CSV join tool
Join two tables by selected keys with unmatched-row output.
How to use CSV join tool
- Choose a source file. If the tool accepts multiple files, arrange them in the order you want.
- Set left key column, right key column, join.
- Run csv join tool, review the output, then use the available copy or download controls.
What this tool supports
Join two tables by selected keys with unmatched-row output.
- Left key column
- Set this value for your task.
- Right key column
- Set this value for your task.
- Join
- left · inner · full
Limits and processing
CSV/XLSX inputs are capped at 10 MB each, 200 columns and 20,000 rows; joined output is capped at 20,000 rows. JSONPath script/filter evaluation is disabled. Other operations apply their visible controls and text limits.
Frequently asked questions
What does csv join tool do?
Join two tables by selected keys with unmatched-row output.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
CSV/XLSX inputs are capped at 10 MB each, 200 columns and 20,000 rows; joined output is capped at 20,000 rows. JSONPath script/filter evaluation is disabled. Other operations apply their visible controls and text limits.