dynamic column name

Is it possible to build a SQL query in which the name of a column would be dynamic?

I need to create statistics about the content of tables.

Hereafter is an extract of the request. For each column of MYTABLE, I want to know how many rows have a NULL value.

select  co.TABNAME,  co.COLNAME, (select count(*) from SQLDBA.MYTABLE where co.COLNAME is NULL)
where co.TABNAME = 'MYTABLE'
order by co.COLNO


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I think you can do it 3 ways:
1/ Use the standard statistics
as they perfectly answer your how many nulls question

2/ Use a SQL query which returns a SQL query
  SELECT Concat('SELECT Count(*) FROM ',Concat(co.TABNAME,';'))
put the results in a batch and run it logging to a txt file (you'll found it easier than everything else)

3/ Use C and APIs
Perfect results guaranteed but it's a lot of work


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