{"id":26699,"date":"2026-09-30T13:26:24","date_gmt":"2026-09-30T06:26:24","guid":{"rendered":"https:\/\/gcloudvn.com\/?p=26699"},"modified":"2026-09-30T13:26:24","modified_gmt":"2026-09-30T06:26:24","slug":"bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc","status":"publish","type":"post","link":"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/","title":{"rendered":"BigQuery: 10 l\u1ed7i khi\u1ebfn h\u00f3a \u0111\u01a1n t\u0103ng ngo\u00e0i d\u1ef1 ki\u1ebfn v\u00e0 gi\u1ea3i ph\u00e1p kh\u1eafc ph\u1ee5c"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">Trong qu\u00e1 tr\u00ecnh khai th\u00e1c v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn tr\u00ean n\u1ec1n t\u1ea3ng Google Cloud, BigQuery lu\u00f4n l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u nh\u1edd kh\u1ea3 n\u0103ng truy v\u1ea5n t\u1ed1c \u0111\u1ed9 cao v\u00e0 ki\u1ebfn tr\u00fac kh\u00f4ng m\u00e1y ch\u1ee7 linh ho\u1ea1t. Tuy nhi\u00ean, ch\u00ednh c\u01a1 ch\u1ebf t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng t\u00e0i nguy\u00ean c\u00f9ng m\u00f4 h\u00ecnh t\u00ednh ph\u00ed theo dung l\u01b0\u1ee3ng qu\u00e9t d\u1eef li\u1ec7u l\u1ea1i tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 ngo\u00e0i d\u1ef1 \u0111o\u00e1n n\u1ebfu doanh nghi\u1ec7p kh\u00f4ng n\u1eafm r\u00f5 c\u01a1 ch\u1ebf v\u1eadn h\u00e0nh n\u1ed9i b\u1ed9. Th\u1ef1c t\u1ebf tri\u1ec3n khai cho th\u1ea5y, r\u1ea5t nhi\u1ec1u doanh nghi\u1ec7p ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi t\u00ecnh tr\u1ea1ng h\u00f3a \u0111\u01a1n h\u1ea1 t\u1ea7ng t\u0103ng v\u1ecdt v\u00e0o cu\u1ed1i th\u00e1ng m\u00e0 kh\u00f4ng hi\u1ec3u nguy\u00ean nh\u00e2n b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u00e2u.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u1eb1m gi\u00fap doanh nghi\u1ec7p ch\u1ee7 \u0111\u1ed9ng ki\u1ec3m so\u00e1t ng\u00e2n s\u00e1ch v\u00e0 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u n\u0103ng khai th\u00e1c d\u1eef li\u1ec7u, h\u00e3y c\u00f9ng Gimasys t\u00ecm hi\u1ec3u v\u1ec1 10 sai l\u1ea7m ph\u1ed5 bi\u1ebfn nh\u1ea5t khi\u1ebfn chi ph\u00ed BigQuery t\u0103ng cao ngo\u00e0i d\u1ef1 ki\u1ebfn c\u00f9ng c\u00e1c gi\u1ea3i ph\u00e1p \u0111\u1ec3 t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t l\u00e0m vi\u1ec7c.<\/span><\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_87 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><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><\/span><\/a><\/span><\/div>\n<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:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#10_sai_lam_pho_bien_lam_tang_chi_phi_va_cach_toi_uu_hieu_suat_su_dung_BigQuery\" >10 sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0m t\u0103ng chi ph\u00ed v\u00e0 c\u00e1ch t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng BigQuery\u00a0<\/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:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#1_Thoi_quen_su_dung_lenh_SELECT_tren_cac_bang_du_lieu_lon\" >1. Th\u00f3i quen s\u1eed d\u1ee5ng l\u1ec7nh SELECT * tr\u00ean c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u l\u1edbn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#2_Hieu_sai_ve_co_che_hoat_dong_cua_lenh_LIMIT\" >2. Hi\u1ec3u sai v\u1ec1 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a l\u1ec7nh LIMIT<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#3_Khong_thiet_lap_phan_vung_Partitioning_va_gom_nhom_Clustering\" >3. Kh\u00f4ng thi\u1ebft l\u1eadp ph\u00e2n v\u00f9ng (Partitioning) v\u00e0 gom nh\u00f3m (Clustering)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#4_Lam_dung_phuong_thuc_day_du_lieu_lien_tuc_Streaming_Inserts\" >4. L\u1ea1m d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ea9y d\u1eef li\u1ec7u li\u00ean t\u1ee5c (Streaming Inserts)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#5_Lua_chon_sai_mo_hinh_tinh_gia_so_voi_khoi_luong_cong_viec\" >5. L\u1ef1a ch\u1ecdn sai m\u00f4 h\u00ecnh t\u00ednh gi\u00e1 so v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#6_Cau_hinh_tu_dong_mo_rong_tai_nguyen_chua_hop_ly\" >6. C\u1ea5u h\u00ecnh t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng t\u00e0i nguy\u00ean ch\u01b0a h\u1ee3p l\u00fd<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#7_Toi_uu_hoa_cac_phep_noi_JOIN_chua_hieu_qua_tren_cac_bang_du_lieu_lon\" >7. T\u1ed1i \u01b0u h\u00f3a c\u00e1c ph\u00e9p n\u1ed1i (JOIN) ch\u01b0a hi\u1ec7u qu\u1ea3 tr\u00ean c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u l\u1edbn<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#8_Khong_thiet_lap_han_muc_chi_tieu_va_gioi_han_truy_van\" >8. Kh\u00f4ng thi\u1ebft l\u1eadp h\u1ea1n m\u1ee9c chi ti\u00eau v\u00e0 gi\u1edbi h\u1ea1n truy v\u1ea5n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#9_Bo_quen_chinh_sach_giam_gia_luu_tru_dai_han_cho_du_lieu_it_hoat_dong\" >9. B\u1ecf qu\u00ean ch\u00ednh s\u00e1ch gi\u1ea3m gi\u00e1 l\u01b0u tr\u1eef d\u00e0i h\u1ea1n cho d\u1eef li\u1ec7u \u00edt ho\u1ea1t \u0111\u1ed9ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#10_Thuc_thi_cac_cau_truy_van_lon_ma_khong_chay_thu_nghiem_Dry_Run\" >10. Th\u1ef1c thi c\u00e1c c\u00e2u truy v\u1ea5n l\u1edbn m\u00e0 kh\u00f4ng ch\u1ea1y th\u1eed nghi\u1ec7m (Dry Run)<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#Dong_Hanh_Cung_Gimasys_Trong_Lo_Trinh_Toi_Uu_Chi_Phi_Google_Cloud\" >\u0110\u1ed3ng H\u00e0nh C\u00f9ng Gimasys Trong L\u1ed9 Tr\u00ecnh T\u1ed1i \u01afu Chi Ph\u00ed