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Results tagged with hive
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user 75908
Questions about Hive and HiveQL.
1
vote
0
answers
2k
views
Hive query with RANK() in a WHERE clause
I want to do this, to get all the rows for a given a,b combo that have the highest value of c:
SELECT a, b, c
FROM x
WHERE RANK() OVER (PARTITION BY a,b ORDER BY c DESC) = 1
It fails, saying invali …
- 539
1
vote
0
answers
25
views
Defining external table on JSON with an @ sign in an element
I need to define a Hive external table onto a JSON file that has @ signs in its elements, e.g. …
- 539
0
votes
1
answer
6k
views
Testing a Hive array for IS NULL says not null
I have a table containing an array, and I want to check if it is empty or NULL. It appears that I cannot check the NULL directly! Can anyone shed light on why the NULL check isn't working?
create tabl …
- 539