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Posted to github@arrow.apache.org by "fallintoplace (via GitHub)" <gi...@apache.org> on 2026/07/23 00:49:20 UTC
[PR] fix(arrow/array): support tables without columns [arrow-go]
fallintoplace opened a new pull request, #988:
URL: https://github.com/apache/arrow-go/pull/988
NewTableFromSlice no longer indexes the first column when given an empty schema. NewTableFromRecords now sums the logical record row counts so zero-column record batches keep their rows in the resulting table.\n\nTests:\n- go test ./arrow/array
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Re: [PR] fix(arrow/array): support zero-column tables [arrow-go]
Posted by "fallintoplace (via GitHub)" <gi...@apache.org>.
fallintoplace commented on PR #988:
URL: https://github.com/apache/arrow-go/pull/988#issuecomment-5060898407
The concrete case is projecting or removing all columns while retaining row cardinality. Arrow models the record batch length independently from its fields, so a zero-column batch can still represent N rows. Arrow Go already supports constructing, filtering, serializing, and reading those batches.
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Re: [PR] fix(arrow/array): support zero-column tables [arrow-go]
Posted by "zeroshade (via GitHub)" <gi...@apache.org>.
zeroshade commented on PR #988:
URL: https://github.com/apache/arrow-go/pull/988#issuecomment-5060400537
Under what scenario would we have zero-fields but a non-zero logical row count? That doesn't make sense to me
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Re: [PR] fix(arrow/array): support zero-column tables [arrow-go]
Posted by "zeroshade (via GitHub)" <gi...@apache.org>.
zeroshade merged PR #988:
URL: https://github.com/apache/arrow-go/pull/988
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