684 iowa_liquor_sales \u4f86\u9032\u884c\u6e2c\u8a66\u3002\u9019\u662f\u4e00\u500b\u9152\u5546\u7684\u92b7\u552e\u8cc7\u6599\uff0c\u5176\u4e2d\u5305\u542b\u4e86\u92b7\u552e\u65e5\u671f\uff08YYYY\/MM\/DD\uff09\u3001\u5e97\u5bb6id\u3001\u5e97\u5bb6\u540d\u7a31\u3001\u57ce\u5e02\u3001\u5546\u54c1\u540d\u7a31\u3001\u6578\u91cf\u7b49\u6b04\u4f4d\u3002Table \u5927\u5c0f\u70ba 6.28GB\u3002<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/5-1024x559.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20917 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"559\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/5-1024x559.png\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20917\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/5-1024x559.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/5-300x164.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/5-768x419.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/5-1536x838.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/5-2048x1118.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"560\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/6-1024x560.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20920 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"560\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/6-1024x560.png\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20920\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/6-1024x560.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/6-300x164.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/6-768x420.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/6-1536x840.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/6-2048x1120.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8861\u91cf\u7684\u6307\u6a19\u65b9\u9762\uff0c\u4e3b\u8981\u6703\u4ee5 Elpased time \u548c Slot time \u4f5c\u70ba\u6bd4\u8f03\u6307\u6a19\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Elapsed Time<\/strong>\uff1a&nbsp; BigQuery \u57f7\u884c\u67e5\u8a62\u6240\u82b1\u8cbb\u7684\u7e3d\u6642\u9593\u3002<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/cloud.google.com\/bigquery\/docs\/slots\"><strong>Slot Time<\/strong><\/a>\uff1avCPU \u57f7\u884c\u67e5\u8a62\u6240\u7528\u7684\u7e3d\u6642\u9593\u3002<\/li>\n<\/ul>\n\n\n\n<div style=\"height:18px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">BigQuery \u662f\u57fa\u65bc\u4e00\u500b\u5206\u5e03\u5f0f\u5e73\u884c\u904b\u7b97\u7684\u67b6\u69cb\uff0c\u6240\u4ee5<strong>\u57fa\u672c\u4e0a<\/strong>\u4f86\u8aaa slot time \u6703\u5927\u65bc elapsed time\u3002\u53ef\u4ee5\u628a slot time \u7684\u95dc\u4fc2\u60f3\u6210\u662f\u300c\u4eba\u5e74\u300d\u6216\u662f\u300c\u4eba\u5929\u300d\u7684\u6982\u5ff5\u3002\u4f46\u5c0d\u65bc\u898f\u6a21\u8f03\u5c0f\u7684\u67e5\u8a62\uff0c\u5076\u723eelapsed time\u6703\u5927\u65bc slot time\uff0c\u662f\u56e0\u70ba BigQuery \u9700\u8981\u4e00\u4e9b\u6642\u9593\u4f86\u6574\u5408\u904b\u7b97\u7d50\u679c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u8ad6\u662f Elpased time \u6216\u662f Slot time\uff0c\u503c\u8d8a\u5927\u5c31\u4ee3\u8868\u8457\u67e5\u8a62\u9700\u8981\u66f4\u591a\u6642\u9593\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8acb\u6ce8\u610f\uff1a\u5728\u9032\u884c\u6e2c\u8a66\u524d\uff0c\u8acb\u5148\u5728Query Settings\u4e2d\u5c07\u5feb\u53d6\u7684\u529f\u80fd\u95dc\u9589\u624d\u80fd\u6b63\u78ba\u8861\u91cf\u6548\u80fd\u7684\u5dee\u7570\u3002<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"560\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/7-1024x560.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20923 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"560\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/7-1024x560.png\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20923\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/7-1024x560.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/7-300x164.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/7-768x420.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/7-1536x840.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/7-2048x1120.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u9996\u5148\uff0c\u6211\u5011\u91dd\u5c0diowa_liquor_sales\u9032\u884c\u4e00\u500b\u7c21\u55ae\u7684 Query\uff0c\u67e5\u770b\u5728 2014-01\u201301 \u81f3 2020-01-01\u9593\u4e14\u57ce\u5e02\u6b04\u4f4d\u70ba \u201cDubuque\u201d \u7684\u8cc7\u6599\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"562\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/8-1024x562.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20926 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"562\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/8-1024x562.png\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20926\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/8-1024x562.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/8-300x165.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/8-768x421.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/8-1536x843.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/8-2048x1124.