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Dandandan
changed the title
Add projection to HashJoinExec to avoid unecessary output creation
Add projection to HashJoinExec to avoid unecessary output creation
Jun 26, 2023
Is your feature request related to a problem or challenge?
Currently
HashJoinExec
returns all the columns from both sides of the join.We can add the necessary output columns so we can save some work in gathering values (
take
) from batches based on matching indices.This is similar to #5436
Describe the solution you'd like
Add projection to hashjoinexec, use it to reduce output.
Describe alternatives you've considered
No response
Additional context
No response
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