【從 teradata 到 BigQuery】美國職棒大聯盟資料倉儲搬遷實錄
#搬遷背景
美國職棒大聯盟 (MLB) 過去打造的 data pipeline 在建置時並沒有要做大數據分析的預期,所以多數對模型而言並不適用。存放於 teradata 中的資料也無法直接讓 30 支球隊存取,必須將資料複製到雲端上的 30 個獨立資料夾,讓球隊各自存取,球隊亦無法雙向向聯盟回饋數據,下述種種阻礙迫使 MLB 必須改變:
1⃣ 購退票、轉賣票券等行為導致已備份的歷史資料仍頻繁異動,需不斷再更新。
2⃣ 若分享的資料要新增欄位或改變格式,歷史資料需重新複製。
3⃣ 球隊須設定資料更新的通知,否則不會發現。
4⃣ 無法及時分享資料,頂多每五分鐘更新一次。
5⃣ 目標是提供具商業價值的分析給 MLB 跟球隊,但花費大量時間處理備份事宜。
6⃣ 當 MLB 開始尋找新的 BI 平台,發現既有倉儲和第三方工具整合有限。
#搬遷Tips
💡 新專案直接在 BigQuery 上開案。
💡 在 dependency graph 中找出 table 與 ETL jobs 間的關連,從關聯較少的開始搬遷。
💡 搬遷過程中,在 BigQuery 即時產生 teradata ETL 的副本,資料即時程度在 1 分鐘內,讓數據團隊可及早在 BigQuery 上使用資料。
💡 可在 GCP Marketplace 使用 #第三方轉譯器工具 CompilerWorks:自動化且正確地將 teradata SQL 轉換成 BigQuery SQL。
💡 ETL 搬遷的邏輯驗證可在 BigQuery 中完成。
#BigQuery解放MLB技術能量
✅ 球隊、聯盟員工存取同一份資料,MLB 無需處理歷史資料異動時,備份更新的問題。
✅ 性能與效率:大型查詢時間減少 50%。
✅ 完善資安功能:G Suite 提供身份驗證功能,Google Cloud IAM 負責處理權限控管。
✅ 友善體驗:Console 和 BigQuery API 極易上手,入門門檻低。
✅ 靈活性、降低成本:允許按需求量收費,不必承諾使用量,以便逐步上線。支援自動備份、自動擴展。
▎報名收看 Google 官方中文演講場次:https://bit.ly/2ZMYzv5
▎Next OnAir Week 1 精華整理:https://bit.ly/3jpSwnU
#GoogleCloud #NextOnAir #NextRecap
#iKalaCloud #數位轉型就找iKala
同時也有9部Youtube影片,追蹤數超過6萬的網紅網上學習平台Beginneros,也在其Youtube影片中提到,#Excel #MicrosoftExcel #教學 香港工時冠絕全球,使不少打工仔苦不堪言,剛剛投身職場或是電腦新手的你,不想因為整理資料而加班?立即上課學會多個Excel的基本功能,助你減少處理資料的時間,快速處理數據,這樣就能準時下班! -------- 報讀課程 -------- 完整課程...
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data table中文 在 國家衛生研究院-論壇 Facebook 的最讚貼文
「Epidemiologic and Clinical Characteristics of Novel Coronavirus Infections Involving 13 Patients Outside Wuhan, China(2020/02/07)+中文摘要轉譯」
➥中文摘要轉譯:
截至2/4日,北京報告13例,大多為年輕健康人。症狀輕微且無人死亡。與過去報導一致,健康人感染後預後較佳。
註:初期流行病學易有偏誤,不可推估大流行時狀況。(財團法人國家衛生研究院-郭書辰醫師整理)
➥In December 2019, cases of pneumonia appeared in Wuhan, China. The etiology of these infections was a novel coronavirus (2019-nCoV),1,2 possibly connected to zoonotic or environmental exposure from the seafood market in Wuhan. Human-to-human transmission has accounted for most of the infections, including among health care workers.3,4 The virus has spread to different parts of China and at least 26 other countries.1 A high number of men have been infected, and the reported mortality rate has been approximately 2%, which is lower than that reported from other coronavirus epidemics including severe acute respiratory syndrome (SARS; mortality rate, >40% in patients aged >60 years)5 and Middle East respiratory syndrome (MERS; mortality rate, 30%).6 However, little is known about the clinical manifestations of 2019-nCoV in healthy populations or cases outside Wuhan. We report early clinical features of 13 patients with confirmed 2019-nCoV infection admitted to hospitals in Beijing.
