fix: preserve state in DistinctMedianAccumulator::evaluate() for window frame queries #19887
+28
−4
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sqllogictest
Jefffrey
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Jan 19, 2026
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Which issue does this PR close?
retract_batchcan still exhibit buggy behaviour #19612.Rationale for this change
The
DistinctMedianAccumulator::evaluate()method was usingstd::mem::take()which consumed the internal state, causing subsequent calls to return incorrect results. This was the last remaining item from #19612What changes are included in this PR?
DistinctMedianAccumulator::evaluate()to use.iter()instead ofstd::mem::take()to preserve internal state across multiple callsAre these changes tested?
Yes, added a sqllogictest
Are there any user-facing changes?
No