Duda Procedimiento

[iislas]

La estructura de tu CASE, es incorrecta:

SELECT au_fname, au_lname,
CASE state
WHEN 'CA' THEN 'California'
WHEN 'KS' THEN 'Kansas'
WHEN 'TN' THEN 'Tennessee'
WHEN 'OR' THEN 'Oregon'
WHEN 'MI' THEN 'Michigan'
WHEN 'IN' THEN 'Indiana'
WHEN 'MD' THEN 'Maryland'
WHEN 'UT' THEN 'Utah'
END AS StateName
FROM pubs.dbo.authors
ORDER BY au_lname