Bigquery Tag - Viblo https://viblo.asia/rss Sun* Inc. https://viblo.asia/logo_full.svg https://viblo.asia/logo_full.svg Bigquery Tag - Viblo https://viblo.asia/rss vi-vn 2026-10-20T14:45:54+07:00 <![CDATA[Google BigQuery - Bài học 30: Materialized Views – Tự động tính toán trước và làm mới dữ liệu tổng hợp không cần viết cronjob]]> https://viblo.asia/p/google-bigquery-bai-hoc-30-materialized-views-tu-dong-tinh-toan-truoc-va-lam-moi-du-lieu-tong-hop-khong-can-viet-cronjob-37LdeRk2Vov https://viblo.asia/p/google-bigquery-bai-hoc-30-materialized-views-tu-dong-tinh-toan-truoc-va-lam-moi-du-lieu-tong-hop-khong-can-viet-cronjob-37LdeRk2Vov Nguyen Hoang 2026-10-20 07:50:58 <![CDATA[Google BigQuery - Bài học 29: BigQuery BI Engine – Tăng tốc độ phản hồi truy vấn dưới 1 giây với bộ nhớ đệm In-memory thông minh]]> https://viblo.asia/p/google-bigquery-bai-hoc-29-bigquery-bi-engine-tang-toc-do-phan-hoi-truy-van-duoi-1-giay-voi-bo-nho-dem-in-memory-thong-minh-kY4gDN6OJAe https://viblo.asia/p/google-bigquery-bai-hoc-29-bigquery-bi-engine-tang-toc-do-phan-hoi-truy-van-duoi-1-giay-voi-bo-nho-dem-in-memory-thong-minh-kY4gDN6OJAe Nguyen Hoang 2026-10-20 07:50:51 <![CDATA[Google BigQuery - Bài học 28: Đọc hiểu Execution Plan (Query Plan Explanation) – Phân tích các Stage, Slot time consumed và phát hiện nút thắt cổ chai]]> https://viblo.asia/p/google-bigquery-bai-hoc-28-doc-hieu-execution-plan-query-plan-explanation-phan-tich-cac-stage-slot-time-consumed-va-phat-hien-nut-that-co-chai-gjLN0ZPP432 https://viblo.asia/p/google-bigquery-bai-hoc-28-doc-hieu-execution-plan-query-plan-explanation-phan-tich-cac-stage-slot-time-consumed-va-phat-hien-nut-that-co-chai-gjLN0ZPP432 Nguyen Hoang 2026-10-20 07:50:43 <![CDATA[Google BigQuery - Bài học 27: Table Clustering (Phân cụm bảng) – Sắp xếp dữ liệu đa chiều để cắt giảm chi phí quét tối đa]]> https://viblo.asia/p/google-bigquery-bai-hoc-27-table-clustering-phan-cum-bang-sap-xep-du-lieu-da-chieu-de-cat-giam-chi-phi-quet-toi-da-ZoJjej9E4Y7 https://viblo.asia/p/google-bigquery-bai-hoc-27-table-clustering-phan-cum-bang-sap-xep-du-lieu-da-chieu-de-cat-giam-chi-phi-quet-toi-da-ZoJjej9E4Y7 Nguyen Hoang 2026-10-20 07:50:37 <![CDATA[Google BigQuery - Bài học 26: Table Partitioning (Phân vùng bảng) – Chiến lược chia bảng theo Thời gian và Số nguyên]]> https://viblo.asia/p/google-bigquery-bai-hoc-26-table-partitioning-phan-vung-bang-chien-luoc-chia-bang-theo-thoi-gian-va-so-nguyen-QyJKzWN54Me https://viblo.asia/p/google-bigquery-bai-hoc-26-table-partitioning-phan-vung-bang-chien-luoc-chia-bang-theo-thoi-gian-va-so-nguyen-QyJKzWN54Me