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CSV Top Records per Group

Keep the highest N numeric records within each group.

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CSV top N per group online

Keep the highest N numeric records within each group. Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

How to use it

Paste the multi-line input in the format shown below. Set group column, numeric column, rows per group. Choose Run tool. Review the output, then copy or download it.

Options and example settings

Option	Choices / value	Example default
Group column	Enter group column.	team
Numeric column	Enter numeric column.	amount
Rows per group	Enter rows per group.	1

Worked examples

Use this when inspecting structured input or preparing a data or code artifact. Generated commands and configurations remain text until you review and use them yourself.

Reproducible worked example

Settings: Group column: team; Numeric column: amount; Rows per group: 1

Input:

name,team,amount
Anna,A,10
Ben,B,20
Cara,A,30

With the input and settings above, the tool produces:

Output:

name,team,amount
Cara,A,30
Ben,B,20

The example output has 3 lines. Compare its order, separators and whitespace with the input before copying the result.

Limitations and common mistakes

Results reflect your supplied input and selected settings. Check the worked example and output before reuse.
Combined input is bounded to 150,000 characters; output text is bounded to 1.2 million characters. Some algorithms impose smaller limits, stated in their error messages.

Frequently asked questions

What format should I enter?

Paste the multi-line input in the format shown below. The worked example shows the supported structure and actual output.

How can I retain the highest N numeric records within each group in CSV data online?

Paste the multi-line input in the format shown below. Set group column, numeric column, rows per group. Choose Run tool. Review the output, then copy or download it.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.