8000 Add FORMAT_BYTES and FORMAT_NANO_TIME functions (#20872) by ti-chi-bot · Pull Request #21192 · pingcap/docs · GitHub
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Add FORMAT_BYTES and FORMAT_NANO_TIME functions (#20872) #21192

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This is an automated cherry-pick of #20872

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dveeden and others added 9 commits June 17, 2025 06:36
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
Co-authored-by: Grace Cai <qqzczy@126.com>
Co-authored-by: Grace Cai <qqzczy@126.com>
@ti-chi-bot ti-chi-bot added lgtm size/M Denotes a PR that changes 30-99 lines, ignoring generated files. type/cherry-pick-for-release-8.5 This PR is cherry-picked to release-8.5 from a source PR. labels Jun 17, 2025
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Summary of Changes

Hello @ti-chi-bot, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on enhancing the TiDB documentation by introducing a new section for utility functions. Specifically, it adds documentation for FORMAT_BYTES() and FORMAT_NANO_TIME(), which are designed to improve data readability by converting raw byte counts and nanosecond durations into more intuitive, human-friendly formats. The changes also ensure these new documentation pages are properly linked within the existing Table of Contents structure.

Highlights

  • New Utility Functions Documentation: A new documentation page has been added for two new utility functions: FORMAT_BYTES() and FORMAT_NANO_TIME().
  • FORMAT_BYTES() Function: The FORMAT_BYTES() function converts a number of bytes into a human-readable format, such as '10.00 MiB'.
  • FORMAT_NANO_TIME() Function: The FORMAT_NANO_TIME() function converts a number of nanoseconds into a human-readable time format, such as '1.00 ms'.
  • Table of Contents Integration: The new 'Utility Functions' documentation has been integrated into the Table of Contents for both the general TiDB documentation and the TiDB Cloud documentation.
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Code Review

This PR adds documentation for FORMAT_BYTES and FORMAT_NANO_TIME, including a new markdown file and updates to TOC.md and TOC-tidb-cloud.md. I suggest minor wording improvements for clarity and consistency.

@@ -595,6 +595,7 @@
- [Sequence Functions](/functions-and-operators/sequence-functions.md)
- [List of Expressions for Pushdown](/functions-and-operators/expressions-pushed-down.md)
- [TiDB Specific Functions](/functions-and-operators/tidb-functions.md)
- [Utility Functions](/functions-and-operators/utility-functions.md)

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medium

For consistency with TOC.md, place 'Utility Functions' after 'Sequence Functions' (line 595).


## `FORMAT_BYTES()`

The `FORMAT_BYTES()` function converts a number of bytes into a human-readable format.

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low

Rephrase to directly address the user: "The FORMAT_BYTES() function helps you convert bytes into a human-readable format." This aligns with using the second person ('you')1.

Style Guide References

Suggested change
The `FORMAT_BYTES()` function converts a number of bytes into a human-readable format.
The `FORMAT_BYTES()` function helps you convert bytes into a human-readable format.

Footnotes

  1. Write in second person ('you') when addressing users. (link)

- [TiDB Specific Functions](/functions-and-operators/tidb-functions.md)
- [Precision Math](/functions-and-operators/precision-math.md)
- [Set Operations](/functions-and-operators/set-operators.md)

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low

Remove trailing spaces for cleaner Markdown.

Suggested change
- [Set Operations](/functions-and-operators/set-operators.md)
- [Set Operations](/functions-and-operators/set-operators.md)

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hfxsd commented Jun 17, 2025

/approve

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ti-chi-bot bot commented Jun 17, 2025

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hfxsd

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@ti-chi-bot ti-chi-bot bot added the approved label Jun 17, 2025
@ti-chi-bot ti-chi-bot bot merged commit bd5d337 into pingcap:release-8.5 Jun 17, 2025
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