Treat Null as Max

So if I had a table in my database wit开发者_Python百科h the values

1
2
3
4
NULL

And I executed the query

SELECT MAX(col1) FROM <table>

I'd get 4. Is there any way to change this so Null would be treated as the maximum as oppose to the minimum?

Thanks!

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SELECT MAX(ISNULL(col1, 2147483647)) FROM <table> 

[2147483647 = 2^31 - 1]

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Just as a variant, you can do this on Oracle.

SELECT *
  FROM ( SELECT col1 
           FROM <table>
          ORDER BY col1 DESC NULLS FIRST
       )
 WHERE rownum = 1

(OP hasn't specified any particular flavour of database)

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      SELECT MAX(ISNULL(col1, YouBiggestNumber)) FROM <table>