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with cte as(
select *, convert(float,replace((convert(varchar,salary)),'0','')) as new_column from employees
)
select cast(ceiling(avg(cast(salary as float))-avg(new_column)) as int) from cte;
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The Blunder
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with cte as( select *, convert(float,replace((convert(varchar,salary)),'0','')) as new_column from employees ) select cast(ceiling(avg(cast(salary as float))-avg(new_column)) as int) from cte;