Oleg Danilov created SPARK-14990:
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Summary: nvl, coalesce, array functions with parameter of type
"array"
Key: SPARK-14990
URL: https://issues.apache.org/jira/browse/SPARK-14990
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.6.1
Reporter: Oleg Danilov
Priority: Minor
Steps to reproduce:
1. create table tmp(col1 int, col2 array<int>)
2. insert values:
{code}
1, [1]
2, [2]
3, NULL
{code}
3. run query
select col1, coalesce(col2, array(1,2,3)) from tmp;
Expected result:
{code}
1, [1]
2, [2]
3, [1,2,3]
{code}
Current result:
{code}
Error: org.apache.spark.sql.AnalysisException: cannot resolve
'coalesce(col2,array(1,2,3))' due to data type mismatch: input to function
coalesce should all be the same type, but it's [array<int>, array<int>]; line 1
pos 38 (state=,code=0)
{code}
The fix seems to be pretty easy, will create a PR soon.
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