Google Cloud<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/gcloudvn.com\/en\/bigquery-10-loi-khien-hoa-don-tang-ngoai-du-kien-va-giai-phap-khac-phuc\/#Ket_luan\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"10_sai_lam_pho_bien_lam_tang_chi_phi_va_cach_toi_uu_hieu_suat_su_dung_BigQuery\"><\/span><b>10 sai l\u1ea7m ph\u1ed5 bi\u1ebfn l\u00e0m t\u0103ng chi ph\u00ed v\u00e0 c\u00e1ch t\u1ed1i \u01b0u hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng BigQuery\u00a0<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">BigQuery l\u00e0 kho d\u1ecbch v\u1ee5 cho ph\u00e9p l\u01b0u tr\u1eef v\u00e0 truy v\u1ea5n c\u00e1c t\u1eadp d\u1eef li\u1ec7u l\u1edbn v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ef1c nhanh, nh\u01b0ng \u0111\u1ed5i l\u1ea1i doanh nghi\u1ec7p ph\u1ea3i ch\u1ecbu h\u00e0ng t\u1ea5n chi ph\u00ed ngo\u00e0i lu\u1ed3ng n\u1ebfu kh\u00f4ng t\u00ecm hi\u1ec3u k\u1ef9 v\u1ec1 ph\u01b0\u01a1ng ph\u00e1p s\u1eed d\u1ee5ng BigQuery. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 10 sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u0169ng nh\u01b0 bi\u1ec7n ph\u00e1p t\u1eadn d\u1ee5ng BigQuery m\u00e0 c\u00e1c doanh nghi\u1ec7p n\u00ean l\u01b0u \u00fd.\u00a0<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"1_Thoi_quen_su_dung_lenh_SELECT_tren_cac_bang_du_lieu_lon\"><\/span><b>1. Th\u00f3i quen s\u1eed d\u1ee5ng l\u1ec7nh SELECT * tr\u00ean c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u l\u1edbn<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 th\u00f3i quen ph\u1ed5 bi\u1ebfn nh\u1ea5t v\u00e0 c\u0169ng l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y t\u1ed1n k\u00e9m chi ph\u00ed BigQuery nhanh nh\u1ea5t \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed9i ng\u0169 ph\u00e2n t\u00edch d\u1eef li\u1ec7u. Khi s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh t\u00ednh ph\u00ed theo dung l\u01b0\u1ee3ng truy v\u1ea5n (On-demand pricing), chi ph\u00ed s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh d\u1ef1a tr\u00ean t\u1ed5ng s\u1ed1 l\u01b0\u1ee3ng d\u1eef li\u1ec7u m\u00e0 h\u1ec7 th\u1ed1ng ph\u1ea3i qu\u00e9t qua.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Kh\u00e1c v\u1edbi c\u00e1c c\u01a1 s\u1edf d\u1eef li\u1ec7u quan h\u1ec7 truy\u1ec1n th\u1ed1ng, BigQuery l\u01b0u tr\u1eef d\u1eef li\u1ec7u theo d\u1ea1ng c\u1ed9t (columnar format). \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u1ebfu b\u1ea1n ch\u1ec9 c\u1ea7n l\u1ea5y th\u00f4ng tin c\u1ee7a 4 c\u1ed9t trong m\u1ed9t b\u1ea3ng g\u1ed3m 60 c\u1ed9t, h\u1ec7 th\u1ed1ng ch\u1ec9 qu\u00e9t \u0111\u00fang dung l\u01b0\u1ee3ng c\u1ee7a 4 c\u1ed9t \u0111\u00f3. Tuy nhi\u00ean, khi b\u1ea1n th\u1ef1c thi l\u1ec7nh SELECT *, h\u1ec7 th\u1ed1ng bu\u1ed9c ph\u1ea3i \u0111\u1ecdc to\u00e0n b\u1ed9 60 c\u1ed9t, b\u1ea5t k\u1ec3 \u1ee9ng d\u1ee5ng c\u1ee7a b\u1ea1n c\u00f3 s\u1eed d\u1ee5ng h\u1ebft c\u00e1c d\u1eef li\u1ec7u \u0111\u00f3 hay kh\u00f4ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">H\u00e3y c\u00f9ng xem x\u00e9t s\u1ef1 ch\u00eanh l\u1ec7ch chi ph\u00ed trong b\u1ea3ng so s\u00e1nh th\u1ef1c t\u1ebf d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ed1i v\u1edbi m\u1ed9t b\u1ea3ng d\u1eef li\u1ec7u c\u00f3 dung l\u01b0\u1ee3ng 2 TB:<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>B\u1ea3ng truy v\u1ea5n v\u00ed d\u1ee5<\/b><\/td>\n<td><b>Dung l\u01b0\u1ee3ng b\u1ea3ng<\/b><\/td>\n<td><b>S\u1ed1 c\u1ed9t c\u1ea7n d\u00f9ng<\/b><\/td>\n<td><b>Dung l\u01b0\u1ee3ng qu\u00e9t th\u1ef1c t\u1ebf<\/b><\/td>\n<td><b>Chi ph\u00ed \u01b0\u1edbc t\u00ednh (m\u1ee9c $6.25\/TB)<\/b><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">SELECT *<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2 TB<\/span><\/td>\n<td><span style=\"font-weight: 400;\">4 \/ 60 c\u1ed9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2 TB<\/span><\/td>\n<td><span style=\"font-weight: 400;\">$12.50<\/span><\/td>\n<\/tr>\n<tr>\n<td><span style=\"font-weight: 400;\">Ch\u1ec9 ch\u1ecdn c\u00e1c c\u1ed9t c\u1ea7n thi\u1ebft<\/span><\/td>\n<td><span style=\"font-weight: 400;\">2 TB<\/span><\/td>\n<td><span style=\"font-weight: 400;\">4 \/ 60 c\u1ed9t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kho\u1ea3ng 133 GB<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kho\u1ea3ng $0.83<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><a href=\"https:\/\/gcloudvn.com\/en\/demos-thuc-te-gemini-enterprise-agent-platform\/attachment\/anh-1-23-2\/\" rel=\"attachment wp-att-26651\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-26651\" src=\"https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-1-23.png\" alt=\"\" width=\"1442\" height=\"812\" srcset=\"https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-1-23.png 1442w, https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-1-23-768x432.png 768w, https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-1-23-18x10.png 18w\" sizes=\"auto, (max-width: 1442px) 100vw, 1442px\" \/><\/a><\/p>\n<p><b>C\u00e1ch kh\u1eafc ph\u1ee5c:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ea7n lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n th\u00f3i quen d\u00f9ng l\u1ec7nh SELECT * trong m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh th\u1ef1c t\u1ebf. Thay v\u00e0o \u0111\u00f3, h\u00e3y lu\u00f4n ch\u1ec9 \u0111\u1ecbnh ch\u00ednh x\u00e1c t\u00ean c\u00e1c c\u1ed9t c\u1ea7n truy xu\u1ea5t. \u0110\u1ed1i v\u1edbi c\u00e1c t\u00e1c v\u1ee5 truy v\u1ea5n t\u1ef1 \u0111\u1ed9ng \u0111\u01b0\u1ee3c l\u1eadp l\u1ecbch \u0111\u1ecbnh k\u1ef3, doanh nghi\u1ec7p n\u00ean ti\u1ebfn h\u00e0nh r\u00e0 so\u00e1t to\u00e0n b\u1ed9 \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh k\u1ecbp th\u1eddi tr\u01b0\u1edbc k\u1ef3 thanh to\u00e1n ti\u1ebfp theo.