SELECT
Name,
LOWER(Name) AS NameLowerCase
-- or lcase()
FROM country
| Name | NameLowerCase |
| Aruba | aruba |
| Afghanistan | afghanistan |
| Angola | angola |
| Anguilla | anguilla |
| Albania | albania |
| Andorra | andorra |
| Netherlands Antilles | netherlands antilles |
| United Arab Emirates | united arab emirates |
| Argentina | argentina |
| ... |
| LOWER() преобразует символы в нижний регистр |