Nguyen Hoang 2026-10-20 07:50:28 <![CDATA[Google BigQuery - Bài học 25: Table Clones & Table Snapshots – Sao lưu dữ liệu quy mô lớn với chi phí lưu trữ gần như bằng 0 (Zero-copy)]]> https://viblo.asia/p/google-bigquery-bai-hoc-25-table-clones-table-snapshots-sao-luu-du-lieu-quy-mo-lon-voi-chi-phi-luu-tru-gan-nhu-bang-0-zero-copy-2vJPd0PMJeK https://viblo.asia/p/google-bigquery-bai-hoc-25-table-clones-table-snapshots-sao-luu-du-lieu-quy-mo-lon-voi-chi-phi-luu-tru-gan-nhu-bang-0-zero-copy-2vJPd0PMJeK Nguyen Hoang 2026-10-20 00:37:36 <![CDATA[Google BigQuery - Bài học 24: Time Travel & Fail-safe – Cách "quay ngược thời gian" cứu dữ liệu bị xóa nh릅 hoặc UPDATE sai trong vòng 7 ngày]]> https://viblo.asia/p/google-bigquery-bai-hoc-24-time-travel-fail-safe-cach-quay-nguoc-thoi-gian-cuu-du-lieu-bi-xoa-nh-hoac-update-sai-trong-vong-7-ngay-ZjJYWRMOVOE https://viblo.asia/p/google-bigquery-bai-hoc-24-time-travel-fail-safe-cach-quay-nguoc-thoi-gian-cuu-du-lieu-bi-xoa-nh-hoac-update-sai-trong-vong-7-ngay-ZjJYWRMOVOE Nguyen Hoang 2026-10-20 00:37:27 <![CDATA[Google BigQuery - Bài học 23: BigQuery GIS (Geospatial Analytics) – Kiểu dữ liệu GEOGRAPHY và bài toán định vị Logistics]]> https://viblo.asia/p/google-bigquery-bai-hoc-23-bigquery-gis-geospatial-analytics-kieu-du-lieu-geography-va-bai-toan-dinh-vi-logistics-8X4EjWlBJN2 https://viblo.asia/p/google-bigquery-bai-hoc-23-bigquery-gis-geospatial-analytics-kieu-du-lieu-geography-va-bai-toan-dinh-vi-logistics-8X4EjWlBJN2 Nguyen Hoang 2026-10-20 00:37:20 <![CDATA[Google BigQuery - Bài học 22: Remote Functions – Gọi trực tiếp API bên ngoài (Cloud Run / Cloud Functions) từ trong câu lệnh SQL]]> https://viblo.asia/p/google-bigquery-bai-hoc-22-remote-functions-goi-truc-tiep-api-ben-ngoai-cloud-run-cloud-functions-tu-trong-cau-lenh-sql-G24B8W1WLz3 https://viblo.asia/p/google-bigquery-bai-hoc-22-remote-functions-goi-truc-tiep-api-ben-ngoai-cloud-run-cloud-functions-tu-trong-cau-lenh-sql-G24B8W1WLz3 Nguyen Hoang 2026-10-20 00:37:14 <![CDATA[Google BigQuery - Bài học 21: User-Defined Functions (UDFs) bằng SQL & JavaScript – Viết hàm xử lý logic tùy chỉnh ngay trong câu truy vấn]]> https://viblo.asia/p/google-bigquery-bai-hoc-21-user-defined-functions-udfs-bang-sql-javascript-viet-ham-xu-ly-logic-tuy-chinh-ngay-trong-cau-truy-van-RlL5eOMPLbB https://viblo.asia/p/google-bigquery-bai-hoc-21-user-defined-functions-udfs-bang-sql-javascript-viet-ham-xu-ly-logic-tuy-chinh-ngay-trong-cau-truy-van-RlL5eOMPLbB Nguyen Hoang 2026-10-20 00:37:07 <![CDATA[Google BigQuery - Bài học 20: Đóng