[CALCITE-5787] The RelMdInputFieldsUsed is introduced to track the usage of input fields #4764
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…age of input fields
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@julianhyde I have reimplemented this Jira according to your requirements. Please take a look when you have time. |
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I have revised it according to the review comments in Jira. It would be great if someone could help review it. |
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See CALCITE-5787
Given the previous misunderstanding, I revised the logic, changing the return value of the
getInputFieldsUsedmethod fromList<ImmutableBitSet>toImmutableBitSet. This change is somewhat blocking. I discussed it with @julianhyde on Jira, and considering that the previous PR was recently merged and hasn't been released yet, I think we can accept this change.The SemiJoinRule was also improved by using a new implementation.