GROUP CONCAT not working for some reason
There must be no space between function name and parenthesis. Change
GROUP_CONCAT (`shirt_sizes`.`size_name`) AS `sizes`
to
GROUP_CONCAT(`shirt_sizes`.`size_name`) AS `sizes`
There must be no space between function name and parenthesis. Change
GROUP_CONCAT (`shirt_sizes`.`size_name`) AS `sizes`
to
GROUP_CONCAT(`shirt_sizes`.`size_name`) AS `sizes`