fix: handle ARROW_STREAM attachment in type generator#271
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jamesbroadhead wants to merge 1 commit intodatabricks:mainfrom
Open
fix: handle ARROW_STREAM attachment in type generator#271jamesbroadhead wants to merge 1 commit intodatabricks:mainfrom
jamesbroadhead wants to merge 1 commit intodatabricks:mainfrom
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When serverless warehouses return ARROW_STREAM format, the DESCRIBE QUERY
result comes as an inline base64 Arrow IPC attachment rather than data_array.
This caused convertToQueryType to generate empty types {}.
Add a fallback that decodes the Arrow IPC attachment schema to extract column
names and types when data_array is empty.
Co-authored-by: Isaac
Signed-off-by: James Broadhead <jamesbroadhead@gmail.com>
This was referenced Apr 15, 2026
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Summary
attachmentrather thandata_array. This causedconvertToQueryTypeto generate empty types{}.convertToQueryTypethat decodes the Arrow IPC attachment schema to extract column names and types whendata_arrayis empty.DatabricksStatementExecutionResponsetype with the optionalattachmentfield.Test plan
pnpm typecheckandpnpm testto confirm no build or test regressionsThis pull request was AI-assisted by Isaac.