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developer-roadmap/roadmaps/python-data-analysis/content/merging--joining@Rq9TFEEJnjEgVa1DiJxFz.md
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Arik Chakma 274082fd77 feat: clean roadmap content and sync scripts (#10181)
* refactor: clean to roadmap content

* refactor: move shared helpers into scripts/lib
2026-07-28 05:45:17 +06:00

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Merging & Joining

Pandas provides merge() and join() for combining DataFrames based on common columns or indices. Merge supports inner, left, right, and outer joins, mirroring SQL JOIN behavior. concat() stacks DataFrames vertically or horizontally. These operations are used to combine data from multiple sources into a single analysis-ready table.

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