oracle主键查询语句答:select table_name,constraint_name,max(decode(position,1 ,column_name)),max(decode(position,2 ,column_name)),max(decode(position,3 ,column_name)),max(decode(position,4 ,column_name)),max(decode(position,5 ,column_name)),max(decode(position,6 ,column_name)),max(decode(position...