select otto from (select 1 as otto) as t1; otto 1 select otto from (select 1 as otto) as t1; otto 1 select otto from (select 1 as otto) as t1; otto 1 select friedrich from (select 1 as otto) as t1; ERROR 42S22: Unknown column 'friedrich' in 'field list' select friedrich from (select 1 as otto) as t1; ERROR 42S22: Unknown column 'friedrich' in 'field list' select otto from (select 1 as otto) as t1; otto 1 select otto from (select 1 as otto) as t1; otto 1 select friedrich from (select 1 as otto) as t1; ERROR 42S22: Unknown column 'friedrich' in 'field list' select friedrich from (select 1 as otto) as t1; ERROR 42S22: Unknown column 'friedrich' in 'field list'