Description
Based on the semantic of a query plan, we can derive data constrains (e.g. if a filter defines a > 10, we know that the output data of this filter satisfy the constrain of a > 10 and a is not null). We should build a framework to derive and propagate constrains in the logical plan, which can help us to build more advanced optimizations.
Attachments
Attachments
Issue Links
- is related to
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SPARK-19609 Broadcast joins should pushdown join constraints as Filter to the larger relation
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- Resolved
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- links to
