Github user maropu commented on the issue:
https://github.com/apache/spark/pull/20858
We should handle different (and compatible) typed arrays in this funs?
```
scala> sql("select concat_arrays(array(1L, 2L), array(3, 4))").show
org.apache.spark.sql.AnalysisException: cannot resolve
'concat_arrays(array(1L, 2L), array(3, 4))' due to data type mismatch: input to
function concat_arrays sh
ould all be the same type, but it's [array<bigint>, array<int>]; line 1 pos
7;
'Project [unresolvedalias(concat_arrays(array(1, 2), array(3, 4)), None)]
+- OneRowRelation
```
Also, could you add more tests for this case in `SQLQueryTestSuite`?
probably, we can add a new test file like `concat_arrays.sql` in
`typeCoercion.native`.
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