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datafusion::optimizer::filter_null_join_keys - Rust
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Module filter_null_join_keys

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FilterNullJoinKeys adds filters to join inputs when input isn’t nullable

Structs§

FilterNullJoinKeys
The FilterNullJoinKeys rule will identify joins with equi-join conditions where the join key is nullable and then insert an IsNotNull filter on the nullable side since null values can never match.