我正在使用hive 1.1
hive> select country from releases limit 1;
OK
["us","ca","fr"]
现在,country是hive中的string类型。如何将其转换为Array [String]?
我尝试了下面的内容,但是它正在抛出错误
hive> select country, cast(country as Array[String]) from releases limit 1;
FAILED: ParseException line 1:48 cannot recognize input near 'Array' '[' 'String' in primitive type specification
有人可以帮我做类型转换吗?
答案 0 :(得分:0)
hive> with releases as (select '["us","ca","fr"]' as country)
> select split(regexp_extract(country,'^\\["(.*)\\"]$',1),'","')
> from releases
> ;
OK
_c0
["us","ca","fr"]