Rule 15: Use Merge Interval for OR expansion detection#349
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…on detection Rule 13: Detect GetRangeThroughConvert (CONVERT/CAST on column) in addition to GetRangeWithMismatchedTypes, with distinct messages. Rule 14: Warn when cache hits (rewinds) < 5x cache misses (rebinds). Critical when hits < misses (net negative). Replaces confusing rebinds*2 >= rewinds condition. Rule 15: Use Merge Interval ancestor instead of join ancestor to detect OR expansion. Merge Interval + TopN Sort is the definitive fingerprint for this pattern. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
HasJoinAncestorwithHasMergeIntervalAncestor— the Merge Interval + TopN Sort pattern is the definitive fingerprint for OR expansion in join predicates, more reliable than checking for a join ancestorTest plan
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