sql/pg_catalog: fix attname for dropped columns #120861
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Previously, the attname columns for dropped columns was padded used a %8d string format. This led to incorrect behavior as it meant a total of 8 '.' characters inclusive of the column ordinal as compared to the PG code base which always pads with 8 '.'. This affected migration tooling since it attempts to verify column names using the returned attname and led to mismatching column reports. This commit fixes the issue by explicitly setting the padding to 8 '.' to match the PG implementation. Fixes: cockroachdb#120855 Release note (bug fix): attname for dropped columns is now properly padded with 8 '.' to match PG.
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fqazi
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Mar 21, 2024
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Nice, find!
Reviewed 3 of 3 files at r1, all commit messages.
Reviewable status:complete! 1 of 0 LGTMs obtained (waiting on @Jeremyyang920)
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@rafiss I haven't tagged any backports since not sure how important this would be and can let you make the call on that. |
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I don't see a need to backport, unless you see it blocking some tool that needs this. I'll merge as-is. thanks for the fix! bors r+ |
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Previously, the attname columns for dropped columns was padded used a %8d string format. This led to incorrect behavior as it meant a total of 8 '.' characters inclusive of the column ordinal as compared to the PG code base which always pads with 8 '.'. This affected migration tooling since it attempts to verify column names using the returned attname and led to mismatching column reports.
This commit fixes the issue by explicitly setting the padding to 8 '.' to match the PG implementation.
Fixes: #120855
Release note (bug fix): attname for dropped columns is now properly padded with 8 '.' to match PG.