mysql错误：＃1052-from子句中的列“ id”不明确

Question

I need join twice for same table - age so I can order by one field of age, how come is it?

mysql error: #1052 - Column 'id' in from clause is ambiguous

select * from `students` `s` JOIN `age` `a` on `s`.`SN`=`a`.`SN` JOIN (SELECT `s`.`id` FROM `students` `s` JOIN `age` `a` on `s`.`SN`=`a`.`SN` WHERE 1 order by `a`.`age` asc limit 0,2) p using(id) order by `a`.`age` asc

Answer 1

The id is actually ambiguous , explicitly specify the table name, replace:

using(id)

with:

using(p.id)