将三个mysql条目合并为一个条目

Question

I have 3 or 4 entries with the same name of a person an different other entries.

A    B    C          
---- ---- -----------
a    01    XXX 
a    02    XYZ
a    03    ABC

How can I merge them by selecting the a which is always the same in A to a structure like this:

A    B    C    D    E    F    G
---  ---  ---  ---  ---  ---  --- 
a    01   02   03   XXX  XYZ  ABC

Hope you can help me getting this.

Answer 1

Alternative Solution

If you have variable number of entries for different users then use GROUP_CONCAT FUNCTION. It is easier way (with some processing in php) than to make dynamic number of columns in sql.

SELECT A,GROUP_CONCAT(B) B, GROUP_CONCAT(C) C
FROM TABLE 
GROUP BY A;

The result will be like:- ABC
--- --- --- a 01,02,03 XXX,XYZ,ABC

You can further process it in php code to get column separated.