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Day 23 — Combining Queries (Union of Data) | Combining results from multiple queries or datasets.
Day 23 — Combining Queries (Union of Data) Concept: Combining results from multiple queries or datasets. In SQL we use UNION / UNION ALL, while in Python (Pandas) we use concat(). This is useful for merging similar structured data. 1. SQL Concept — UNION / UNION ALL Used to combine results of two or more SELECT queries. Example Tables ...
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