[Solved] GROUP CONCAT not work correct

Have you tried replacing   with a blank space?

PHP Code:

$this->db->select('cp.category_id AS category_id, GROUP_CONCAT(cd1.name SEPARATOR "  >  ") as name'); 


Does nothing still same result.

There's only one rule - please don't tell anyone to go and read the manual.  Sometimes the manual just SUCKS!