gói Stored Procedure và Xây dựng "Áo giáp" chống lỗi ETL]]> https://viblo.asia/p/google-bigquery-bai-hoc-20-dong-goi-stored-procedure-va-xay-dung-ao-giap-chong-loi-etl-7Z4DEWPyJnX https://viblo.asia/p/google-bigquery-bai-hoc-20-dong-goi-stored-procedure-va-xay-dung-ao-giap-chong-loi-etl-7Z4DEWPyJnX Nguyen Hoang 2026-10-19 06:38:20 <![CDATA[Google BigQuery - Bài học 19: Procedural SQL Scripting – Sử dụng biến, vòng lặp và điều kiện trong BigQuery]]> https://viblo.asia/p/google-bigquery-bai-hoc-19-procedural-sql-scripting-su-dung-bien-vong-lap-va-dieu-kien-trong-bigquery-yZJZlR7EVjm https://viblo.asia/p/google-bigquery-bai-hoc-19-procedural-sql-scripting-su-dung-bien-vong-lap-va-dieu-kien-trong-bigquery-yZJZlR7EVjm Nguyen Hoang 2026-10-19 06:37:01 <![CDATA[Google BigQuery - Bài học 18: Tối ưu hóa cú pháp SQL – Sử dụng CTE, Pivot/Unpivot, QUALIFY và các toán tử mở rộng]]> https://viblo.asia/p/google-bigquery-bai-hoc-18-toi-uu-hoa-cu-phap-sql-su-dung-cte-pivotunpivot-qualify-va-cac-toan-tu-mo-rong-OQJwzOlN4MP https://viblo.asia/p/google-bigquery-bai-hoc-18-toi-uu-hoa-cu-phap-sql-su-dung-cte-pivotunpivot-qualify-va-cac-toan-tu-mo-rong-OQJwzOlN4MP Nguyen Hoang 2026-10-19 06:36:43 <![CDATA[Google BigQuery - Bài học 17: Window Functions (Analytic Functions) - Phần 2: Phân tích xu hướng với LEAD(), LAG() và khung trượt (Sliding Window)]]> https://viblo.asia/p/google-bigquery-bai-hoc-17-window-functions-analytic-functions-phan-2-phan-tich-xu-huong-voi-lead-lag-va-khung-truot-sliding-window-oW4oejyoLml https://viblo.asia/p/google-bigquery-bai-hoc-17-window-functions-analytic-functions-phan-2-phan-tich-xu-huong-voi-lead-lag-va-khung-truot-sliding-window-oW4oejyoLml Nguyen Hoang 2026-10-19 06:36:26 <![CDATA[Google BigQuery - Bài học 16: Window Functions (Analytic Functions) - Phần 1: Thực chiến với ROW_NUMBER(), RANK(), DENSE_RANK() để khử trùng lặp (Deduplication)]]> https://viblo.asia/p/google-bigquery-bai-hoc-16-window-functions-analytic-functions-phan-1-thuc-chien-voi-row-number-rank-dense-rank-de-khu-trung-lap-deduplication-vbLbjRZmLnk https://viblo.asia/p/google-bigquery-bai-hoc-16-window-functions-analytic-functions-phan-1-thuc-chien-voi-row-number-rank-dense-rank-de-khu-trung-lap-deduplication-vbLbjRZmLnk Nguyen Hoang 2026-10-19 06:36:15 <![CDATA[Google BigQuery - Bài học 15: Xử lý Thời gian (Time-series) – Phân biệt TIMESTAMP, DATETIME, DATE và bài toán lệch múi giờ (Asia/Ho_Chi_Minh vs UTC)]]> https://viblo.asia/p/google-bigquery-bai-hoc-15-xu-ly-thoi-gian-time-series-phan-biet-timestamp-datetime-date-va-bai-toan-lech-mui-gio-asiaho-chi-minh-vs-utc-18J2eOzl4YK