Update app.py

app.py

@@ -80,6 +80,7 @@ def create_prompt(user_query,table_metadata):
   Metadata-Based Validation: Always ensure the generated query matches the table name, columns, and data types provided in the metadata.
   User Intent: Accurately capture the user's requirements, such as filters, sorting, or aggregations, as expressed in natural language.
   SQL Syntax: Use standard SQL syntax that is compatible with most relational database systems.
+  Always validate that the required output columns are present in the schema or not else generate an error.
   Input Format:
   User Query: The user's natural language request.
   Table Metadata: The structure of the relevant table, including the table name, column names, and data types.