如何在mysql中组合两列并将其作为一列？

Question

+-----+---------------+---------------+
| id  |    team_A     |    team_B     |
+-----+---------------+---------------+
|  1  |   Barcelona   |  Real Madrid  |
+-----+---------------+---------------+
|  2  |     Milan     |     Inter     |
+-----+---------------+---------------+

select * from table and combine as team_c

，结果应该像一列..

team_c as

barcelona
milam
real
inter

team_c 中的所有行应该不同.. 因为我需要在自动完成下拉菜单中显示两个？

Answer 1

尝试此查询：

select a.team_a as team_c from table a Union select b.team_b from table b

Answer 2

为什么要将这些数据存储到额外的表中。你可以使用像

这样的选择查询

select team_a as team_c from table Union select team_b from table

Answer 3

SELECT team_A, team_B , CONCAT_WS('', team_A, team_B) AS team_C, from table;

您可以使用CONCAT_WS组合它们。 希望它会有用！

Answer 4

SELECT CONCAT( team_A," ",team_B) AS team_c FROM table;

你可以试试输出会喜欢

巴塞罗那皇家马德里

米兰国际米兰

Answer 5

我认为this应该可以解决您的问题：

SELECT team_A AS team_C FROM table UNION SELECT team_B FROM table