NGA-TRAN opened a new issue #1234:
URL: https://github.com/apache/arrow-datafusion/issues/1234
**Describe the bug**
SELECT min/max(dictionary_string_column) will panic with the following
message:
`ArrowError(InvalidArgumentError("column types must match schema types,
expected Dictionary(Int32, Utf8) but found Utf8 at column index 0"))'`
**To Reproduce**
Add the below test inside
[query_on_string_dictionary](https://github.com/apache/arrow-datafusion/blob/dd9350607a9b4c8aaf6d7204fda8f1eab31a7ac2/datafusion/tests/sql.rs#L3935-L3993),
you will hit that bug.
// aggregation min
let sql = "SELECT MIN(d1) FROM test";
let actual = execute(&mut ctx, sql).await;
let expected = vec![vec!["one"]];
assert_eq!(expected, actual);
**Expected behavior**
Query runs and returns correct results
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