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alamb
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Feb 26, 2026
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Thank you @ishanema03
I think this is a non trivial breaking API (as you can see by the number of API changes)
I understand the rationale for trying to make the API easier to use, but I think we need to balance that against the need to avoid breaking downstream users who are already using the APIs
Can someone help me understand if there is some particular bug this is solving?
I think some of the nuance on API change guidelines isn't well documented, so I'll make a PR to update it https://datafusion.apache.org/contributor-guide/api-health.html
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I wrote up some thoughts here |
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Which issue does this PR close?
From<String>forColumn#17375Rationale for this change
As mentioned in the issue, the From trait implementations for Column were misleading - they invoked Column::from_qualified_name() which parses and lower-cases field names, making conversions like field.name().into() behave unexpectedly. Requiring explicit calls to Column::from_qualified_name() makes the behavior clear and prevents misuse.
What changes are included in this PR?
Are these changes tested?
Yes, all existing tests have been updated and pass with the new API.
Are there any user-facing changes?
Yes, this is a breaking API change: