我正在尝试分组并获取多列的值列表。这是一个例子:
City | State | Income
-------+-------+--------
Salem | OH | 40000
Salem | OH | 45000
Mason | OH | 50000
Dayton | OH | 60000
Salem | MA | 40000
Mason | MA | 45000
Mason | MA | 50000
Dayton | MA | 70000
Salem | PA | 45000
Mason | PA | 50000
Dayton | PA | 60000
我正在寻找的结果是:
City | States | Income
-------+------------+--------------
Salem | OH,MA,PA | 40000,45000
Mason | OH,MA,PA | 50000,45000
Dayton | OH,MA,PA | 60000,70000
我设法做到了这一点:
City | States | Income
-------+------------+-------------------------
Salem | OH,MA,PA | 40000,40000,45000,45000
Mason | OH,MA,PA | 50000,50000,50000,45000
Dayton | OH,MA,PA | 60000,70000,60000
我如何从这里转到结果集?
City | States | Income
-------+------------+-------------------------
Salem | OH,MA,PA | 40000,45000,50000
Mason | OH,MA,PA | 50000,45000
Dayton | OH,MA,PA | 60000,70000