我的case语句语法有什么问题？

Question

select 
    nameLast + ',' + nameFirst as 'Name' 
from 
    Players

    CASE 
       WHEN bats = 'L' THEN 'Left'
       WHEN bats = 'R' THEN 'Right'
       WHEN bats = 'B' THEN 'Both'
       ELSE 'Unknown' 
    END AS bats
FROM Players

为什么“ case”出现语法错误？我看过其他例子，这不是错误。我想念的是什么？

Answer 1

除非您没有case expression子句，否则您不应该在FROM之后加上WHERE。

SELECT
    nameLast + ',' + nameFirst as 'Name',
    CASE 
       WHEN bats = 'L' THEN 'Left'
       WHEN bats = 'R' THEN 'Right'
       WHEN bats = 'B' THEN 'Both'
       ELSE 'Unknown' 
    END AS bats  
FROM Players