[BugFix] Fix csv converter and chunk column inconsistent in select into outfile (backport #48052) #48441
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Why I'm doing:
in some cases, the nullable property between
the column in the chunk
and_output_expr_ctxs
may not be consistent.for example: order by limit + left outer join
the result will be wrong if inconsistent.
What I'm doing:
use nullable converter, and process whether the column is nullable in the nullable converter.
Fixes #issue
What type of PR is this:
Does this PR entail a change in behavior?
If yes, please specify the type of change:
Checklist:
Bugfix cherry-pick branch check:
This is an automatic backport of pull request #48052 done by [Mergify](https://mergify.com). ## Why I'm doing:
in some cases, the nullable property between
the column in the chunk
and_output_expr_ctxs
may not be consistent.for example: order by limit + left outer join
the result will be wrong if inconsistent.
What I'm doing:
use nullable converter, and process whether the column is nullable in the nullable converter.
Fixes #issue
What type of PR is this:
Does this PR entail a change in behavior?
If yes, please specify the type of change:
Checklist: