How to use passed parameters to a stored procedure in select query with the parameter name same as the field name in the select query

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C#

MySQL

Here is my stored procedure:

CREATE PROCEDURE DuplicationCheckAccountLedger (IN aname varchar(50), OUT errflag bit, OUT errFieldName varchar(10))
BEGIN
	declare cnt int default 0;
	select count(name) into cnt from account_ledger where name = aname;	
	if cnt = 0 
	then		
		set errflag = 0;
		set errFieldName = 'none';
	else 
		set errflag = 1;
		set errFieldName = 'name';
        end if;
end //

Instead of passing name field as 'aname', I would like to pass it as 'name' only. The query would like to read as:
select count(name) into cnt from account_ledger where name = name;

But, I know there is some problem with the above query that left hand side and right hand side will always be equal since select query will refer to table's field for both.

Is there any prefix to be used for such scenarios like something 'this' operator as we use in c#?

What I have tried:

I tried googling for this thing.. but I am not finding a good keyword to search for this query.