Add a free browser-runnable SQL practice resource to References#37
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datadriven-io wants to merge 1 commit into
Open
Add a free browser-runnable SQL practice resource to References#37datadriven-io wants to merge 1 commit into
datadriven-io wants to merge 1 commit into
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One-line addition to the existing References list: SQL practice problems on DataDriven — free SQL problems that run directly in the browser, covering the same ground as the HackerRank set here (joins, aggregations, window functions). Useful for readers who finish these solutions and want more interview-style practice. Matches the existing list format.