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Yes - you can upsert a row in ClickHouse! It behaves differently than with other databases, so it's important to understand how upserts are implemented using the ReplacingMergeTree table engine, including tips on how to avoid using FINAL in a query.

Rich Raposa
Director, Global Learning, ClickHouse

How to Upsert Rows into ClickHouse

Linux, macOS, FreeBSD

ClickHouse has a great collection of table functions for reading files from all types of different locations, including files on the web, S3, GCS and Azure Blob Storage. ClickHouse also reads data in dozens of different formats, like CSV, TSV, JSON, Parquet, Avro, and more. Learn how to combine these two capabilities to read a file from basically anywhere and in any format.

How to Ingest Files into ClickHouse

Learn how to use common table expressions (CTEs) in ClickHouse, including how to use a query result as a CTE.

Videos / How to

How Common Table Expressions (CTEs) Work in ClickHouse

Rich Raposa Director, Global Learning, ClickHouse

Recent videos