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"2_Hieu_sai_ve_co_che_hoat_dong_cua_lenh_LIMIT\"><\/span><b>2. Hi\u1ec3u sai v\u1ec1 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a l\u1ec7nh LIMIT<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Nhi\u1ec1u k\u1ef9 s\u01b0 khi m\u1edbi chuy\u1ec3n sang s\u1eed d\u1ee5ng BigQuery th\u01b0\u1eddng l\u1ea7m t\u01b0\u1edfng r\u1eb1ng vi\u1ec7c th\u00eam c\u00e2u l\u1ec7nh LIMIT 10 v\u00e0o cu\u1ed1i truy v\u1ea5n s\u1ebd gi\u00fap h\u1ec7 th\u1ed1ng ch\u1ec9 qu\u00e9t \u0111\u00fang 10 d\u00f2ng d\u1eef li\u1ec7u, t\u1eeb \u0111\u00f3 gi\u1ea3m thi\u1ec3u chi ph\u00ed BigQuery. Tuy nhi\u00ean, c\u01a1 ch\u1ebf th\u1ef1c thi c\u1ee7a h\u1ec7 th\u1ed1ng ho\u00e0n to\u00e0n ng\u01b0\u1ee3c l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">BigQuery lu\u00f4n th\u1ef1c hi\u1ec7n qu\u00e9t to\u00e0n b\u1ed9 b\u1ea3ng d\u1eef li\u1ec7u tr\u01b0\u1edbc, \u00e1p d\u1ee5ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u1ecdc, t\u00ednh to\u00e1n k\u1ebft qu\u1ea3 r\u1ed3i m\u1edbi s\u1eed d\u1ee5ng \u0111i\u1ec1u ki\u1ec7n LIMIT \u0111\u1ec3 gi\u1edbi h\u1ea1n s\u1ed1 l\u01b0\u1ee3ng b\u1ea3n ghi hi\u1ec3n th\u1ecb ra m\u00e0n h\u00ecnh.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u1ebfu m\u1ed9t chuy\u00ean vi\u00ean ph\u00e2n t\u00edch th\u1ef1c hi\u1ec7n xem tr\u01b0\u1edbc d\u1eef li\u1ec7u tr\u00ean m\u1ed9t b\u1ea3ng dung l\u01b0\u1ee3ng 500 TB b\u1eb1ng l\u1ec7nh SELECT * k\u1ebft h\u1ee3p v\u1edbi LIMIT 10, h\u1ec7 th\u1ed1ng v\u1eabn s\u1ebd qu\u00e9t \u0111\u1ee7 500 TB d\u1eef li\u1ec7u. Thao t\u00e1c t\u01b0\u1edfng ch\u1eebng nh\u01b0 v\u00f4 h\u1ea1i n\u00e0y c\u00f3 th\u1ec3 ti\u00eau t\u1ed1n c\u1ee7a doanh nghi\u1ec7p h\u01a1n $3,000 ch\u1ec9 trong v\u00e0i gi\u00e2y. \u0110\u00e2y ch\u00ednh l\u00e0 nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn nh\u1eefng \u0111\u1ee3t t\u0103ng chi ph\u00ed \u0111\u1ed9t bi\u1ebfn t\u1ea1i c\u00e1c \u0111\u01a1n v\u1ecb c\u1ea5p quy\u1ec1n truy c\u1eadp d\u1eef li\u1ec7u th\u00f4 tr\u1ef1c ti\u1ebfp cho \u0111\u1ed9i ng\u0169 nh\u00e2n vi\u00ean.<\/span><\/p>\n<p><b>C\u00e1ch kh\u1eafc ph\u1ee5c:<\/b><span style=\"font-weight: 400;\"> \u0110\u1ec3 xem tr\u01b0\u1edbc c\u1ea5u tr\u00fac v\u00e0 d\u1eef li\u1ec7u c\u1ee7a b\u1ea3ng m\u00e0 kh\u00f4ng ph\u00e1t sinh chi ph\u00ed qu\u00e9t:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng t\u00ednh n\u0103ng xem tr\u01b0\u1edbc (Table Preview) tr\u1ef1c ti\u1ebfp tr\u00ean giao di\u1ec7n Google Cloud Console. T\u00ednh n\u0103ng n\u00e0y cho ph\u00e9p xem c\u00e1c d\u00f2ng d\u1eef li\u1ec7u ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng c\u00e2u l\u1ec7nh m\u1eabu TABLESAMPLE SYSTEM (1 PERCENT) \u0111\u1ec3 ch\u1ec9 qu\u00e9t m\u1ed9t ph\u1ea7n nh\u1ecf \u0111\u1ea1i di\u1ec7n c\u1ee7a t\u1eadp d\u1eef li\u1ec7u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1ea1o c\u00e1c ch\u1ebf \u0111\u1ed9 xem (View) \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n v\u00f9ng ho\u1eb7c gom nh\u00f3m \u0111\u1ec3 nh\u00e2n vi\u00ean khai th\u00e1c an to\u00e0n trong qu\u00e1 tr\u00ecnh nghi\u00ean c\u1ee9u.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"3_Khong_thiet_lap_phan_vung_Partitioning_va_gom_nhom_Clustering\"><\/span><b>3. Kh\u00f4ng thi\u1ebft l\u1eadp ph\u00e2n v\u00f9ng (Partitioning) v\u00e0 gom nh\u00f3m (Clustering)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Vi\u1ec7c b\u1ecf qua c\u00f4ng \u0111o\u1ea1n ph\u00e2n v\u00f9ng v\u00e0 gom nh\u00f3m d\u1eef li\u1ec7u trong b\u01b0\u1edbc thi\u1ebft k\u1ebf ki\u1ebfn tr\u00fac ban \u0111\u1ea7u l\u00e0 m\u1ed9t thi\u1ebfu s\u00f3t r\u1ea5t l\u1edbn. N\u1ebfu m\u1ed9t b\u1ea3ng d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c ph\u00e2n v\u00f9ng, m\u1ed7i truy v\u1ea5n khi th\u1ef1c thi s\u1ebd bu\u1ed9c h\u1ec7 th\u1ed1ng ph\u1ea3i qu\u00e9t to\u00e0n b\u1ed9 t\u1eadp d\u1eef li\u1ec7u t\u1eeb \u0111\u1ea7u \u0111\u1ebfn cu\u1ed1i, cho d\u00f9 \u0111i\u1ec1u ki\u1ec7n l\u1ecdc c\u1ee7a b\u1ea1n c\u00f3 nh\u1ecf \u0111\u1ebfn \u0111\u00e2u.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Vi\u1ec7c ph\u00e2n v\u00f9ng (Partitioning) theo c\u1ed9t ng\u00e0y ho\u1eb7c th\u1eddi gian gi\u00fap BigQuery lo\u1ea1i b\u1ecf c\u00e1c v\u00f9ng d\u1eef li\u1ec7u kh\u00f4ng li\u00ean quan khi th\u1ef1c hi\u1ec7n truy v\u1ea5n c\u00f3 \u0111i\u1ec1u ki\u1ec7n l\u1ecdc theo th\u1eddi gian. Trong khi \u0111\u00f3, vi\u1ec7c gom nh\u00f3m (Clustering) d\u1ef1a tr\u00ean c\u00e1c c\u1ed9t th\u01b0\u1eddng xuy\u00ean \u0111\u01b0\u1ee3c t\u00ecm ki\u1ebfm s\u1ebd gi\u00fap thu h\u1eb9p ph\u1ea1m vi qu\u00e9t s\u00e2u h\u01a1n n\u1eefa trong t\u1eebng ph\u00e2n v\u00f9ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c l\u1ed7i thi\u1ebft l\u1eadp ph\u00e2n v\u00f9ng v\u00e0 gom nh\u00f3m th\u01b0\u1eddng g\u1eb7p khi\u1ebfn chi ph\u00ed BigQuery b\u1ecb l\u00e3ng ph\u00ed:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ph\u00e2n v\u00f9ng d\u1ef1a tr\u00ean c\u1ed9t c\u00f3 qu\u00e1 nhi\u1ec1u gi\u00e1 tr\u1ecb duy nh\u1ea5t (High-cardinality), d\u1eabn \u0111\u1ebfn vi\u1ec7c t\u1ea1o ra qu\u00e1 nhi\u1ec1u ph\u00e2n v\u00f9ng nh\u1ecf l\u00e0m gi\u1ea3m hi\u1ec7u n\u0103ng chung.