fix: datatype_is_logically_equal for dictionaries

Author: dd-annarose

datafusion/common/src/dfschema.rs

@@ -700,8 +700,10 @@ impl DFSchema {
             (DataType::Dictionary(_, v1), DataType::Dictionary(_, v2)) => {
                 v1.as_ref() == v2.as_ref()
             }
-            (DataType::Dictionary(_, v1), othertype) => v1.as_ref() == othertype,
-            (othertype, DataType::Dictionary(_, v1)) => v1.as_ref() == othertype,
+            (DataType::Dictionary(_, v1), othertype)
+            | (othertype, DataType::Dictionary(_, v1)) => {
+                Self::datatype_is_logically_equal(v1.as_ref(), othertype)
+            }
             (DataType::List(f1), DataType::List(f2))
             | (DataType::LargeList(f1), DataType::LargeList(f2))
             | (DataType::FixedSizeList(f1, _), DataType::FixedSizeList(f2, _)) => {
@@ -1798,6 +1800,12 @@ mod tests {
             &DataType::Utf8,
             &DataType::Dictionary(Box::new(DataType::Int32), Box::new(DataType::Utf8))
         ));
+
+        // Dictionary is logically equal to logically equivalent value type
+        assert!(DFSchema::datatype_is_logically_equal(
+            &DataType::Utf8View,
+            &DataType::Dictionary(Box::new(DataType::Int32), Box::new(DataType::Utf8))
+        ));
     }
 
     #[test]