https://viblo.asia/p/google-bigquery-bai-hoc-15-xu-ly-thoi-gian-time-series-phan-biet-timestamp-datetime-date-va-bai-toan-lech-mui-gio-asiaho-chi-minh-vs-utc-18J2eOzl4YK Nguyen Hoang 2026-10-19 06:36:06 <![CDATA[Google BigQuery - Bài học 14: Xử lý chuỗi và biểu thức chính quy – Tối ưu REGEXP_CONTAINS, REGEXP_EXTRACT và các hàm tìm kiếm văn bản]]> https://viblo.asia/p/google-bigquery-bai-hoc-14-xu-ly-chuoi-va-bieu-thuc-chinh-quy-toi-uu-regexp-contains-regexp-extract-va-cac-ham-tim-kiem-van-ban-K9Vy8Ol9LQR https://viblo.asia/p/google-bigquery-bai-hoc-14-xu-ly-chuoi-va-bieu-thuc-chinh-quy-toi-uu-regexp-contains-regexp-extract-va-cac-ham-tim-kiem-van-ban-K9Vy8Ol9LQR Nguyen Hoang 2026-10-18 11:48:48 <![CDATA[Google BigQuery - Bài học 13: Xử lý kiểu dữ liệu JSON nguyên bản (Native JSON) – Truy xuất, đánh index và tối ưu hóa payload từ API/NoSQL đổ về]]> https://viblo.asia/p/google-bigquery-bai-hoc-13-xu-ly-kieu-du-lieu-json-nguyen-ban-native-json-truy-xuat-danh-index-va-toi-uu-hoa-payload-tu-apinosql-do-ve-wd43ExnKLX9 https://viblo.asia/p/google-bigquery-bai-hoc-13-xu-ly-kieu-du-lieu-json-nguyen-ban-native-json-truy-xuat-danh-index-va-toi-uu-hoa-payload-tu-apinosql-do-ve-wd43ExnKLX9 Nguyen Hoang 2026-10-18 11:48:41 <![CDATA[Google BigQuery - Bài học 12: Làm chủ UNNEST – Cách "trải phẳng" (Flatten) dữ liệu mảng và truy vấn siêu tốc]]> https://viblo.asia/p/google-bigquery-bai-hoc-12-lam-chu-unnest-cach-trai-phang-flatten-du-lieu-mang-va-truy-van-sieu-toc-y0VGwW8zVPA https://viblo.asia/p/google-bigquery-bai-hoc-12-lam-chu-unnest-cach-trai-phang-flatten-du-lieu-mang-va-truy-van-sieu-toc-y0VGwW8zVPA Nguyen Hoang 2026-10-18 11:48:34 <![CDATA[Google BigQuery - Bài học 11: Kiểu dữ liệu ARRAY và STRUCT – Vũ khí tối thượng thay thế quan hệ 1-N trong Data Warehouse]]> https://viblo.asia/p/google-bigquery-bai-hoc-11-kieu-du-lieu-array-va-struct-vu-khi-toi-thuong-thay-the-quan-he-1-n-trong-data-warehouse-PoL7eOGe4vk https://viblo.asia/p/google-bigquery-bai-hoc-11-kieu-du-lieu-array-va-struct-vu-khi-toi-thuong-thay-the-quan-he-1-n-trong-data-warehouse-PoL7eOGe4vk Nguyen Hoang 2026-10-18 11:48:27 <![CDATA[Google BigQuery - Bài học 10: Tư duy Denormalization – Tại sao trong BigQuery người ta lại thích gộp bảng thay vì tách bảng chuẩn hóa 3NF?]]