xumingming opened a new pull request, #5813:
URL: https://github.com/apache/incubator-gluten/pull/5813
We insert a ProjectExec before GenerateExec to organize stack's params as
several arrays, these arrays then would be unnested using Unnest operator, for
query:
select stack(2, id, name, id1, name1)
The plan is:
Generate stack(2, id#122, name#123, id1#124, name1#125), false, [col0#137,
col1#138] +- Project [id#122, name#123, id1#124, name1#125, array(id#122,
id1#124) AS _pre_0#141, array(name#123,name1#125) AS _pre_1#142]
+- RewrittenNodeWall LocalTableScan [id#122, name#123, id1#124, name1#125]
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