keep the old API

Signed-off-by: Ruihang Xia <[email protected]>

datafusion/common/src/dfschema.rs

@@ -159,9 +159,22 @@ impl DFSchema {
     }
 
     /// Create a new `DFSchema` from a list of Arrow [Field]s
+    #[allow(deprecated)]
     pub fn from_unqualified_fields(
         fields: Fields,
         metadata: HashMap<String, String>,
+    ) -> Result<Self> {
+        Self::from_unqualifed_fields(fields, metadata)
+    }
+
+    /// Create a new `DFSchema` from a list of Arrow [Field]s
+    #[deprecated(
+        since = "40.0.0",
+        note = "Please use `from_unqualified_fields` instead (this one's name is a typo)"
+    )]
+    pub fn from_unqualifed_fields(
+        fields: Fields,
+        metadata: HashMap<String, String>,
     ) -> Result<Self> {
         let field_count = fields.len();
         let schema = Arc::new(Schema::new_with_metadata(fields, metadata));