● mastered · kind concept · level 5 · 100h
Declarative querying of relational data: joins, aggregation, window functions, indexing. Still the most durable data skill — every warehouse and transform tool speaks it.
● mastered · kind concept · level 5 · 100h
Declarative querying of relational data: joins, aggregation, window functions, indexing. Still the most durable data skill — every warehouse and transform tool speaks it.