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Explain the difference between RANGE and ROWS window frames, and when named windows help.

Two queries that look identical except for ROWS vs RANGE return different numbers, and most candidates cannot say why. The signal is knowing RANGE groups by value (peers) while ROWS counts physical rows.

Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.

Two queries that look identical except for ROWS vs RANGE return different numbers, and most candidates cannot say why. The signal is knowing RANGE groups by value (peers) while ROWS counts physical rows.

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