> https://viblo.asia/p/google-bigquery-bai-hoc-10-tu-duy-denormalization-tai-sao-trong-bigquery-nguoi-ta-lai-thich-gop-bang-thay-vi-tach-bang-chuan-hoa-3nf-13VM9dp0VY7 https://viblo.asia/p/google-bigquery-bai-hoc-10-tu-duy-denormalization-tai-sao-trong-bigquery-nguoi-ta-lai-thich-gop-bang-thay-vi-tach-bang-chuan-hoa-3nf-13VM9dp0VY7 Nguyen Hoang 2026-10-18 08:50:44 <![CDATA[Google BigQuery - Bài học 9: GoogleSQL vs Legacy SQL – Các kiểu dữ liệu đặc trưng trong BigQuery và lưu ý về INT64, FLOAT64, NUMERIC]]> https://viblo.asia/p/google-bigquery-bai-hoc-9-googlesql-vs-legacy-sql-cac-kieu-du-lieu-dac-trung-trong-bigquery-va-luu-y-ve-int64-float64-numeric-lZL9XO1dJQK https://viblo.asia/p/google-bigquery-bai-hoc-9-googlesql-vs-legacy-sql-cac-kieu-du-lieu-dac-trung-trong-bigquery-va-luu-y-ve-int64-float64-numeric-lZL9XO1dJQK Nguyen Hoang 2026-10-18 08:50:31 <![CDATA[Google BigQuery - Bài học 8: BigQuery Sandbox & Public Datasets – Thực hành truy vấn tập dữ liệu tỷ dòng hoàn toàn miễn phí]]> https://viblo.asia/p/google-bigquery-bai-hoc-8-bigquery-sandbox-public-datasets-thuc-hanh-truy-van-tap-du-lieu-ty-dong-hoan-toan-mien-phi-oKLnqjR1JQO https://viblo.asia/p/google-bigquery-bai-hoc-8-bigquery-sandbox-public-datasets-thuc-hanh-truy-van-tap-du-lieu-ty-dong-hoan-toan-mien-phi-oKLnqjR1JQO Nguyen Hoang 2026-10-18 08:50:20 <![CDATA[Google BigQuery - Bài học 7: Khởi tạo môi trường làm việc – Sử dụng BigQuery Studio, bq CLI trên Terminal và cấu hình Google Cloud SDK]]> https://viblo.asia/p/google-bigquery-bai-hoc-7-khoi-tao-moi-truong-lam-viec-su-dung-bigquery-studio-bq-cli-tren-terminal-va-cau-hinh-google-cloud-sdk-gdJzvO3gJz5 https://viblo.asia/p/google-bigquery-bai-hoc-7-khoi-tao-moi-truong-lam-viec-su-dung-bigquery-studio-bq-cli-tren-terminal-va-cau-hinh-google-cloud-sdk-gdJzvO3gJz5 Nguyen Hoang 2026-10-18 08:50:12 <![CDATA[Google BigQuery - Bài học 6: Cơ chế tính phí (Pricing Model) – Phân biệt On-Demand (tính theo TB quét) và Editions/Slots (Autoscaling Compute) – Tránh "đốt tiền" oan]]> https://viblo.asia/p/google-bigquery-bai-hoc-6-co-che-tinh-phi-pricing-model-phan-biet-on-demand-tinh-theo-tb-quet-va-editionsslots-autoscaling-compute-tranh-dot-tien-oan-bA46801wLKv https://viblo.asia/p/google-bigquery-bai-hoc-6-co-che-tinh-phi-pricing-model-phan-biet-on-demand-tinh-theo-tb-quet-va-editionsslots-autoscaling-compute-tranh-dot-tien-oan-bA46801wLKv Nguyen Hoang 2026-10-18 08:49:59 <![CDATA[Google BigQuery - Bài học 5: Cấu trúc phân cấp tài nguyên – Quản lý Organization, Project, Dataset, Table và View chuẩn doanh nghiệp]]> https://viblo.asia/p/google-bigquery-bai-hoc-5-cau-truc-phan-cap-tai-nguyen-quan-ly-organization-project-dataset-table-va-view-chuan-doanh-nghiep-OXLA0WdvJGr https://viblo.asia/p/google-bigquery-bai-hoc-5-cau-truc-phan-cap-tai-nguyen-quan-ly-organization-project-dataset-table-va-view-chuan-doanh-nghiep-OXLA0WdvJGr