表1: -
ID NAME ADDRESS
1 TEST1 qwr
2 TEST2 sdf
我想根据ID列值
在select查询中获取列名EX: -
如果Id = 1,我想在select查询中选择“name”列 如果id = 2,我想在选择查询中使用“地址”列
select name from table (when id=1)
select address from table(when id=2)
我希望我清楚地传达了我的疑问。
答案 0 :(得分:2)
此查询将在单列和多行中返回结果:
SELECT CASE WHEN id = 1 THEN name WHEN id = 2 THEN address END AS result
FROM table;
答案 1 :(得分:0)
您可以使用子查询来获得两个结果:
select (select name from table where id = 1) as name,
(select address from table where id = 2) as address;