External Table Primary key support #7755
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# Please enter a commit message to explain why this merge is necessary, # especially if it merges an updated upstream into a topic branch. # # Lines starting with '#' will be ignored, and an empty message aborts # the commit.
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ozankabak
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Oct 6, 2023
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I reviewed this PR and it looks good to me. It'd be good to get some community feedback in case something escaped my eye.
alamb
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This looks really nice to me -- thank you @mustafasrepo
I think we should
- add a round trip test for the new protobuf code,
- Error if unsupported constraints are used
but otherwise, it looks good to go to me.
alamb
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Oct 7, 2023
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Which issue does this PR close?
Closes #7154.
Thanks @parkma99 for the initial work in #7161
Rationale for this change
With the changes in this PR, we can use use primary key information in the external tables also.
What changes are included in this PR?
Are these changes tested?
Yes new tests are added to show that, primary key information is used during planning. With these changes query below can run
even if column
bis not among the group by expressions, when it is known that columncis primary key. In this case we are sure that, for each uniquecvalue, there will be correspondingbvalue (bis functionally dependent on thec). Hence, above query can run successfully.Are there any user-facing changes?