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<div style=\"height:21px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u770b\u5230\u5728 Execution Details \u4e2d\u770b\u5230 Elapsed time \u70ba4\u79d2\u3001slot time \u70ba3\u79d2\uff0c\u4e14\u9700\u8981\u6383\u63cf\u6574\u500b table\uff086.28GB\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u63a5\u8457\u6211\u5011\u5efa\u7acb\u4e00\u500b\u65b0\u7684 table\uff1aiowaliquor.sales_partitioned_clustered \u4e26\u91dd\u5c0d\u539f\u672c table \u4e2d\u7684 date \u6b04\u4f4d\u9032\u884c partitioning \u548c city \u6b04\u4f4d\u9032\u884c clustering\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"560\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/9-1024x560.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20929 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"560\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/9-1024x560.png\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20929\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/9-1024x560.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/9-300x164.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/9-768x420.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/9-1536x839.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/9-2048x1119.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u5efa\u7acb\u5b8c\u6210\u5f8c\uff0c\u91dd\u5c0d\u65b0\u7684 table \u5728\u9032\u884c\u76f8\u540c\u7684\u67e5\u8a62\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"563\" data-src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/10-1024x563.png\" src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20932 lazyload\" \/><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"563\" src=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/10-1024x563.png\" alt=\"BigQuery \u5be6\u6230\" class=\"wp-image-20932\" srcset=\"https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/10-1024x563.png 1024w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/10-300x165.png 300w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/10-768x422.png 768w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/10-1536x844.png 1536w, https:\/\/masterconcept.ai\/wp-content\/uploads\/2022\/06\/10-2048x1126.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/noscript><\/figure>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u770b\u5230 Elapsed time \u548c slot time \u5df2\u7d93\u964d\u81f3\u70ba2\u79d2\uff0c\u4e14\u53ea\u9700\u6383\u63cf 3.54GB \u7684\u8cc7\u6599\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u96d6\u7136\u9019\u6a23\u7684\u7d50\u679c\u5dee\u7570\u4e26\u4e0d\u5927\uff0c\u4f46\u8b49\u5be6\u4e86 table partitioning \u548c clustering \u78ba\u5be6\u53ef\u4ee5\u52a0\u901f query \u7684\u901f\u5ea6\uff0c\u4e26\u6e1b\u5c11 BigQuery \u6383\u63cf\u7684\u6578\u64da\u91cf\u3002\u82e5\u4eca\u5929\u662f\u4f7f\u7528\u8cc7\u6599\u91cf\u66f4\u5927\u7684 table\uff0c\u5176\u4e2d\u5dee\u8ddd\u5c07\u6703\u66f4\u660e\u986f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u770b\u5b8c\u9019\u7bc7\u6587\u7ae0\u76f8\u4fe1\u60a8\u5df2\u7d93\u4e86\u89e3\u4e86 Partitioned table \u548c Clustered table \u53ef\u4ee5\u70ba\u60a8\u5e36\u4f86\u7684\u512a\u52e2\u3002\u90a3\u5feb\u53bb\u8a66\u8a66\u770b\u5427\uff01<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-block-group-is-layout-constrained\" style=\"background-color:#f6f6f6\">\n<h2 class=\"wp-block-heading\">\u66f4\u591a Google Cloud \u6587\u7ae0\uff1a<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a 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href=\"https:\/\/cloud.google.com\/bigquery\/docs\/clustered-tables\">https:\/\/cloud.google.com\/bigquery\/docs\/clustered-tables<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/cloud.google.com\/blog\/topics\/developers-practitioners\/bigquery-explained-storage-overview\">https:\/\/cloud.google.com\/blog\/topics\/developers-practitioners\/bigquery-explained-storage-overview<\/a><\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n<div class=\"wp-block-post-author\"><div class=\"wp-block-post-author__avatar\"><img decoding=\"async\" data-src=\"https:\/\/secure.gravatar.com\/avatar\/489b4e6ad1092775f47244ce369b0d17bdea17a59af6b4ac1b7f04f562e8ba12?s=48&amp;d=mm&amp;r=g\" data-srcset=\"https:\/\/secure.gravatar.com\/avatar\/489b4e6ad1092775f47244ce369b0d17bdea17a59af6b4ac1b7f04f562e8ba12?s=96&amp;d=mm&amp;r=g 2x\" alt='' src=\"data:image\/gif;base64,R0lGODlhAQABAIAAAAAAAP\/\/\/yH5BAEAAAAALAAAAAABAAEAAAIBRAA7\"  class=\"avatar avatar-48 photo lazyload\" height='48' width='48' \/><noscript><img loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"https:\/\/secure.gravatar.com\/avatar\/489b4e6ad1092775f47244ce369b0d17bdea17a59af6b4ac1b7f04f562e8ba12?s=48&amp;d=mm&amp;r=g\" srcset=\"https:\/\/secure.gravatar.com\/avatar\/489b4e6ad1092775f47244ce369b0d17bdea17a59af6b4ac1b7f04f562e8ba12?s=96&amp;d=mm&amp;r=g 2x\" class=\"avatar avatar-48 photo\" height=\"48\" width=\"48\"><\/noscript><\/div><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\">Tommy Shum<\/p><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>\u96a8\u8457\u60a8\u7684\u696d\u52d9\u62d3\u5c55\uff0c\u8d8a\u4f86\u8d8a\u591a\u8cc7\u6599\u5c07\u6703\u88ab\u5132\u5b58\u5728 BigQuery \u5167\u3002\u5728\u904b\u7b97\u4e0a BigQuery 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