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng h\u00e0m b\u1ecdc quanh c\u1ed9t ph\u00e2n v\u00f9ng trong \u0111i\u1ec1u ki\u1ec7n l\u1ecdc, v\u00ed d\u1ee5 nh\u01b0 DATE(timestamp_column). Vi\u1ec7c n\u00e0y khi\u1ebfn h\u1ec7 th\u1ed1ng kh\u00f4ng th\u1ec3 t\u1ef1 \u0111\u1ed9ng nh\u1eadn di\u1ec7n ph\u00e2n v\u00f9ng v\u00e0 b\u1eaft bu\u1ed9c ph\u1ea3i quay l\u1ea1i qu\u00e9t to\u00e0n b\u1ed9 b\u1ea3ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kh\u00f4ng thi\u1ebft l\u1eadp gom nh\u00f3m cho c\u00e1c c\u1ed9t xu\u1ea5t hi\u1ec7n th\u01b0\u1eddng xuy\u00ean trong m\u1ec7nh \u0111\u1ec1 \u0111i\u1ec1u ki\u1ec7n WHERE.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"4_Lam_dung_phuong_thuc_day_du_lieu_lien_tuc_Streaming_Inserts\"><\/span><b>4. L\u1ea1m d\u1ee5ng ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ea9y d\u1eef li\u1ec7u li\u00ean t\u1ee5c (Streaming Inserts)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 \u0111\u01b0a d\u1eef li\u1ec7u v\u00e0o h\u1ec7 th\u1ed1ng, doanh nghi\u1ec7p c\u00f3 th\u1ec3 ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c n\u1ea1p theo m\u1ebb (Batch Loading) ho\u1eb7c \u0111\u1ea9y d\u1eef li\u1ec7u theo th\u1eddi gian th\u1ef1c (Streaming Inserts). Chi ph\u00ed cho vi\u1ec7c \u0111\u1ea9y d\u1eef li\u1ec7u theo th\u1eddi gian th\u1ef1c l\u00e0 $0.01 cho m\u1ed7i 200 MB, t\u01b0\u01a1ng \u0111\u01b0\u01a1ng kho\u1ea3ng $50 cho m\u1ed7i TB d\u1eef li\u1ec7u n\u1ea1p v\u00e0o. Trong khi \u0111\u00f3, vi\u1ec7c n\u1ea1p d\u1eef li\u1ec7u theo m\u1ebb t\u1eeb d\u1ecbch v\u1ee5 l\u01b0u tr\u1eef Google Cloud Storage ho\u00e0n to\u00e0n mi\u1ec5n ph\u00ed.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nhi\u1ec1u \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt th\u01b0\u1eddng \u01b0u ti\u00ean ch\u1ecdn ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ea9y d\u1eef li\u1ec7u li\u00ean t\u1ee5c v\u00ec mong mu\u1ed1n d\u1eef li\u1ec7u lu\u00f4n m\u1edbi nh\u1ea5t. Tuy nhi\u00ean, \u0111a s\u1ed1 c\u00e1c b\u00e0i to\u00e1n kinh doanh hi\u1ec7n nay ch\u1ec9 c\u1ea7n d\u1eef li\u1ec7u c\u1eadp nh\u1eadt theo chu k\u1ef3 v\u00e0i ph\u00fat thay v\u00ec t\u1eebng gi\u00e2y. Vi\u1ec7c thi\u1ebfu c\u00e2n nh\u1eafc n\u00e0y khi\u1ebfn chi ph\u00ed BigQuery gia t\u0103ng \u0111\u00e1ng k\u1ec3 \u1edf kh\u00e2u nh\u1eadp d\u1eef li\u1ec7u h\u00e0ng th\u00e1ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tr\u01b0\u1eddng h\u1ee3p doanh nghi\u1ec7p n\u00ean c\u00e2n nh\u1eafc s\u1eed d\u1ee5ng \u0111\u1ea9y d\u1eef li\u1ec7u li\u00ean t\u1ee5c:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c h\u1ec7 th\u1ed1ng nghi\u1ec7p v\u1ee5 b\u1eaft bu\u1ed9c ph\u1ea3i c\u00f3 d\u1eef li\u1ec7u d\u01b0\u1edbi m\u1ed9t ph\u00fat \u0111\u1ec3 ph\u1ee5c v\u1ee5 vi\u1ec7c ra quy\u1ebft \u0111\u1ecbnh t\u1ee9c th\u00ec ho\u1eb7c tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh ph\u00e1p l\u00fd.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lu\u1ed3ng d\u1eef li\u1ec7u s\u1ef1 ki\u1ec7n c\u00f3 t\u1ea7n su\u1ea5t cao nh\u01b0ng t\u1ed5ng dung l\u01b0\u1ee3ng nh\u1ecf, khi\u1ebfn chi ph\u00ed n\u1ea1p kh\u00f4ng \u0111\u00e1ng k\u1ec3.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e1c quy tr\u00ecnh m\u00e0 vi\u1ec7c x\u00e2y d\u1ef1ng v\u00f9ng \u0111\u1ec7m d\u1eef li\u1ec7u ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u so v\u1edbi chi ph\u00ed tr\u1ea3 cho vi\u1ec7c \u0111\u1ea9y d\u1eef li\u1ec7u tr\u1ef1c ti\u1ebfp.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p c\u00f2n l\u1ea1i, gi\u1ea3i ph\u00e1p n\u1ea1p d\u1eef li\u1ec7u theo m\u1ebb nh\u1ecf (Micro-batching) k\u1ebft h\u1ee3p gi\u1eefa Cloud Functions ho\u1eb7c Dataflow v\u1edbi Google Cloud Storage \u0111\u1ecbnh k\u1ef3 t\u1eeb 5 \u0111\u1ebfn 10 ph\u00fat s\u1ebd gi\u00fap doanh nghi\u1ec7p \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111\u1ed9 m\u1edbi c\u1ee7a d\u1eef li\u1ec7u g\u1ea7n nh\u01b0 theo th\u1eddi gian th\u1ef1c m\u00e0 ho\u00e0n to\u00e0n kh\u00f4ng m\u1ea5t chi ph\u00ed n\u1ea1p.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"5_Lua_chon_sai_mo_hinh_tinh_gia_so_voi_khoi_luong_cong_viec\"><\/span><b>5. L\u1ef1a ch\u1ecdn sai m\u00f4 h\u00ecnh t\u00ednh gi\u00e1 so v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/gcloudvn.com\/en\/google-cloud-platform\/\">Google Cloud<\/a> cung c\u1ea5p hai m\u00f4 h\u00ecnh t\u00ednh chi ph\u00ed BigQuery ch\u00ednh: M\u00f4 h\u00ecnh theo dung l\u01b0\u1ee3ng truy v\u1ea5n (On-demand) v\u00e0 m\u00f4 h\u00ecnh theo n\u0103ng l\u1ef1c x\u1eed l\u00fd (Capacity-based pricing).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nhi\u1ec1u doanh nghi\u1ec7p b\u1eaft \u0111\u1ea7u s\u1eed d\u1ee5ng BigQuery v\u1edbi m\u00f4 h\u00ecnh theo dung l\u01b0\u1ee3ng m\u00e0 kh\u00f4ng nh\u1eadn ra khi kh\u1ed1i l\u01b0\u1ee3ng truy v\u1ea5n t\u0103ng tr\u01b0\u1edfng \u1ed5n \u0111\u1ecbnh, vi\u1ec7c duy tr\u00ec m\u00f4 h\u00ecnh c\u0169 s\u1ebd l\u00e0m ph\u00e1t sinh chi ph\u00ed BigQuery cao h\u01a1n r\u1ea5t nhi\u1ec1u so v\u1edbi nhu c\u1ea7u th\u1ef1c t\u1ebf.