0
數組
["2016-06-02","2016-06-02"]
成爲
2016-06-02| 2016-06-02
數組
["2016-06-02","2016-06-02"]
成爲
2016-06-02| 2016-06-02
使用concat_ws(string delimiter, array<string>)
功能來連接陣列:
select concat_ws(',',collect_set(date)) from table;
如果日期字段不是字符串,則將其轉換爲字符串:concat_ws(',',collect_set(cast(date as string)))