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tsvreader's Introduction

tsvreader - fast reader for tab-separated data

Features

  • Optimized for speed. May read more than 20M rows per second on a single CPU core.
  • Compatible with TSV (aka TabSeparated) format used in ClickHouse responses. See chclient - clickhouse client built on top of tsvreader.
  • May read rows with variable number of columns using Reader.HasCols. This functionality allows reading WITH TOTALS row from ClickHouse responses and BlockTabSeparated responses.

Documentation

See these docs.

tsvreader's People

Contributors

valyala avatar

Stargazers

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Watchers

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Forkers

billhathaway harshavardhana forkkit taipanbox ahlemdr mashenjun allanpk716

tsvreader's Issues

Options to retrieve number of columns SELECT result?

Hello!

Thank you for a great library! It handles tens of gigabytes without any problems :)

But I need little bit more information from tsvreader.Reader. Is it possible to get a number of rows in SELECT operation using it?

I'm trying to solve case when I received zero rows and need to apply custom logic.

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