Github user maropu commented on the issue:
https://github.com/apache/spark/pull/19977
checked;
```
hive> create table t1(a string, b string);
hive> create view v1 as select a || b from t1;
hive> describe v1;
OK
_c0 string
hive> create table t2(a binary, b binary);
hive> create view v2 as select a || b from t2;
hive> describe v2;
_c0 binary
```
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