branch-4.0: [fix](nereids) bind file column placeholders for copy into select #64395#64469
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branch-4.0: [fix](nereids) bind file column placeholders for copy into select #64395#64469github-actions[bot] wants to merge 1 commit into
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…4395) ### What problem does this PR solve? PR #47194 introduced the Nereids COPY INTO command path. In this path, CopyIntoInfo analyzes column mappings and file filter expressions with a scope that only contains target table columns. For statements like: ``` COPY INTO customer FROM ( SELECT $1, $2, ... FROM @stage('xxx') ) ``` CopyFromDesc rewrites the select list into column mappings such as C_CUSTKEY = $1. $1 is a valid file column placeholder, but it was analyzed against the target-table-only scope and failed with unknown column '$1'. This patch adds synthetic file column slots ($1, $2, ...) into the COPY INTO expression analysis scope, infers their types from target column mappings when possible, and translates them back to legacy SlotRef(null, "$N") when building DataDescription / CopyFromParam.
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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run buildall |
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Cherry-picked from #64395