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trim function remove all leading or trailing characters (or both)(not inside) from a character string.
But in our case you must trim from 2006 and return as 26.
select ceil(avg(e.salary) - avg(replace(e.salary,0,''))) from employees e;
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The Blunder
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trim function remove all leading or trailing characters (or both)(not inside) from a character string. But in our case you must trim from 2006 and return as 26.
select ceil(avg(e.salary) - avg(replace(e.salary,0,''))) from employees e;