carlvinhust2012

Results 4 comments of carlvinhust2012

[feature-wip](array-type) add the array_join function

> the function is a agg function. we should use group_concat to do the work. like `sum` `avg` `max` -->We consider the compatibility with the hdfs ecosystem and follow the...

[refactor](array-type) optimize the array_distinct and array_sort fun…

> There are still much duplicate code between function_array_sort.cpp and function_array_distinct.cpp. Is there any good idea to extract these code out? ok，I will re-check again.

[dependenct](fe) Replace jackson-mapper-asl with fastxml-jsckson

LGTM

[regression-test](Nereids)add binary arithmetic test for nereids

please add some detail description for these case in 'Proposed changes'.