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>M\u00f4 h\u00ecnh t\u00ednh gi\u00e1<\/b><\/td>\n<td><b>Ph\u00f9 h\u1ee3p nh\u1ea5t cho<\/b><\/td>\n<td><b>C\u01a1 ch\u1ebf chi ph\u00ed<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>On-demand<\/b><span style=\"font-weight: 400;\"> (Theo dung l\u01b0\u1ee3ng)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Nhu c\u1ea7u th\u0103m d\u00f2, dung l\u01b0\u1ee3ng truy v\u1ea5n th\u1ea5p, kh\u00f4ng c\u1ed1 \u0111\u1ecbnh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">$6.25 tr\u00ean m\u1ed7i TB d\u1eef li\u1ec7u qu\u00e9t<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Standard Edition<\/b><span style=\"font-weight: 400;\"> (G\u00f3i ti\u00eau chu\u1ea9n)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, quy m\u00f4 v\u1eeba<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u00ednh theo gi\u1edd s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean k\u1ebft h\u1ee3p t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Enterprise Edition<\/b><span style=\"font-weight: 400;\"> (G\u00f3i doanh nghi\u1ec7p)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">H\u1ec7 th\u1ed1ng v\u1eadn h\u00e0nh ch\u00ednh th\u1ee9c c\u1ea7n chia s\u1ebb t\u00e0i nguy\u00ean<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u00ednh theo gi\u1edd s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean v\u1edbi c\u00e1c l\u1ef1a ch\u1ecdn kh\u00e1c<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Enterprise Plus<\/b><span style=\"font-weight: 400;\"> (G\u00f3i cao c\u1ea5p)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">M\u00f4i tr\u01b0\u1eddng \u0111\u00f2i h\u1ecfi ti\u00eau chu\u1ea9n b\u1ea3o m\u1eadt v\u00e0 tu\u00e2n th\u1ee7 cao nh\u1ea5t<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u00ednh theo gi\u1edd s\u1eed d\u1ee5ng t\u00e0i nguy\u00ean v\u1edbi b\u1ed9 t\u00ednh n\u0103ng b\u1ea3o m\u1eadt to\u00e0n di\u1ec7n nh\u1ea5t<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">Doanh nghi\u1ec7p n\u00ean quy\u1ebft \u0111\u1ecbnh chuy\u1ec3n \u0111\u1ed5i m\u00f4 h\u00ecnh t\u00ednh ph\u00ed d\u1ef1a tr\u00ean d\u1eef li\u1ec7u ph\u00e2n t\u00edch truy v\u1ea5n trong \u00edt nh\u1ea5t 30 ng\u00e0y li\u00ean t\u1ee5c, thay v\u00ec \u0111\u01b0a ra \u01b0\u1edbc t\u00ednh d\u1ef1a tr\u00ean m\u1ed9t th\u1eddi \u0111i\u1ec3m ng\u1eafn h\u1ea1n.<\/span><\/p>\n<h3><span class=\"ez-toc-section\" id=\"6_Cau_hinh_tu_dong_mo_rong_tai_nguyen_chua_hop_ly\"><\/span><b>6. C\u1ea5u h\u00ecnh t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng t\u00e0i nguy\u00ean ch\u01b0a h\u1ee3p l\u00fd<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng t\u00e0i nguy\u00ean gi\u00fap h\u1ec7 th\u1ed1ng t\u1ef1 \u0111i\u1ec1u ch\u1ec9nh c\u00f4ng su\u1ea5t theo nhu c\u1ea7u th\u1ef1c t\u1ebf. Tuy nhi\u00ean, c\u01a1 ch\u1ebf c\u1ed1t l\u00f5i c\u1ee7a BigQuery l\u00e0 t\u1ed1i \u01b0u \u0111\u1ec3 x\u1eed l\u00fd c\u00e2u l\u1ec7nh nhanh nh\u1ea5t c\u00f3 th\u1ec3. Do \u0111\u00f3, h\u1ec7 th\u1ed1ng s\u1ebd c\u1ed1 g\u1eafng ph\u00e1t \u0111\u1ed9ng t\u1ed1i \u0111a s\u1ed1 l\u01b0\u1ee3ng t\u00e0i nguy\u00ean \u0111\u01b0\u1ee3c ph\u00e9p s\u1eed d\u1ee5ng, ngay c\u1ea3 khi c\u00f4ng vi\u1ec7c \u0111\u00f3 kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i ch\u1ea1y nhanh \u0111\u1ebfn m\u1ee9c nh\u01b0 v\u1eady.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u1ed9t c\u1ea5u h\u00ecnh \u0111\u1eb7t m\u1ee9c t\u1ed1i thi\u1ec3u l\u00e0 0 v\u00e0 m\u1ee9c t\u1ed1i \u0111a l\u00e0 500 t\u00e0i nguy\u00ean t\u1ef1 \u0111\u1ed9ng m\u1edf r\u1ed9ng c\u00f3 th\u1ec3 khi\u1ebfn h\u1ec7 th\u1ed1ng th\u01b0\u1eddng xuy\u00ean ch\u1ea1y ch\u1ea1m m\u1ee9c 500 t\u00e0i nguy\u00ean cho c\u00e1c d\u1eef li\u1ec7u v\u1ed1n d\u0129 c\u00f3 th\u1ec3 ch\u1ea1y ho\u00e0n th\u00e0nh \u00eam \u1ea3 \u1edf m\u1ee9c 100 t\u00e0i nguy\u00ean. B\u00ean c\u1ea1nh \u0111\u00f3, h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ch\u1ec9nh t\u00e0i nguy\u00ean theo c\u00e1c b\u01b0\u1edbc nh\u1ea3y 100 \u0111\u01a1n v\u1ecb v\u00e0 t\u00ednh to\u00e1n l\u1ea1i sau m\u1ed7i ph\u00fat. Do \u0111\u00f3, m\u1ed9t c\u00f4ng vi\u1ec7c ch\u1ec9 c\u1ea7n 30 t\u00e0i nguy\u00ean v\u1eabn s\u1ebd \u0111\u01b0\u1ee3c c\u1ea5p ph\u00e1t t\u1ed1i thi\u1ec3u 100 t\u00e0i nguy\u00ean.<\/span><\/p>\n<p><b>C\u00e1ch kh\u1eafc ph\u1ee5c:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u00e1nh gi\u00e1 l\u1ea1i xem c\u00e1c t\u00e1c v\u1ee5 c\u00f3 th\u1ef1c s\u1ef1 c\u1ea7n ho\u00e0n th\u00e0nh trong v\u00e0i gi\u00e2y hay c\u00f3 th\u1ec3 ch\u1ea5p nh\u1eadn th\u1eddi gian ch\u1ea1y k\u00e9o d\u00e0i h\u01a1n m\u1ed9t ch\u00fat \u0111\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Thi\u1ebft l\u1eadp m\u1ee9c t\u00e0i nguy\u00ean c\u01a1 s\u1edf ph\u00f9 h\u1ee3p v\u1edbi nhu c\u1ea7u duy tr\u00ec \u1ed5n \u0111\u1ecbnh thay v\u00ec \u0111\u1ec3 m\u1eb7c \u0111\u1ecbnh b\u1eb1ng 0.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u00e1ch bi\u1ec7t nh\u00f3m qu\u1ea3n l\u00fd c\u00f4ng vi\u1ec7c gi\u1eefa c\u00e1c b\u1ea3ng b\u00e1o c\u00e1o t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp v\u1edbi c\u00e1c lu\u1ed3ng x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1ef1 \u0111\u1ed9ng, gi\u00fap ph\u00e2n b\u1ed5 t\u00e0i nguy\u00ean h\u1ee3p l\u00fd theo \u0111\u00fang m\u1ee9c \u0111\u1ed9 \u01b0u ti\u00ean.