1 SELECT DISTINCT 2 ( 3 CASE 4 WHEN t.fromType = '1' 5 THEN '關羽' 6 WHEN t.fromType = '2' 7 THEN ' 張飛' 8 WHEN t.fromType = '3' 9 THEN ' 趙雲' 10 WHEN t.fromType = '4' 11 THEN ' 馬超' 12 WHEN t.fromType = '5' 13 THEN ' 黃忠' 14 WHEN t.fromType = '6' 15 THEN ' 魏延' 16 ELSE ' 其他' 17 END 18 ) 注冊來源 19 FROM 20 tb_userInfo t
結果如下：
