pranavbhole commented on PR #15626:
URL: https://github.com/apache/druid/pull/15626#issuecomment-1878107982
this is great optimization to avoid extra lookup calls. We can take one step
further and could potentially reverse indexing of lookup values (Value->
List<Keys>) at lookup creation and use it to in non injective cases in filters.
`LOOKUP(sku, 'sku_to_name') = 'WhizBang Sprocket'` could be rewritten to
`sku in ('WB00013', 'WB00014', 'WB00015')`
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