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"7_Toi_uu_hoa_cac_phep_noi_JOIN_chua_hieu_qua_tren_cac_bang_du_lieu_lon\"><\/span><b>7. T\u1ed1i \u01b0u h\u00f3a c\u00e1c ph\u00e9p n\u1ed1i (JOIN) ch\u01b0a hi\u1ec7u qu\u1ea3 tr\u00ean c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u l\u1edbn<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">C\u00e1c ph\u00e9p n\u1ed1i d\u1eef li\u1ec7u kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u l\u00e0 <\/span><b>nguy\u00ean nh\u00e2n<\/b> <b>h\u00e0ng \u0111\u1ea7u<\/b><span style=\"font-weight: 400;\"> ti\u00eau t\u1ed1n t\u00e0i nguy\u00ean x\u1eed l\u00fd v\u00e0 l\u00e0m t\u0103ng chi ph\u00ed BigQuery. Khi ti\u1ebfn h\u00e0nh n\u1ed1i c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u l\u1edbn m\u00e0 kh\u00f4ng \u00e1p d\u1ee5ng c\u00e1c b\u1ed9 l\u1ecdc tr\u01b0\u1edbc, h\u1ec7 th\u1ed1ng b\u1eaft bu\u1ed9c ph\u1ea3i n\u1ea1p v\u00e0 x\u1eed l\u00fd to\u00e0n b\u1ed9 t\u1eadp d\u1eef li\u1ec7u c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c b\u1ea3ng tr\u01b0\u1edbc khi tr\u1ea3 v\u1ec1 k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c nguy\u00ean t\u1eafc k\u1ef9 thu\u1eadt gi\u00fap gi\u1ea3m thi\u1ec3u chi ph\u00ed khi th\u1ef1c hi\u1ec7n ph\u00e9p n\u1ed1i:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Lu\u00f4n \u00e1p d\u1ee5ng \u0111i\u1ec1u ki\u1ec7n l\u1ecdc WHERE \u0111\u1ec3 thu nh\u1ecf dung l\u01b0\u1ee3ng t\u1eebng b\u1ea3ng ri\u00eang bi\u1ec7t tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n k\u1ebft n\u1ed1i.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u1eb7t b\u1ea3ng c\u00f3 dung l\u01b0\u1ee3ng l\u1edbn nh\u1ea5t \u1edf ph\u00eda b\u00ean tr\u00e1i c\u1ee7a m\u1ec7nh \u0111\u1ec1 JOIN. \u0110i\u1ec1u n\u00e0y gi\u00fap tr\u00ecnh t\u1ed1i \u01b0u h\u00f3a c\u1ee7a BigQuery ph\u00e2n ph\u1ed1i d\u1eef li\u1ec7u t\u1eeb b\u1ea3ng nh\u1ecf h\u01a1n \u0111\u1ebfn c\u00e1c n\u00fat x\u1eed l\u00fd m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3 h\u01a1n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Th\u1ef1c hi\u1ec7n gom nh\u00f3m (Clustering) tr\u00ean c\u1ea3 hai b\u1ea3ng d\u1ef1a theo c\u00e1c kh\u00f3a k\u1ebft n\u1ed1i \u0111\u1ec3 h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 b\u1ecf qua c\u00e1c ph\u00e2n \u0111o\u1ea1n d\u1eef li\u1ec7u kh\u00f4ng li\u00ean quan.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u1ea1n ch\u1ebf vi\u1ec7c k\u1ebft n\u1ed1i c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u n\u1eb1m \u1edf c\u00e1c v\u00f9ng \u0111\u1ecba l\u00fd kh\u00e1c nhau \u0111\u1ec3 tr\u00e1nh ph\u00e1t sinh chi ph\u00ed truy\u1ec1n d\u1eef li\u1ec7u li\u00ean v\u00f9ng.<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/gcloudvn.com\/en\/demos-thuc-te-gemini-enterprise-agent-platform\/attachment\/anh-2-5-4\/\" rel=\"attachment wp-att-26650\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-26650\" src=\"https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-2-5.jpg\" alt=\"\" width=\"600\" height=\"314\" srcset=\"https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-2-5.jpg 600w, https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-2-5-18x9.jpg 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"8_Khong_thiet_lap_han_muc_chi_tieu_va_gioi_han_truy_van\"><\/span><b>8. Kh\u00f4ng thi\u1ebft l\u1eadp h\u1ea1n m\u1ee9c chi ti\u00eau v\u00e0 gi\u1edbi h\u1ea1n truy v\u1ea5n<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">M\u00f4 h\u00ecnh t\u00ednh ph\u00ed theo dung l\u01b0\u1ee3ng c\u1ee7a BigQuery kh\u00f4ng \u0111\u1eb7t s\u1eb5n gi\u1edbi h\u1ea1n chi ti\u00eau t\u1ed1i \u0111a. M\u1ed9t c\u00e2u l\u1ec7nh truy v\u1ea5n \u0111\u01b0\u1ee3c l\u1eadp sai c\u1ea5u h\u00ecnh, k\u1ebft n\u1ed1i hai b\u1ea3ng d\u1eef li\u1ec7u l\u1edbn ch\u01b0a \u0111\u01b0\u1ee3c l\u1ecdc c\u00f3 th\u1ec3 qu\u00e9t h\u00e0ng tr\u0103m terabyte d\u1eef li\u1ec7u ch\u1ec9 trong m\u1ed9t l\u1ea7n ch\u1ea1y.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e3 c\u00f3 nh\u1eefng s\u1ef1 c\u1ed1 th\u1ef1c t\u1ebf ghi nh\u1eadn m\u1ee9c chi ph\u00ed t\u0103ng th\u00eam h\u01a1n $2,000 ch\u1ec9 t\u1eeb m\u1ed9t c\u00e2u l\u1ec7nh \u0111\u01a1n l\u1ebb ch\u1ea1y ng\u1ea7m. Vi\u1ec7c thi\u1ebft l\u1eadp h\u1ea1n m\u1ee9c l\u00e0 gi\u1ea3i ph\u00e1p ki\u1ec3m so\u00e1t r\u1ea5t \u0111\u01a1n gi\u1ea3n nh\u01b0ng l\u1ea1i th\u01b0\u1eddng b\u1ecb c\u00e1c \u0111\u1ed9i ng\u0169 b\u1ecf qua.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c bi\u1ec7n ph\u00e1p ki\u1ec3m so\u00e1t c\u1ea7n tri\u1ec3n khai ngay:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u1eb7t gi\u1edbi h\u1ea1n dung l\u01b0\u1ee3ng d\u1eef li\u1ec7u t\u1ed1i \u0111a \u0111\u01b0\u1ee3c ph\u00e9p qu\u00e9t tr\u00ean t\u1eebng c\u00e2u truy v\u1ea5n \u1edf c\u1ea5p \u0111\u1ed9 to\u00e0n d\u1ef1 \u00e1n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u00c1p d\u1ee5ng h\u1ea1n m\u1ee9c theo ng\u00e0y cho t\u1eebng t\u00e0i kho\u1ea3n ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec3 tr\u00e1nh vi\u1ec7c thao t\u00e1c sai g\u00e2y l\u00e3ng ph\u00ed ng\u00e2n s\u00e1ch.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u1ea1o l\u1eadp m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m ri\u00eang bi\u1ec7t v\u1edbi h\u1ea1n m\u1ee9c nghi\u00eam ng\u1eb7t d\u00e0nh cho vi\u1ec7c nghi\u00ean c\u1ee9u v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u t\u1ef1 do, t\u00e1ch bi\u1ec7t ho\u00e0n to\u00e0n v\u1edbi m\u00f4i tr\u01b0\u1eddng v\u1eadn h\u00e0nh ch\u00ednh th\u1ee9c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C\u00e0i \u0111\u1eb7t c\u00e1c c\u1ea3nh b\u00e1o ng\u00e2n s\u00e1ch t\u1ef1 \u0111\u1ed9ng tr\u00ean Google Cloud Billing \u0111\u1ec3 k\u1ecbp th\u1eddi ph\u00e1t hi\u1ec7n khi chi ph\u00ed c\u00f3 d\u1ea5u hi\u1ec7u v\u01b0\u1ee3t ng\u01b0\u1ee1ng cho ph\u00e9p.