COF-C03 - Performance Optimization, Querying, and Transformation - Section 4.5

Transform data with SQL using aggregate functions, window functions, joins, and cardinality-estimation functions.

Transform and analyse data with SQL: aggregate functions with GROUP BY, window functions for running totals and rankings over partitions, the join types Snowflake supports, and estimation functions such as APPROX_COUNT_DISTINCT and APPROX_PERCENTILE for fast approximate answers on very large data. Match a transformation need to the right construct.

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