[fix](grouping) fix coredump of grouping function for outer join #18292
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Proposed changes
Issue Number: close #xxx
Problem summary
Result of functions
grouping
andgrouping_id
is always not nullable, but outer join will convert the result column to nullable when necessary, which will cause mismatch of column type and column object when executing unctionsgrouping
andgrouping_id
.Checklist(Required)
Further comments
If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...