将列的值连接到单独的列中

Question

我想将同一列的值连接到单独的列

假设有名为types和text的列

TYPES    TEXT 
A        This is a 
B        This is b
C        This is c

我希望输出为：

Con
This is c | This is a 
This is c | This is b

Answer 1

我认为与自己联系可以帮助你：

这是伪代码

select t.text || tb.text || tc.text
from t
inner join t tb using(types)
inner join t tc using(types)

因此，要连接A和C列，您可以尝试以下操作：

select t.text || tc.text
from t
full outer join t tc using(types)
where t.types = 'A' and tc.types = 'C'

Answer 2

select concat(t1.text ,' | ', t2.text ) from tablename t1
inner join tablename t2
on t1.types <> t2.types

SQL Fiddle