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Explain Redshift Data Distribution (EVEN, KEY, ALL).

SQLmedium0.4 min readPremium
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Impetus
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Expert AnswerPremium
88 wordsInterview-ready
**Architectural Logic**: Distribution determines data placement—affects join and aggregation performance. **EVEN**: Round-robin; default; when no clear join key. **KEY**: By distribution key; co-locates same key; use for join key. **ALL**: Full copy on each node; for small dimension tables. **Choose KEY**: Large fact–fact or fact–dimension joins on same key. **Choose ALL**: Small dimensions joined to large facts (avoids broadcast). **Choose EVEN**: No join benefit....
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