2

I have a hive table like 

name            string                                      
address         string                                      
timezone        string                                      
one_key_value   array<struct<key:string,value:array<string>>                    
two_key_value   array<struct<key:string,value:array<string>>

and want to convert it to 

name            string                                      
address         string                                      
timezone        string                                      
one_key_value   map<string,array<string>>                       
two_key_value   map<string,array<string>>

There is explode(array) but doesn't really return the entire table in the format I want.

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3

Use lateral view with inline and map the resulting keys and values.

select name,address,timezone,map(k1,v1),map(k2,v2)
from tbl 
lateral view inline(one_key_value) t1 as k1,v1
lateral view inline(two_key_value) t1 as k2,v2
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5 Comments

Is there a way to not specify column names and just do * as there are more than 50 columns.
you can do it in select, but note you will get the original and transformed columns in that case.
How can I add a where statement to this, like where date='2018-10-10'
you can use it at the end..after lateral view
I just realized this is exploding the table and creating a new row for each value. I just need a single row for a key and all it's value. Any idea what changes I should make to this? Thanks :)

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