Hi,
Failed to execute query. Error: Incorrect syntax near the keyword 'VALUES'.
Now you added a new tiny issue in your query which is not related to the original issue.
In your new query you missing closure of the brackets before the word 'VALUES`
INSERT INTO Unit_Building (Unit_Building_Number, Public_Housing_Number, Number_of_bedrooms,Number_of_Kitchens,Number_of_livingrooms, Unit_area VALUES
Should be:
INSERT INTO Unit_Building (Unit_Building_Number, Public_Housing_Number, Number_of_bedrooms,Number_of_Kitchens,Number_of_livingrooms, Unit_area) VALUES