[英]how to combine two columns in mysql and make it as one column?
+-----+---------------+---------------+
| 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中的所有行应该是不同的...因为我需要在自动完成下拉菜单中显示两个?
试试这个查询:
select a.team_a as team_c from table a Union select b.team_b from table b
为什么要将这些数据存储到额外的表中。 您可以使用选择查询
select team_a as team_c from table Union select team_b from table
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!
SELECT CONCAT( team_A," ",team_B) AS team_c FROM table;
你可以试试这个输出就好
我认为这应该可以解决你的问题:
SELECT team_A AS team_C FROM table UNION SELECT team_B FROM table
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