「Methods」
Data were obtained from 3 hospitals in Beijing, China (Beijing Tsinghua Changgung Hospital, School of Medicine, Tsinghua University [8 patients], Beijing Anzhen Hospital, Capital Medical University [4 patients], and College of Respiratory and Critical Care Medicine, Chinese PLA General Hospital [1 patient]). Patients were hospitalized from January 16, 2020, to January 29, 2020, with final follow-up for this report on February 4, 2020. Patients with possible 2019-nCoV were admitted and quarantined, and throat swab samples were collected and sent to the Chinese Center for Disease Control and Prevention for detection of 2019-nCoV using a quantitative polymerase chain reaction assay.3 Chest radiography or computed tomography was performed. Data were obtained as part of standard care. Patients were transferred to a specialized hospital after diagnosis. This study was approved by the ethics commissions of the 3 hospitals, with a waiver of informed consent.
「Results」
The median age of the patients was 34 years (25th-75th percentile, 34-48 years); 2 patients were children (aged 2 years and 15 years), and 10 (77%) were male. Twelve patients either visited Wuhan, including a family (parents and son), or had family members (grandparents of the 2-year-old child) who visited Wuhan after the onset of the 2019-nCoV epidemic (mean stay, 2.5 days). One patient did not have any known contact with Wuhan.
Twelve patients reported fever (mean, 1.6 days) before hospitalization. Symptoms included cough (46.3%), upper airway congestion (61.5%), myalgia (23.1%), and headache (23.1%) (Table). No patient required respiratory support before being transferred to the specialty hospital after a mean of 2 days. The youngest patient (aged 2 years) had intermittent fever for 1 week and persistent cough for 13 days before 2019-nCoV diagnosis. Levels of inflammatory markers such as C-reactive protein were elevated, and numbers of lymphocytes were marginally elevated (Table).
Four patients had chest radiographs and 9 had computed tomography. Five images did not demonstrate any consolidation or scarring. One chest radiograph demonstrated scattered opacities in the left lower lung; in 6 patients, ground glass opacity was observed in the right or both lungs (Figure). As of February 4, 2020, all the patients recovered, but 12 were still being quarantined in the hospital.
➥Author: De Chang, Minggui Lin, Lai Wei, et al.
➥Link: (JAMA) https://jamanetwork.com/journals/jama/fullarticle/2761043
衛生福利部
疾病管制署 - 1922防疫達人
疾病管制署
國家衛生研究院-論壇
#2019COVID19Academic
data table中文 在 國家衛生研究院-論壇 Facebook 的最佳貼文
「Epidemiologic and Clinical Characteristics of Novel Coronavirus Infections Involving 13 Patients Outside Wuhan, China(2020/02/07)+中文摘要轉譯」
➥中文摘要轉譯:
截至2/4日,北京報告13例,大多為年輕健康人。症狀輕微且無人死亡。與過去報導一致,健康人感染後預後較佳。
註:初期流行病學易有偏誤,不可推估大流行時狀況。(財團法人國家衛生研究院-郭書辰醫師整理)
➥In December 2019, cases of pneumonia appeared in Wuhan, China. The etiology of these infections was a novel coronavirus (2019-nCoV),1,2 possibly connected to zoonotic or environmental exposure from the seafood market in Wuhan. Human-to-human transmission has accounted for most of the infections, including among health care workers.3,4 The virus has spread to different parts of China and at least 26 other countries.1 A high number of men have been infected, and the reported mortality rate has been approximately 2%, which is lower than that reported from other coronavirus epidemics including severe acute respiratory syndrome (SARS; mortality rate, >40% in patients aged >60 years)5 and Middle East respiratory syndrome (MERS; mortality rate, 30%).6 However, little is known about the clinical manifestations of 2019-nCoV in healthy populations or cases outside Wuhan. We report early clinical features of 13 patients with confirmed 2019-nCoV infection admitted to hospitals in Beijing.
「Methods」
Data were obtained from 3 hospitals in Beijing, China (Beijing Tsinghua Changgung Hospital, School of Medicine, Tsinghua University [8 patients], Beijing Anzhen Hospital, Capital Medical University [4 patients], and College of Respiratory and Critical Care Medicine, Chinese PLA General Hospital [1 patient]). Patients were hospitalized from January 16, 2020, to January 29, 2020, with final follow-up for this report on February 4, 2020. Patients with possible 2019-nCoV were admitted and quarantined, and throat swab samples were collected and sent to the Chinese Center for Disease Control and Prevention for detection of 2019-nCoV using a quantitative polymerase chain reaction assay.3 Chest radiography or computed tomography was performed. Data were obtained as part of standard care. Patients were transferred to a specialized hospital after diagnosis. This study was approved by the ethics commissions of the 3 hospitals, with a waiver of informed consent.
