Weston Pace created ARROW-17556:
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Summary: [C++] Unbound scan projection expression leads to all
fields being loaded
Key: ARROW-17556
URL: https://issues.apache.org/jira/browse/ARROW-17556
Project: Apache Arrow
Issue Type: Bug
Components: C++
Reporter: Weston Pace
Assignee: Weston Pace
If a projection expression is unbound then we should bind it to the (augmented)
dataset schema and carry on. Instead it appears we are interpreting "unbound
expression" as "nothing set at all" and loading all fields.
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