#data processing Development Tutorials & Tips | Roast Dev

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ETL Unleashed: Transform Raw Data into Game-Changing Insights

How the humble process of Extract, Transform, and Load turns raw data into a gold mine of insights.In a world obsessed with AI and real-time analytics, it's easy to overlook the foundational process t...

21.09.2025 0 Read More

Turbocharge Your Queries with COUNT DISTINCT: A Clever Data Dump Hack

SQL COUNT DISTINCT has been slow. It is, in essence, a grouping operation, which keeps traversed grouping field values for later comparisons. When the result set is too large, the data needs to be wri...

11.08.2025 0 Read More

ETL Unleashed: Transform Raw Data into Game-Changing Insights

Turbocharge Your Queries with COUNT DISTINCT: A Clever Data Dump Hack

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