fix: Support GROUP BY () and tuple sublists - #224
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Signed-off-by: Alex Qyoun-ae <4062971+MazterQyou@users.noreply.github.com>
ovr
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Jul 22, 2026
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This PR flattens tuple expressions in
GROUP BYfollowing PostgreSQL sublist semantics, soGROUP BY ()(empty grouping set) andGROUP BY (a, b)plan correctly. Related tests are included.