「Results」
The median age of the patients was 34 years (25th-75th percentile, 34-48 years); 2 patients were children (aged 2 years and 15 years), and 10 (77%) were male. Twelve patients either visited Wuhan, including a family (parents and son), or had family members (grandparents of the 2-year-old child) who visited Wuhan after the onset of the 2019-nCoV epidemic (mean stay, 2.5 days). One patient did not have any known contact with Wuhan.
Twelve patients reported fever (mean, 1.6 days) before hospitalization. Symptoms included cough (46.3%), upper airway congestion (61.5%), myalgia (23.1%), and headache (23.1%) (Table). No patient required respiratory support before being transferred to the specialty hospital after a mean of 2 days. The youngest patient (aged 2 years) had intermittent fever for 1 week and persistent cough for 13 days before 2019-nCoV diagnosis. Levels of inflammatory markers such as C-reactive protein were elevated, and numbers of lymphocytes were marginally elevated (Table).
Four patients had chest radiographs and 9 had computed tomography. Five images did not demonstrate any consolidation or scarring. One chest radiograph demonstrated scattered opacities in the left lower lung; in 6 patients, ground glass opacity was observed in the right or both lungs (Figure). As of February 4, 2020, all the patients recovered, but 12 were still being quarantined in the hospital.
➥Author: De Chang, Minggui Lin, Lai Wei, et al.
➥Link: (JAMA) https://jamanetwork.com/journals/jama/fullarticle/2761043
衛生福利部
疾病管制署 - 1922防疫達人
疾病管制署
國家衛生研究院-論壇
#2019COVID19Academic
data table中文 在 網上學習平台Beginneros Youtube 的最佳解答
#Excel #MicrosoftExcel #教學
香港工時冠絕全球,使不少打工仔苦不堪言,剛剛投身職場或是電腦新手的你,不想因為整理資料而加班?立即上課學會多個Excel的基本功能,助你減少處理資料的時間,快速處理數據,這樣就能準時下班!
-------- 報讀課程 --------
完整課程 ► https://goo.gl/Uk4G4m
導師 ► George
-------- 聯絡我們 --------
網站 ► https://www.beginneros.com/
Facebook ► https://www.facebook.com/beginneros/
Instagram ► @beginneros
電子郵件 ► contact@beginneros.com
data table中文 在 網上學習平台Beginneros Youtube 的最佳解答
#Excel #MicrosoftExcel #教學
香港工時冠絕全球,使不少打工仔苦不堪言,剛剛投身職場或是電腦新手的你,不想因為整理資料而加班?立即上課學會多個Excel的基本功能,助你減少處理資料的時間,快速處理數據,這樣就能準時下班!
-------- 報讀課程 --------
完整課程 ► https://goo.gl/Uk4G4m
導師 ► George
-------- 聯絡我們 --------
網站 ► https://www.beginneros.com/
Facebook ► https://www.facebook.com/beginneros/
Instagram ► @beginneros
電子郵件 ► contact@beginneros.com
data table中文 在 網上學習平台Beginneros Youtube 的最佳貼文
#Excel #MicrosoftExcel #教學
香港工時冠絕全球,使不少打工仔苦不堪言,剛剛投身職場或是電腦新手的你,不想因為整理資料而加班?立即上課學會多個Excel的基本功能,助你減少處理資料的時間,快速處理數據,這樣就能準時下班!
-------- 報讀課程 --------
完整課程 ► https://goo.gl/Uk4G4m
導師 ► George
-------- 聯絡我們 --------
網站 ► https://www.beginneros.com/
Facebook ► https://www.facebook.com/beginneros/
Instagram ► @beginneros
電子郵件 ► contact@beginneros.com
data table中文 在 臺灣無障礙標章受害者聯盟 - Facebook 的美食出口停車場
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data table中文 在 EP5】「DataTable」 3分鐘建立超強表格; 中文化、美化、響應式 的美食出口停車場
DataTable 3分鐘建立超強表格; 中文化、美化、響應式範列網頁在這:http://promooo.info/Projects/Plug ... ... <看更多>