Dreamdata's Steffan Hedebrandt on why LinkedIn drives 30% of SQL pipeline, the 272-day buying journey and a 7.7x lift in ROI ...
Tech français consacré aux nouvelles technologies (internet, logiciel, matériel, mobilité, entreprise) et au jeu vidéo PC et consoles.
ROW_NUMBER() OVER (PARTITION BY s.class_id ORDER BY AVG(g.grade_point) DESC NULLS LAST) as class_rank, ROW_NUMBER() OVER (ORDER BY AVG(g.grade_point) DESC NULLS LAST) as overall_rank, -- 计算各等级成绩数量 ...
Final project for the Data Warehouse course. We act as a combined Data Engineering + Business Intelligence team: extract transactional data from two operational sources, transform it into an ...
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