How to install and test ClickHouse on Microsoft Windows.

The query_log table in the system database keeps track of all your queries, including:

• how much memory the query consumed, and
• how much CPU time was needed

Are you getting the error "Cannot append data in format Parquet to file" error in ClickHouse?

Question: How do I show all queries involving materialized views in the last 60m?

Question: How do I import JSON arrays and how can I query the inner objects?

Question​

How can I quickly recreate a table and its data using just copy/paste across different terminals?

I want to export data segregating the path in S3 bucket to follow a structure like:

• 2022
  • 1
  • 2
  • ...
  • 12
• 2021
  • 1
  • 2
  • ...
  • 12

and so on ...

ClickHouse has a built-in debugger and introspection capabilities.

Using INTO OUTFILE Clause​

Add an INTO OUTFILE clause to your query.

Below are some basics of using the S3 table engine to read parquet files.