<\/span><\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"9_Bo_quen_chinh_sach_giam_gia_luu_tru_dai_han_cho_du_lieu_it_hoat_dong\"><\/span><b>9. B\u1ecf qu\u00ean ch\u00ednh s\u00e1ch gi\u1ea3m gi\u00e1 l\u01b0u tr\u1eef d\u00e0i h\u1ea1n cho d\u1eef li\u1ec7u \u00edt ho\u1ea1t \u0111\u1ed9ng<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">BigQuery cung c\u1ea5p ch\u00ednh s\u00e1ch t\u1ef1 \u0111\u1ed9ng gi\u1ea3m 50% chi ph\u00ed l\u01b0u tr\u1eef \u0111\u1ed1i v\u1edbi c\u00e1c b\u1ea3ng ho\u1eb7c ph\u00e2n v\u00f9ng d\u1eef li\u1ec7u kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i hay c\u1eadp nh\u1eadt trong 90 ng\u00e0y li\u00ean ti\u1ebfp. Chi ph\u00ed l\u01b0u tr\u1eef l\u00fac n\u00e0y s\u1ebd gi\u1ea3m t\u1eeb $0.02\/GB\/th\u00e1ng xu\u1ed1ng c\u00f2n $0.01\/GB\/th\u00e1ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tuy nhi\u00ean, nhi\u1ec1u doanh nghi\u1ec7p ch\u01b0a t\u1ed1i \u01b0u \u0111\u01b0\u1ee3c kho\u1ea3n chi ph\u00ed n\u00e0y do hai nguy\u00ean nh\u00e2n:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Kh\u00f4ng r\u00e0 so\u00e1t \u0111\u1ecbnh k\u1ef3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh danh s\u00e1ch c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u \u0111\u00e3 l\u00e2u kh\u00f4ng c\u00f2n ho\u1ea1t \u0111\u1ed9ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">V\u00f4 t\u00ecnh th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c c\u1eadp nh\u1eadt kh\u00f4ng c\u1ea7n thi\u1ebft tr\u00ean c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u c\u0169, l\u00e0m l\u00e0m m\u1edbi l\u1ea1i chu k\u1ef3 90 ng\u00e0y v\u00e0 v\u00f4 t\u00ecnh l\u00e0m m\u1ea5t \u0111i quy\u1ec1n l\u1ee3i gi\u1ea3m gi\u00e1 t\u1ef1 \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng.<\/span><\/li>\n<\/ol>\n<p><b>Gi\u1ea3i ph\u00e1p qu\u1ea3n l\u00fd chi ph\u00ed l\u01b0u tr\u1eef:<\/b><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">L\u1eadp l\u1ecbch ki\u1ec3m tra th\u1eddi gian c\u1eadp nh\u1eadt cu\u1ed1i c\u00f9ng c\u1ee7a c\u00e1c t\u1eadp d\u1eef li\u1ec7u \u0111\u1ec3 ph\u00e2n lo\u1ea1i c\u00e1c b\u1ea3ng \u0111\u1ee7 \u0111i\u1ec1u ki\u1ec7n h\u01b0\u1edfng m\u1ee9c gi\u00e1 l\u01b0u tr\u1eef d\u00e0i h\u1ea1n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ti\u1ebfn h\u00e0nh l\u01b0u tr\u1eef n\u00e2ng cao ho\u1eb7c x\u00f3a b\u1ecf ho\u00e0n to\u00e0n c\u00e1c t\u1eadp d\u1eef li\u1ec7u t\u1eeb c\u00e1c d\u1ef1 \u00e1n \u0111\u00e3 k\u1ebft th\u00fac thay v\u00ec \u0111\u1ec3 l\u01b0u tr\u1eef v\u00f4 th\u1eddi h\u1ea1n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Tuy\u1ec7t \u0111\u1ed1i tr\u00e1nh c\u00e1c thao t\u00e1c ghi ho\u1eb7c ch\u1ec9nh s\u1eeda kh\u00f4ng c\u1ea7n thi\u1ebft l\u00ean c\u00e1c b\u1ea3ng d\u1eef li\u1ec7u \u0111ang ti\u1ebfn g\u1ea7n \u0111\u1ebfn m\u1ed1c 90 ng\u00e0y.<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/gcloudvn.com\/en\/demos-thuc-te-gemini-enterprise-agent-platform\/attachment\/anh-3-14-2\/\" rel=\"attachment wp-att-26649\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-26649\" src=\"https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-3-14.png\" alt=\"\" width=\"600\" height=\"375\" srcset=\"https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-3-14.png 600w, https:\/\/gcloudvn.com\/wp-content\/uploads\/2026\/09\/Anh-3-14-18x12.png 18w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/p>\n<h3><span class=\"ez-toc-section\" id=\"10_Thuc_thi_cac_cau_truy_van_lon_ma_khong_chay_thu_nghiem_Dry_Run\"><\/span><b>10. Th\u1ef1c thi c\u00e1c c\u00e2u truy v\u1ea5n l\u1edbn m\u00e0 kh\u00f4ng ch\u1ea1y th\u1eed nghi\u1ec7m (Dry Run)<\/b><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><span style=\"font-weight: 400;\">T\u00ednh n\u0103ng ch\u1ea1y th\u1eed nghi\u1ec7m (Dry Run) c\u1ee7a BigQuery cho ph\u00e9p ng\u01b0\u1eddi d\u00f9ng \u01b0\u1edbc t\u00ednh ch\u00ednh x\u00e1c dung l\u01b0\u1ee3ng d\u1eef li\u1ec7u s\u1ebd qu\u00e9t m\u00e0 kh\u00f4ng th\u1ef1c s\u1ef1 v\u1eadn h\u00e0nh c\u00e2u l\u1ec7nh v\u00e0 ho\u00e0n to\u00e0n kh\u00f4ng m\u1ea5t chi ph\u00ed. H\u1ec7 th\u1ed1ng s\u1ebd tr\u1ea3 v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng byte d\u1eef li\u1ec7u d\u1ef1 ki\u1ebfn ch\u1ec9 trong v\u00e0i gi\u00e2y.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u1eb7c d\u00f9 \u0111\u00e2y l\u00e0 t\u00ednh n\u0103ng c\u00f3 s\u1eb5n v\u00e0 mi\u1ec5n ph\u00ed, r\u1ea5t nhi\u1ec1u \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt l\u1ea1i b\u1ecf qua b\u01b0\u1edbc n\u00e0y trong quy tr\u00ecnh l\u00e0m vi\u1ec7c h\u00e0ng ng\u00e0y, d\u1eabn \u0111\u1ebfn vi\u1ec7c ch\u1ec9 ph\u00e1t hi\u1ec7n ra c\u00e1c c\u00e2u l\u1ec7nh \u0111\u1eaft \u0111\u1ecf sau khi h\u00f3a \u0111\u01a1n chi ph\u00ed BigQuery \u0111\u00e3 \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u1ee8ng d\u1ee5ng t\u00ednh n\u0103ng ch\u1ea1y th\u1eed nghi\u1ec7m v\u00e0o quy tr\u00ecnh chu\u1ea9n:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">S\u1eed d\u1ee5ng th\u00eam tham s\u1ed1 &#8211;dry_run trong c\u00f4ng c\u1ee5 d\u00f2ng l\u1ec7nh bq tr\u01b0\u1edbc khi kh\u1edfi ch\u1ea1y c\u00e1c c\u00e2u l\u1ec7nh ad-hoc dung l\u01b0\u1ee3ng l\u1edbn.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ki\u1ec3m tra th\u00f4ng s\u1ed1 d\u1ef1 b\u00e1o dung l\u01b0\u1ee3ng \u1edf g\u00f3c ph\u1ea3i giao di\u1ec7n Google Cloud Console tr\u01b0\u1edbc khi nh\u1ea5n n\u00fat th\u1ef1c thi.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u00edch h\u1ee3p b\u01b0\u1edbc ki\u1ec3m tra dung l\u01b0\u1ee3ng t\u1ef1 \u0111\u1ed9ng v\u00e0o quy tr\u00ecnh duy\u1ec7t m\u00e3 ngu\u1ed3n c\u1ee7a c\u00e1c lu\u1ed3ng x\u1eed l\u00fd d\u1eef li\u1ec7u tr\u01b0\u1edbc khi \u0111\u01b0a l\u00ean m\u00f4i tr\u01b0\u1eddng ch\u00ednh th\u1ee9c.