CREATE TABLE catalog_structure (catalog_level_number DECIMAL, catalog_id DECIMAL, catalog_level_name TEXT)
CREATE TABLE catalogs (catalog_id DECIMAL, catalog_name TEXT, catalog_publisher TEXT, date_of_publication TIME, date_of_latest_revision TIME)
CREATE TABLE catalog_contents (catalog_entry_id DECIMAL, catalog_level_number DECIMAL, parent_entry_id DECIMAL, previous_entry_id DECIMAL, next_entry_id DECIMAL, catalog_entry_name TEXT, product_stock_number TEXT, price_in_dollars DECIMAL, price_in_euros DECIMAL, price_in_pounds DECIMAL, capacity TEXT, length TEXT, height TEXT, width TEXT)
CREATE TABLE catalog_contents_additional_attributes (catalog_entry_id DECIMAL, catalog_level_number DECIMAL, attribute_id DECIMAL, attribute_value TEXT)
CREATE TABLE attribute_definitions (attribute_id DECIMAL, attribute_name TEXT, attribute_data_type TEXT)

Give me the average and minimum price (in Euro) of the products.
SELECT AVG(price_in_euros), MIN(price_in_euros) FROM catalog_contents
SELECT AVG("price_in_euros"), MIN("price_in_euros") FROM "catalog_contents"