select convert(varchar,aa*10+1)+'---'+convert(varchar,aa*10+10),count(*) from(
select convert(integer,(score - 1) /10) aa from table_name ) cc
group by aa
order by aa
select convert(varchar,aa*10+1)+'---'+convert(varchar,aa*10+10),count(*) from (
select convert(integer,(score - 1)/10) aa from table_name ) cc
group by aa
order by aa
select convert(varchar,aa*10+1)+'---'+convert(varchar,aa*10+10),count(*) from(
select convert(integer,(score - 1) /10) aa from table_name ) cc
group by aa
order by aa