The GitHub Actions job "Required Checks" on 
texera.git/feat/standalone-relational-and-sampling has succeeded.
Run started by GitHub user kz930 (triggered by kz930).

Head commit for run:
b8e5dbfb0b5eb9ef0747f044cc2dc974ef68bd29 / kary zheng <[email protected]>
fix(operator): emit a join key once when both sides name it the same

The everyday join, the same column name on both inputs, carried a second key
column the operator never promises: `k`, `name`, `k#@1`, `score` where the 
engine
emits `k`, `name`, `score`.

Moving the right frame's columns aside before the merge, so a chained name
collision resolves, also moves the key aside when the two sides name it alike.
The drop was still decided by comparing the operator's own two names, which read
that case as one shared column and kept the copy. It now asks the name the 
rename
settled on, which is the only place that knows, and covers the three shapes
alike: the same name, a free name, and one that met a left column.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

Report URL: https://github.com/apache/texera/actions/runs/35430431051

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