feat: Support multiple external table locations

datafusion-cli/src/exec.rs

@@ -421,14 +421,18 @@ async fn create_plan(
     if let LogicalPlan::Ddl(DdlStatement::CreateExternalTable(cmd)) = &plan {
         // To support custom formats, treat error as None
         let format = config_file_type_from_str(&cmd.file_type);
-        register_object_store_and_config_extensions(
-            ctx,
-            &cmd.location,
-            &cmd.options,
-            format,
-            resolve_region,
-        )
-        .await?;
+        // A table may reference more than one location; register the object
+        // store for each of them.
+        for location in &cmd.locations {
+            register_object_store_and_config_extensions(
+                ctx,
+                location,
+                &cmd.options,
+                format.clone(),
+                resolve_region,
+            )
+            .await?;
+        }
     }
 
     if let LogicalPlan::Copy(copy_to) = &mut plan {
@@ -531,14 +535,16 @@ mod tests {
 
         if let LogicalPlan::Ddl(DdlStatement::CreateExternalTable(cmd)) = &plan {
             let format = config_file_type_from_str(&cmd.file_type);
-            register_object_store_and_config_extensions(
-                &ctx,
-                &cmd.location,
-                &cmd.options,
-                format,
-                false,
-            )
-            .await?;
+            for location in &cmd.locations {
+                register_object_store_and_config_extensions(
+                    &ctx,
+                    location,
+                    &cmd.options,
+                    format.clone(),
+                    false,
+                )
+                .await?;
+            }
         } else {
             return plan_err!("LogicalPlan is not a CreateExternalTable");
         }

datafusion/catalog/src/stream.rs

@@ -53,7 +53,15 @@ impl TableProviderFactory for StreamTableFactory {
         cmd: &CreateExternalTable,
     ) -> Result<Arc<dyn TableProvider>> {
         let schema: SchemaRef = Arc::clone(cmd.schema.inner());
-        let location = cmd.location.clone();
+        let location = match cmd.locations.as_slice() {
+            [single] => single.clone(),
+            _ => {
+                return config_err!(
+                    "Stream tables support exactly one location; \
+                     use a listing table to read multiple files"
+                );
+            }
+        };
         let encoding = cmd.file_type.parse()?;
         let header = if let Ok(opt) = cmd
             .options