w3 schools choose database code example
Example 1: css in sql query
SELECT 'test1' AS [@class]
, ( SELECT 'test2' as [@class]
, (SELECT 'Name' FOR XML PATH(''))
FOR XML PATH('td'), type)
,(SELECT 'test3' as [@class]
, (SELECT 'Value' FOR XML PATH(''))
FOR XML PATH('td'), type)
FOR XML PATH('tr'), type
Example 2: how select from db
SELECT columname FROM tablename