Randgen:ERROR 1105 (HY000) at line 1: other error for mpp stream: DB::Exception: Method getDataAt is not supported for Nullable(Int32)

[fzhedu]

reproduce env:
mysql -h 172.16.5.85 -P 53324 -u root -D no_subquery200000

tiup cluster nightly of 2021-2-18

SELECT    table2 . `col_int_not_null_key` AS field1 , table2 . `col_varchar_binary_not_null_key` AS field2 FROM ( B AS table1 LEFT  JOIN C AS table2 ON (( table2 . `pk` = table1 . `pk` ) AND ( table2 . `pk` >= table1 . `col_int_key` ) ) )   GROUP BY field1, field2  ;

ERROR 1105 (HY000) at line 1: other error for mpp stream: DB::Exception: Method getDataAt is not supported for Nullable(Int32)

[fzhedu]

solved by pingcap/tidb#23172 pingcap/tidb#23237