Lukas Eder • 2/6/2023

The Performance Impact of SQL’s FILTER Clause

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This technical article investigates whether SQL's FILTER clause has a performance impact compared to using CASE expressions within aggregate functions. Focusing on PostgreSQL, it presents benchmark results showing a consistent performance advantage for the FILTER syntax. The post also discusses SQL dialect support and includes practical query examples.

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#sql #postgresql #Query Optimization

The Performance Impact of SQL’s FILTER Clause

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