SELECT T1.skill_id ,  T1.skill_description FROM Skills AS T1 JOIN Skills_Required_To_Fix AS T2 ON T1.skill_id  =  T2.skill_id GROUP BY T1.skill_id ORDER BY count(*) DESC LIMIT 1
Which skill is used in fixing the most number of faults? List the skill id and description.
SELECT T1.skill_id , T1.skill_description FROM Skills AS T1 JOIN Skills_Required_To_Fix AS T2 ON T1.skill_id = T2.skill_id GROUP BY T1.skill_id ORDER BY count ( * ) DESC LIMIT 1
select t1 . skill_id , t1 . skill_description from skills as t1 join skills_required_to_fix as t2 on t1 . skill_id = t2 . skill_id group by t1 . skill_id order by count ( * ) desc limit value
Which skill is used in fixing the most number of faults ? List the skill id and description .