Reviewed by Aditya Kumar · Last reviewed 2026-03-24
**Architectural Logic**: Differ in tie handling—affects ranking semantics. **row_number**: Unique sequential (1,2,3,4); arbitrary tie-break. **rank**: Sequential with gaps for ties (1,2,2,4). **dense_rank**: Sequential without gaps (1,2,2,3). **Example**: Scores 100,90,90,80....
Architectural Logic: Differ in tie handling—affects ranking semantics. row_number: Unique sequential (1,2,3,4); arbitrary tie-break. rank: Sequential with gaps for ties (1,2,2,4). dense_rank: Sequential without gaps (1,2,2,3). Example: Scores 100,90,90,80. row_number: 1,2,3,4. rank: 1,2,2,4. dense_rank: 1,2,2,3. Use: row_number for pagination/dedup; rank/dense_rank for leaderboards. Best Practice: Always ORDER BY in OVER; PARTITION BY for groups. Choose based on business logic.
Red Flag: Using row_number for ranking when ties matter—wrong semantics. Pro-Move: State tie behavior; rank vs dense_rank for leaderboards; row_number for dedup (QUALIFY in Snowflake).
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