Mysql put duplicate rows of a query in 1 row -

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i have table 

select `prodcutos`.`id`, `prodcutos`.`nombre`, `prodcutos`.`sku`, `prodcutos`.`marca`, `prodcutos`.`precio`, `prodcutos`.`imagen`, `prodcutos`.`descripcion`, `prodcutos`.`categoria1`, `prodcutos`.`categoria2`, `prodcutos`.`categoria3` `syscom`.`prodcutos`;

with query duplicate sku diferente categoria2, categoria3

'2948', 'licencia', 'xpetbl', 'milestone', '1,999', 'xpetbl.png', 'description', 'cctv', 'nvr grabación', 'licencias'  '3425', 'licencia', 'xpetbl', 'milestone', '1,999', 'xpetbl.png', 'description', 'cctv', 'software', 'grabación'

can create query me next result

'2948', 'licencia', 'xpetbl', 'milestone', '1,999', 'xpetbl.png', 'description', 'cctv', 'nvr grabación', 'licencias', 'cctv', 'software', 'grabación'

use group by 

select `prodcutos`.`id`, `prodcutos`.`nombre`, `prodcutos`.`sku`, `prodcutos`.`marca`, `prodcutos`.`precio`, `prodcutos`.`imagen`, `prodcutos`.`descripcion`, `prodcutos`.`categoria1`, `prodcutos`.`categoria2`, `prodcutos`.`categoria3` `syscom`.`prodcutos` group categoria1,categoria2,categaria3;

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