stored procedures - MySQL concat multiple rows into a single row -

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i have query returns multiple rows such below in mysql: 

attribute_name  value ---------------------------------------- username          emailuser domain          mydomain.com

my required output follows: 

username       domain ----------------------------- emailuser     mydomain.com

current sql: 

    select pa2.attribute_name, upa2.value       product p  inner join product_attribute pa on p.product_id = pa.product_id        , pa.attribute_name = 'alias'  inner join user_product_attribute upa on pa.product_attribute_id upa.product_attribute_id  inner join user_product_attribute upa2 on upa.user_product_id = upa2.user_product_id  inner join product_attribute pa2 on pa2.product_attribute_id = upa2.product_attribute_id     , pa2.attribute_name     in (     'username', 'domain'     )  p.product_name = 'email' , upa.value = 'emailalias@domainalias'

i have been looking @ group_concat, think wrong path.. suggestions?

nothing wrong group_concat. following query slow small table, might not matter much.

select  group_concat(if(`attribute_name`='username', `value`,'')) `username`, group_concat(if(`attribute_name`='domain', `value`, '')) `domain`, (your old table or select query) group `attribute_name`

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