Articles by Shiv Iyer

About Shiv Iyer
Open Source Database Systems Engineer with a deep understanding of Optimizer Internals, Performance Engineering, Scalability and Data SRE. Shiv currently is the Founder, Investor, Board Member and CEO of multiple Database Systems Infrastructure Operations companies in the Transaction Processing Computing and ColumnStores ecosystem. He is also a frequent speaker in open source software conferences globally.
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ClickHouse Row Number Functions for High Performance
ClickHouse Functions

ClickHouse Row Number Functions for High Performance

Shiv Iyer
Introduction Row numbering methods play a crucial role in ClickHouse’s performance, particularly when dealing with extensive datasets and intricate queries. Different approaches, such as using the ROW_NUMBER() function, ARRAY JOIN clause, WITH ORDINALITY syntax, or […]
Inside the ClickHouse Query Execution Pipeline
ClickHouse Internals

ClickHouse Query Execution Pipeline: A Look Inside

Shiv Iyer
Introduction When it comes to high-performance analytics, ClickHouse stands out as a powerful columnar database. Behind its blazing-fast query processing lies a sophisticated execution pipeline that optimizes query performance and enables efficient data retrieval. In […]