Nguyen Hoang 2026-10-18 08:29:52 <![CDATA[Google BigQuery - Bài học 4: Mạng lưới Jupiter & Borg – Cách BigQuery luân chuyển dữ liệu nội bộ với băng thông hàng Petabit/giây]]> https://viblo.asia/p/google-bigquery-bai-hoc-4-mang-luoi-jupiter-borg-cach-bigquery-luan-chuyen-du-lieu-noi-bo-voi-bang-thong-hang-petabitgiay-kNLr3eAbVgA https://viblo.asia/p/google-bigquery-bai-hoc-4-mang-luoi-jupiter-borg-cach-bigquery-luan-chuyen-du-lieu-noi-bo-voi-bang-thong-hang-petabitgiay-kNLr3eAbVgA Nguyen Hoang 2026-10-18 08:29:46 <![CDATA[Google BigQuery - Bài học 3: Lưu trữ dạng cột (Columnar Storage - Capacitor) – Bí mật giúp BigQuery quét hàng Terabyte dữ liệu chỉ trong vài giây]]> https://viblo.asia/p/google-bigquery-bai-hoc-3-luu-tru-dang-cot-columnar-storage-capacitor-bi-mat-giup-bigquery-quet-hang-terabyte-du-lieu-chi-trong-vai-giay-pPLkNQedJRZ https://viblo.asia/p/google-bigquery-bai-hoc-3-luu-tru-dang-cot-columnar-storage-capacitor-bi-mat-giup-bigquery-quet-hang-terabyte-du-lieu-chi-trong-vai-giay-pPLkNQedJRZ Nguyen Hoang 2026-10-18 08:29:39 <![CDATA[Google BigQuery - Bài học 2: Giải phẫu kiến trúc BigQuery – Tách biệt hoàn toàn Compute (Dremel) và Storage (Colossus)]]> https://viblo.asia/p/google-bigquery-bai-hoc-2-giai-phau-kien-truc-bigquery-tach-biet-hoan-toan-compute-dremel-va-storage-colossus-Nj4vgO9xJ6r https://viblo.asia/p/google-bigquery-bai-hoc-2-giai-phau-kien-truc-bigquery-tach-biet-hoan-toan-compute-dremel-va-storage-colossus-Nj4vgO9xJ6r Nguyen Hoang 2026-10-18 08:29:32 <![CDATA[Google BigQuery - Bài học 1: OLTP vs OLAP – Tại sao MySQL/PostgreSQL "khóc thét" khi chạy báo cáo hàng trăm triệu dòng?]]> https://viblo.asia/p/google-bigquery-bai-hoc-1-oltp-vs-olap-tai-sao-mysqlpostgresql-khoc-thet-khi-chay-bao-cao-hang-tram-trieu-dong-wd43Ex1MLX9 https://viblo.asia/p/google-bigquery-bai-hoc-1-oltp-vs-olap-tai-sao-mysqlpostgresql-khoc-thet-khi-chay-bao-cao-hang-tram-trieu-dong-wd43Ex1MLX9 Nguyen Hoang 2026-10-18 08:29:22 <![CDATA[Giới thiệu về Bigquery trong Google Cloud Platform]]> https://viblo.asia/p/gioi-thieu-ve-bigquery-trong-google-cloud-platform-3P0lPGbbZox https://viblo.asia/p/gioi-thieu-ve-bigquery-trong-google-cloud-platform-3P0lPGbbZox Nguyễn Thanh Tùng 2021-04-22 13:52:12 <![CDATA[Query data firestore bằng các câu lệnh như mysql với bigquery]]> https://viblo.asia/p/query-data-firestore-bang-cac-cau-lenh-nhu-mysql-voi-bigquery-QpmlebQN5rd https://viblo.asia/p/query-data-firestore-bang-cac-cau-lenh-nhu-mysql-voi-bigquery-QpmlebQN5rd G...]]> Nguyen Son Tung 2020-11-22 16:57:49