fix: handle input array for extract_schema

Author: hatamiarash7

src/functions/extract_schema.cpp

@@ -9,13 +9,23 @@ namespace duckdb
     {
         // Extract the input from the arguments
         auto &input_vector = args.data[0];
-        auto input         = input_vector.GetValue (0).ToString ();
+        auto result_data   = FlatVector::GetData<string_t> (result);
 
-        // Extract the schema using the utility function
-        auto schema = netquack::ExtractSchema (input);
+        for (idx_t i = 0; i < args.size (); i++)
+        {
+            auto input = input_vector.GetValue (i).ToString ();
 
-        // Set the result
-        result.SetValue (0, Value (schema));
+            try
+            {
+                // Extract the schema using the utility function
+                auto schema    = netquack::ExtractSchema (input);
+                result_data[i] = StringVector::AddString (result, schema);
+            }
+            catch (const std::exception &e)
+            {
+                result_data[i] = "Error extracting schema: " + std::string (e.what ());
+            }
+        };
     }
 
     namespace netquack

test/sql/extract_schema.test

@@ -4,6 +4,9 @@
 
 require netquack
 
+statement ok
+CREATE TABLE uri_list AS SELECT * FROM read_csv('test/data/examples.csv', header=false, columns={'uri': 'VARCHAR'});
+
 # ---------------------------- HTTP/S ----------------------------
 
 query I
@@ -195,3 +198,16 @@ query I
 SELECT extract_schema('sms:a');
 ----
 sms
+
+query I
+SELECT extract_schema(uri) from uri_list;
+----
+(empty)
+(empty)
+(empty)
+(empty)
+(empty)
+(empty)
+https
+https
+http