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Dong_Hanh_Cung_Gimasys_Trong_Lo_Trinh_Toi_Uu_Chi_Phi_Google_Cloud\"><\/span><b>\u0110\u1ed3ng H\u00e0nh C\u00f9ng Gimasys Trong L\u1ed9 Tr\u00ecnh T\u1ed1i \u01afu Chi Ph\u00ed Google Cloud<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Ki\u1ec3m so\u00e1t v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed BigQuery kh\u00f4ng ch\u1ec9 l\u00e0 vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh c\u00e1c c\u00e2u l\u1ec7nh k\u1ef9 thu\u1eadt \u0111\u01a1n l\u1ebb, m\u00e0 \u0111\u00f2i h\u1ecfi m\u1ed9t chi\u1ebfn l\u01b0\u1ee3c qu\u1ea3n tr\u1ecb h\u1ea1 t\u1ea7ng d\u1eef li\u1ec7u to\u00e0n di\u1ec7n. V\u1edbi v\u1ecb th\u1ebf l\u00e0 \u0110\u1ed1i t\u00e1c Chi\u1ebfn l\u01b0\u1ee3c C\u1ea5p cao (Premier Partner) c\u1ee7a Google Cloud t\u1ea1i Vi\u1ec7t Nam, Gimasys lu\u00f4n s\u1eb5n s\u00e0ng \u0111\u1ed3ng h\u00e0nh c\u00f9ng doanh nghi\u1ec7p trong vi\u1ec7c x\u00e2y d\u1ef1ng v\u00e0 t\u1ed1i \u01b0u h\u1ec7 sinh th\u00e1i \u0111i\u1ec7n to\u00e1n \u0111\u00e1m m\u00e2y.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed9i ng\u0169 chuy\u00ean gia gi\u00e0u kinh nghi\u1ec7m c\u1ee7a <a href=\"https:\/\/gcloudvn.com\/en\/\">Gimasys<\/a> s\u1ebd h\u1ed7 tr\u1ee3 doanh nghi\u1ec7p:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>R\u00e0 so\u00e1t &amp; \u0110\u00e1nh gi\u00e1 to\u00e0n di\u1ec7n:<\/b><span style=\"font-weight: 400;\"> Ph\u00e2n t\u00edch chi ti\u1ebft l\u1ecbch s\u1eed truy v\u1ea5n, c\u1ea5u h\u00ecnh ki\u1ebfn tr\u00fac d\u1eef li\u1ec7u hi\u1ec7n t\u1ea1i \u0111\u1ec3 ch\u1ec9 ra ch\u00ednh x\u00e1c c\u00e1c \u0111i\u1ec3m \u0111ang g\u00e2y l\u00e3ng ph\u00ed ng\u00e2n s\u00e1ch.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u01b0 v\u1ea5n ki\u1ebfn tr\u00fac t\u1ed1i \u01b0u:<\/b><span style=\"font-weight: 400;\"> Thi\u1ebft l\u1eadp m\u00f4 h\u00ecnh ph\u00e2n v\u00f9ng, gom nh\u00f3m, c\u1ea5u h\u00ecnh h\u1ea1n m\u1ee9c chi ti\u00eau v\u00e0 l\u1ef1a ch\u1ecdn g\u00f3i chi ph\u00ed BigQuery ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi quy m\u00f4 v\u1eadn h\u00e0nh.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u00e0o t\u1ea1o &amp; Chuy\u1ec3n giao quy tr\u00ecnh:<\/b><span style=\"font-weight: 400;\"> N\u00e2ng cao n\u0103ng l\u1ef1c cho \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt n\u1ed9i b\u1ed9 v\u1ec1 c\u00e1c chu\u1ea9n m\u1ef1c khai th\u00e1c d\u1eef li\u1ec7u an to\u00e0n, hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m chi ph\u00ed.<\/span><\/li>\n<\/ul>\n<h2><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span><b>Conclusion<\/b><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">BigQuery l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00f4 c\u00f9ng m\u1ea1nh m\u1ebd, nh\u01b0ng vi\u1ec7c qu\u1ea3n l\u00fd chi ph\u00ed BigQuery \u0111\u00f2i h\u1ecfi s\u1ef1 c\u1ea9n tr\u1ecdng v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc k\u1ef9 thu\u1eadt chu\u1ea9n m\u1ef1c. B\u1eb1ng c\u00e1ch ch\u1ee7 \u0111\u1ed9ng kh\u1eafc ph\u1ee5c 10 sai l\u1ea7m ph\u1ed5 bi\u1ebfn n\u00eau tr\u00ean, doanh nghi\u1ec7p ho\u00e0n to\u00e0n c\u00f3 th\u1ec3 c\u1eaft gi\u1ea3m t\u1eeb 30% \u0111\u1ebfn 50% chi ph\u00ed v\u1eadn h\u00e0nh h\u00e0ng th\u00e1ng m\u00e0 v\u1eabn \u0111\u1ea3m b\u1ea3o hi\u1ec7u n\u0103ng x\u1eed l\u00fd d\u1eef li\u1ec7u t\u1ed1i \u01b0u.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">H\u00e3y li\u00ean h\u1ec7 ngay v\u1edbi Gimasys \u0111\u1ec3 nh\u1eadn \u0111\u01b0\u1ee3c s\u1ef1 h\u1ed7 tr\u1ee3 tr\u1ef1c ti\u1ebfp t\u1eeb c\u00e1c chuy\u00ean gia h\u00e0ng \u0111\u1ea7u v\u1ec1 Google Cloud, gi\u00fap doanh nghi\u1ec7p t\u1ed1i \u01b0u h\u00f3a chi ph\u00ed h\u1ea1 t\u1ea7ng v\u00e0 khai th\u00e1c t\u1ed1i \u0111a gi\u00e1 tr\u1ecb t\u1eeb ngu\u1ed3n t\u00e0i nguy\u00ean d\u1eef li\u1ec7u!<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Trong qu\u00e1 tr\u00ecnh khai th\u00e1c v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u l\u1edbn tr\u00ean n\u1ec1n t\u1ea3ng Google Cloud, BigQuery lu\u00f4n l\u00e0 l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u nh\u1edd kh\u1ea3 n\u0103ng truy v\u1ea5n t\u1ed1c \u0111\u1ed9 cao v\u00e0 ki\u1ebfn tr\u00fac kh\u00f4ng m\u00e1y ch\u1ee7 linh ho\u1ea1t. Tuy&hellip;<\/p>","protected":false},"author":2,"featured_media":26614,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1,135],"tags":[],"class_list":["post-26699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kienthuc","category-google-cloud-platform","entry","has-media"],"_links":{"self":[{"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/posts\/26699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/comments?post=26699"}],"version-history":[{"count":2,"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/posts\/26699\/revisions"}],"predecessor-version":[{"id":26701,"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/posts\/26699\/revisions\/26701"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/media\/26614"}],"wp:attachment":[{"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/media?parent=26699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/categories?post=26699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gcloudvn.com\/en\/wp-json\/wp\/v2\/tags?post=26699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}