Update app.py

app.py

@@ -93,7 +93,6 @@ def file_to_sql(file, filename):
         create_stmt = f"CREATE TABLE {table_name} ({', '.join(cols)});\n"
         
         # 5. Generate INSERT Statements
-        # Note: For very large files, bulk loading is better, but for "Sample" sizes, this is universally compatible
         inserts = []
         for _, row in df.iterrows():
             vals = []
@@ -101,7 +100,9 @@ def file_to_sql(file, filename):
                 if pd.isna(v): 
                     vals.append("NULL")
                 elif isinstance(v, str): 
-                    vals.append(f"'{str(v).replace("'", "''")}'") # Escape single quotes
+                    # FIX: Handle nested quotes for Python < 3.12 by extracting variable
+                    clean_v = str(v).replace("'", "''")
+                    vals.append(f"'{clean_v}'") 
                 else: 
                     vals.append(str(v))
             inserts.append(f"INSERT INTO {table_name} VALUES ({', '.join(vals)});")